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Smith LH, Park SA, Gjeltema J, Moore BA. Two is not necessarily better than one: A double lens in a pre-metamorphic adult axolotl (Ambystoma mexicanum). Vet Ophthalmol 2023; 26:176-179. [PMID: 36152337 PMCID: PMC10036263 DOI: 10.1111/vop.13027] [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: 04/14/2022] [Revised: 09/14/2022] [Accepted: 09/14/2022] [Indexed: 11/27/2022]
Abstract
An 8-year-old female pre-metamorphic axolotl (Ambystoma mexicanum) was examined for a suspected anterior lens luxation. Slit-lamp biomicroscopy revealed two lens-like structures in the anterior chamber of the right eye (OD), each with cataractous change. Ultrasound biomicroscopy and optical coherence tomography (OCT) were performed without sedation, and revealed small lenticular structures each with distinct nuclei and cortices. Although a distinct connection of the two lenticular structures could not be definitively ruled out, the structures appeared separate. Each of the lenticular structures was closely associated with its respective iris leaflet. This report demonstrates application of advanced imaging for diagnostic use in axolotl ophthalmology, showing that imaging of the lens can be performed without sedation, topical anesthetic, nor contact gel with high diagnostic quality. Although two distinct lenses were diagnosed with no historical evidence of trauma, the small sizes of each lenticular structure, with no detectable connection between them, are suggestive of a possible regenerative abnormality. This report opens discussion for the regenerative capabilities of the pre-metamorphic adult axolotl and possible implementations of their use in regenerative medicine research for the development of future therapies.
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Affiliation(s)
- LH Smith
- Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana, USA
| | - SA Park
- Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana, USA
| | - J Gjeltema
- Karen C. Drayer Wildlife Health Center and the Department of Medicine and Epidemiology of the University of California Davis School of Veterinary Medicine, Davis, CA, USA
| | - BA. Moore
- Small Animal Clinical Sciences, University of Florida, College of Veterinary Medicine, Gainesville, FL, USA
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2
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Kim KS, Park SA, Jung HD, Jung SM, Woo H, Ahn D, Park SS, Back S, Kim YT. Promoting Oxygen Evolution Reaction Induced by Synergetic Geometric and Electronic Effects of IrCo Thin-Film Electrocatalysts. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00856] [Citation(s) in RCA: 1] [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: 11/29/2022]
Affiliation(s)
- Kyu-Su Kim
- Department of Material Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Shin-Ae Park
- School of Mechanical Engineering, Pusan National University, Busan 46241, Republic of Korea
| | - Hyun Dong Jung
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 04107, Republic of Korea
| | - Sang-Mun Jung
- Department of Material Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Hyunje Woo
- School of Mechanical Engineering, Pusan National University, Busan 46241, Republic of Korea
| | - Docheon Ahn
- Beamline Research Division, Pohang Accelerator Laboratory (PAL), Pohang 37673, Republic of Korea
| | - Sarah S. Park
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Seoin Back
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 04107, Republic of Korea
| | - Yong-Tae Kim
- Department of Material Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
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Park SA, Shim K, Kim KS, Moon YH, Kim YT. Enhanced Activity for Oxygen Evolution Reaction of Nanoporous IrNi thin film Formed by Electrochemical Selective Etching Process. J ELECTROCHEM SCI TE 2019. [DOI: 10.33961/jecst.2019.00199] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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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Hwang SM, Na BJ, Jung Y, Lim HS, Seo JE, Park SA, Cho YS, Song EH, Seo JY, Kim SR, Lee GY, Kim SJ, Park YS, Seo H. Clinical and Laboratory Findings of Middle East Respiratory Syndrome Coronavirus Infection. Jpn J Infect Dis 2018; 72:160-167. [PMID: 30584196 DOI: 10.7883/yoken.jjid.2018.187] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
There is a paucity of data regarding the differentiating characteristics of patients with laboratory-confirmed and those negative for Middle East respiratory syndrome coronavirus (MERS-CoV) in South Korea. This hospital-based retrospective study compared MERS-CoV-positive and MERS-CoV-negative patients. A total of seven positive patients and 55 negative patients with a median age of 43 years (P = 0.845) were included. No statistical differences were observed with respect to their sex and the presence of comorbidities. At the time of admission, headache (28.6% vs. 3.6%; odds ratio [OR], 10.60; 95% confidence interval [CI], 1.22-92.27), myalgia (57.1% vs. 9.1%; OR, 13.33; 95% CI, 2.30-77.24), and diarrhea (57.1% vs. 14.5%; OR, 7.83; 95% CI, 1.47-41.79) were common among MERS-CoV-positive patients. MERS-CoV-positive patients were more likely to have a low platelet count (164 ± 76.57 vs. 240 ± 79.87) and eosinophil (0.27 ± 0.43 vs. 2.13 ± 2.01; P = 0.003). Chest radiography with diffuse bronchopneumonia was more frequent in MERS-CoV-positive patients than in negative patients (100% vs. 62.5%; P = 0.491). The symptoms of headache, myalgia, and diarrhea, as well as laboratory characteristics, including low platelet counts and eosinophil, and chest X-ray showing diffuse bronchopneumonia might enhance the ability to detect patients in South Korea infected with MERS-CoV.
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Affiliation(s)
- Se-Min Hwang
- Korea Centers for Disease Control and Prevention.,Department of Health Policy, Health & Welfare Bureau.,Department of Preventive Medicine, Korea University College of Medicine
| | - Baeg-Ju Na
- Seoul Metropolitan Government Civil Health Bueau
| | | | | | | | | | | | | | | | | | | | | | | | - Haesook Seo
- Department of Preventive Medicine, Korea University College of Medicine.,Department of Tuberculosis, Seobuk Hospital
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Kim YT, Lopes PP, Park SA, Lee AY, Lim J, Lee H, Back S, Jung Y, Danilovic N, Stamenkovic V, Erlebacher J, Snyder J, Markovic NM. Balancing activity, stability and conductivity of nanoporous core-shell iridium/iridium oxide oxygen evolution catalysts. Nat Commun 2017; 8:1449. [PMID: 29129907 PMCID: PMC5682288 DOI: 10.1038/s41467-017-01734-7] [Citation(s) in RCA: 114] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 10/11/2017] [Indexed: 11/24/2022] Open
Abstract
The selection of oxide materials for catalyzing the oxygen evolution reaction in acid-based electrolyzers must be guided by the proper balance between activity, stability and conductivity—a challenging mission of great importance for delivering affordable and environmentally friendly hydrogen. Here we report that the highly conductive nanoporous architecture of an iridium oxide shell on a metallic iridium core, formed through the fast dealloying of osmium from an Ir25Os75 alloy, exhibits an exceptional balance between oxygen evolution activity and stability as quantified by the activity-stability factor. On the basis of this metric, the nanoporous Ir/IrO2 morphology of dealloyed Ir25Os75 shows a factor of ~30 improvement in activity-stability factor relative to conventional iridium-based oxide materials, and an ~8 times improvement over dealloyed Ir25Os75 nanoparticles due to optimized stability and conductivity, respectively. We propose that the activity-stability factor is a key “metric” for determining the technological relevance of oxide-based anodic water electrolyzer catalysts. Production of affordable, clean hydrogen relies on efficient oxygen evolution, but improving catalytic performance for the reaction in acidic media is challenging. Here the authors show how tuning the nanoporous morphology of iridium/iridium oxide leads to an improvement in activity/stability, compared with conventional iridium-based oxides.
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Affiliation(s)
- Yong-Tae Kim
- Department of Energy System, Pusan National University, Pusan, 46241, Korea.
| | - Pietro Papa Lopes
- Materials Science Division, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Shin-Ae Park
- Department of Energy System, Pusan National University, Pusan, 46241, Korea
| | - A-Yeong Lee
- Department of Energy System, Pusan National University, Pusan, 46241, Korea
| | - Jinkyu Lim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Korea
| | - Hyunjoo Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Korea
| | - Seoin Back
- Graduate School of EEWS, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Korea
| | - Yousung Jung
- Graduate School of EEWS, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Korea
| | - Nemanja Danilovic
- Materials Science Division, Argonne National Laboratory, Lemont, IL, 60439, USA
| | | | - Jonah Erlebacher
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Joshua Snyder
- Department of Chemical and Biological Engineering, Drexel University, Philadelphia, PA, 19104, USA
| | - Nenad M Markovic
- Materials Science Division, Argonne National Laboratory, Lemont, IL, 60439, USA.
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6
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Woo H, Lee EK, Yun SW, Park SA, Park KH, Kim YT. Platinum Single Atoms on Carbon Nanotubes as Efficient Catalyst for Hydroalkoxylation. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11252] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Hyunje Woo
- Hybrid Materials Solution National Core Research Center (NCRC); Pusan National University; Busan 46241 Republic of Korea
| | - Eun-Kyung Lee
- Department of Energy System; Pusan National University; Busan 46241 Republic of Korea
| | - Su-Won Yun
- Department of Energy System; Pusan National University; Busan 46241 Republic of Korea
| | - Shin-Ae Park
- Department of Energy System; Pusan National University; Busan 46241 Republic of Korea
| | - Kang Hyun Park
- Department of Chemistry and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241 Korea
| | - Yong-Tae Kim
- Department of Energy System; Pusan National University; Busan 46241 Republic of Korea
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7
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Abstract
AIM To investigate the risk factors and predictors of falls according to the general characteristics, conscious state, physical condition and treatment of hospitalized patients with cancer. BACKGROUND Inpatients with cancer experience falls more frequently than those without cancer, and the degree of injuries is more severe among inpatients with cancer. A specific fall prevention strategy is needed for each patient. Prevention of falls in patients with cancer is very important for improving the quality of nursing care. METHODS This retrospective study included matched case-control patients. We evaluated patients between January 1, 2013, and December 31, 2014. A total of 356 patients (fall group, 178; non-fall group, 178) were included. For fall prediction, logistic regression was performed on the variables that were statistically significant in the univariate analysis. RESULTS The variables that were significant predictors of falls were the use of an assistive device, history of falls and fatigue. DISCUSSION The predictors of falls in patients with cancer include physical conditions and general characteristics. Fall prevention strategies in patients with cancer should be planned individually with multifaceted aspects, including physical symptom management. LIMITATIONS The study was conducted at a single cancer center in Korea; thus, our results cannot be generalized. Additionally, in Korea, it is common to have family members or private caregivers for patient care, and this might have influenced the results. CONCLUSION AND IMPLICATIONS FOR NURSING AND HEALTH POLICY The predictive factors for falls reflect the nature of the patient's environment, culture and disease. Falls have a negative effect on patient safety and can significantly influence quality of life. Policies for patient safety need more specialized and customized approaches.
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Affiliation(s)
- M D Jun
- Thyroid Cancer Center, National Cancer Center in Korea, Goyang, Korea
| | - K M Lee
- Team of Quality Management, National Cancer Center in Korea, Goyang, Korea
| | - S A Park
- Division of Nursing Science, University of Suwon, Hwaseong, Korea
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8
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Park SA, Park WC, Kwon YJ, Shim JY. Association between the Eating Family Meal and the Prevalence of Metabolic Syndrome Using Data from Korea National Health and Nutrition Examination Survey (2007-2012). Korean J Fam Med 2017; 38:130-134. [PMID: 28572888 PMCID: PMC5451446 DOI: 10.4082/kjfm.2017.38.3.130] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 05/16/2016] [Accepted: 08/02/2016] [Indexed: 12/13/2022] Open
Abstract
Background Several studies have shown that family meals promote a well-balanced and healthier diet and weight status. Metabolic syndrome is related to eating behavior. This study investigated the association between eating family meals and the prevalence of metabolic syndrome. Methods This cross-sectional study included 4,529 subjects who participated in the Korea National Health and Nutrition Examination Survey IV and V (2007–2012). A self-reported questionnaire was used to assess dietary status. Metabolic syndrome was defined according to the guidelines of the modified version of the National Cholesterol Education Program Adult Treatment Panel III. We compared the overall quality of dietary intake in family meal. Results Nutritional adequacy ratios for energy, protein, calcium, vitamin A, vitamin B1, vitamin B2, vitamin C, niacin, and potassium, and the mean adequacy ratio were significantly higher in the family meal group (P<0.05). The prevalence of metabolic syndrome was lower in the family meal group (P<0.05). However, we observed no significant association between eating family meals and the prevalence of metabolic syndrome. Conclusion This study demonstrated that eating family meals appeared to be associated with nutrient adequacy. However, we observed no significant differences in prevalence of metabolic syndrome between the 2 groups.
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Affiliation(s)
- Shin-Ae Park
- Department of Family Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Woo-Chul Park
- Department of Family Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Yu-Jin Kwon
- Department of Family Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Jae-Yong Shim
- Department of Family Medicine, Yonsei University College of Medicine, Seoul, Korea
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9
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Song H, Jeong TG, Yun SW, Lee EK, Park SA, Kim YT. An upper limit of Cr-doping level to Retain Zero-strain Characteristics of Li 4Ti 5O 12 Anode Material for Li-ion Batteries. Sci Rep 2017; 7:43335. [PMID: 28233818 PMCID: PMC5324106 DOI: 10.1038/srep43335] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [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: 07/10/2016] [Accepted: 01/25/2017] [Indexed: 11/09/2022] Open
Abstract
Since Li4Ti5O12 as a promising anode material in lithium-ion batteries (LIBs) has a poor rate performance due to low electronic conductivity, a doping of Li4Ti5O12 with heterogeneous atoms has been considered to overcome this problem. Herein, we report that there is an upper limit of doping level to maintain the zero strain characteristics of Li4Ti5O12 lattice during charge/discharge process. By using synchrotron studies, it was revealed that the Li+ diffusivity was maximized at a certain doping level for which the conductivity was markedly increased with maintaining the zero strain characteristics. However, with more doses of dopants over the upper limit, the lattice shrank and therefore the Li+ diffusivity decreased, although the electronic conductivity was further increased in comparison with the optimal doping level.
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Affiliation(s)
- Hannah Song
- Department of Energy Systems, Pusan National University, Busan 609-735, Republic of Korea
| | - Tae-Gyung Jeong
- Department of Energy Systems, Pusan National University, Busan 609-735, Republic of Korea
| | - Su-Won Yun
- Department of Energy Systems, Pusan National University, Busan 609-735, Republic of Korea
| | - Eun-Kyung Lee
- Department of Energy Systems, Pusan National University, Busan 609-735, Republic of Korea
| | - Shin-Ae Park
- Department of Energy Systems, Pusan National University, Busan 609-735, Republic of Korea
| | - Yong-Tae Kim
- Department of Energy Systems, Pusan National University, Busan 609-735, Republic of Korea
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10
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Yun SW, Park SA, Kim TJ, Kim JH, Pak GW, Kim YT. Hydrogen Oxidation-Selective Electrocatalysis by Fine Tuning of Pt Ensemble Sites to Enhance the Durability of Automotive Fuel Cells. ChemSusChem 2017; 10:489-493. [PMID: 28052537 DOI: 10.1002/cssc.201601274] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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: 09/13/2016] [Revised: 10/18/2016] [Indexed: 06/06/2023]
Abstract
A simple, inexpensive approach is proposed for enhancing the durability of automotive proton exchange membrane fuel cells by selective promotion of the hydrogen oxidation reaction (HOR) and suppression of the oxygen reduction reaction (ORR) at the anode in startup/shutdown events. Dodecanethiol forms a self-assembled monolayer (SAM) on the surface of Pt particles, thus decreasing the number of Pt ensemble sites. Interestingly, by controlling the dodecanethiol concentration during SAM formation, the number of ensemble sites can be precisely optimized such that it is sufficient for the HOR but insufficient for the ORR. Thus, a Pt surface with an SAM of dodecanethiol clearly effects HOR-selective electrocatalysis. Clear HOR selectivity is demonstrated in unit cell tests with the actual membrane electrode assembly, as well as in an electrochemical three-electrode setup with a thin-film rotating disk electrode configuration.
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Affiliation(s)
- Su-Won Yun
- School of Mechanical Engineering, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, Korea
| | - Shin-Ae Park
- School of Mechanical Engineering, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, Korea
| | - Tae-June Kim
- School of Mechanical Engineering, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, Korea
- Defense Agency for Technology and Quality, Department of Busan, 3rdTeam, 3370, Geoje-daero, Geoje-si, Gyeongsangna-do, 53302, Korea
| | - Jun-Hyuk Kim
- School of Mechanical Engineering, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, Korea
- National Core Research Center for Hybrid Materials Solution, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, Korea
| | - Gi-Woong Pak
- School of Mechanical Engineering, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, Korea
| | - Yong-Tae Kim
- School of Mechanical Engineering, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, Korea
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Abstract
Local anesthetics have been generally accepted as being safe. However, recent clinical trials and basic studies have provided strong evidence for the neurotoxicity of local anesthetics, especially through apoptosis. We hypothesized that local anesthetics cause neural complications through Schwann cell apoptosis. Among local anesthetics tested on the Schwann cell line, RT4-D6P2T, bupivacaine significantly induced cell death, measured by the methyl tetrazolium (MTT) assay, in a dose- (LD50 = 476 μM) and time-dependent manner. The bupivacaine-induced generation of reactive oxygen species (ROS), which was initiated within 5 hrs and preceded the activation of caspase-3 and poly ADP-ribose polymerase (PARP) degradation, was suggested to trigger apoptosis, exhibited by Hoechst 33258 nuclear staining and DNA fragmentation. Furthermore, concomitant block of ROS by anti-oxidants significantly inhibited bupivacaine-induced apoptosis. Among the local anesthetics for peripheral neural blocks, bupivacaine induced apoptosis in the Schwann cell line, which may be associated with ROS production.
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Affiliation(s)
- C J Park
- Department of Dental Anesthesiology and Dental Research Institute, Seoul National University College of Dentistry, 28 Yongon-dong Chongno-gu, Seoul 110-744, Korea
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12
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Park SA, Lee EK, Song H, Kim YT. Bifunctional enhancement of oxygen reduction reaction activity on Ag catalysts due to water activation on LaMnO3 supports in alkaline media. Sci Rep 2015; 5:13552. [PMID: 26310526 PMCID: PMC4550837 DOI: 10.1038/srep13552] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [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: 11/30/2014] [Accepted: 07/20/2015] [Indexed: 11/23/2022] Open
Abstract
Ag is considered to be one of the best candidates for oxygen reduction reaction electrocatalysts in alkaline media for application in various electrochemical energy devices. In this study, we demonstrate that water activation is a key factor in enhancing the ORR activity in alkaline media, unlike in acid environments. Ag supported on LaMnO3 having a high oxophilicity showed a markedly higher ORR activity than that on carbon with inert surfaces. Through various electrochemical tests, it was revealed that the origin of the enhanced ORR activity of Ag/LaMnO3 is the bifunctional effect mainly due to the water activation at the interface between Ag and LaMnO3. Furthermore, the ligand effect due to the charge transfer from Mn to Ag leads to the enhancement of both oxygen activation on Ag and water activation on Mn sites, and hence, an improvement in the ORR activity of Ag/LaMnO3. On the other hand, the strain effect based on the fine structure variation in the lattice was negligible. We therefore suggest that the employment of a co-catalyst or support with highly oxophilic nature and the maximization of the interface between catalyst and support should be considered in the design of electrocatalysts for the ORR in alkaline media.
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Affiliation(s)
- Shin-Ae Park
- Department of Energy System, Pusan National University, Busan 609-735, Republic of Korea
| | - Eun-Kyung Lee
- Department of Energy System, Pusan National University, Busan 609-735, Republic of Korea
| | - Hannah Song
- Department of Energy System, Pusan National University, Busan 609-735, Republic of Korea
| | - Yong-Tae Kim
- Department of Energy System, Pusan National University, Busan 609-735, Republic of Korea
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13
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Kim TJ, Park SA, Chang S, Chun HH, Kim YT. Effect of a Surface Area and a d-Band Oxidation State on the Activity and Stability of RuOxElectrocatalysts for Oxygen Evolution Reaction. B KOREAN CHEM SOC 2015. [DOI: 10.1002/bkcs.10364] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tae-Jun Kim
- School of Mechanical Engineering; Pusan National University; Busan 609-735 Republic of Korea
| | - Shin-Ae Park
- School of Mechanical Engineering; Pusan National University; Busan 609-735 Republic of Korea
| | - Seohyoung Chang
- Materials Science Division; Argonne National Laboratory; Argonne IL 60439 USA
| | - Ho-hwan Chun
- Global Core Research Center for Ships and Offshore Plants (GCRC-SOP); Pusan National University; Busan 609-735 Republic of Korea
| | - Yong-Tae Kim
- School of Mechanical Engineering; Pusan National University; Busan 609-735 Republic of Korea
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14
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Affiliation(s)
- Shin-Ae Park
- School
of Mechanical Engineering, Pusan National University, Busan 609-735, Republic of Korea
| | - Hankwon Lim
- Department
of Chemical Systematic Engineering, Catholic University of Daegu, Daegu 712-702, Republic of Korea
| | - Yong-Tae Kim
- School
of Mechanical Engineering, Pusan National University, Busan 609-735, Republic of Korea
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15
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Hwang KM, Park SA, Kim JY, Park CW, Rhee YS, Park ES. Formulation and in Vitro Evaluation of Self-microemulsifying Drug Delivery System Containing Fixed-Dose Combination of Atorvastatin and Ezetimibe. Chem Pharm Bull (Tokyo) 2015; 63:423-30. [DOI: 10.1248/cpb.c14-00814] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | | | | | | | - Yun-Seok Rhee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University
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16
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Affiliation(s)
- Shin-Ae Park
- School of Mechanical Engineering, Pusan National University, Busan 609-735, Korea
| | - Dae-Suk Kim
- School of Mechanical Engineering, Pusan National University, Busan 609-735, Korea
| | - Tae-Jun Kim
- School of Mechanical Engineering, Pusan National University, Busan 609-735, Korea
| | - Yong-Tae Kim
- School of Mechanical Engineering, Pusan National University, Busan 609-735, Korea
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17
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Kim SH, Bang SH, Park SA, Kang SY, Park KD, Oh IU, Yoo SH, Kim H, Kim CH, Baek SY. Character comparison of abdomen-derived and eyelid-derived mesenchymal stem cells. Cell Prolif 2013; 46:291-9. [PMID: 23692088 DOI: 10.1111/cpr.12027] [Citation(s) in RCA: 11] [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] [Received: 09/16/2012] [Accepted: 01/03/2013] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVES While most human adipose tissues, such as those located in the abdomen, hip and thigh, are of mesodermal origin, adipose tissues located in the face are of ectodermal origin. The present study has compared stem cell-related features of abdomen-derived adult stem cells (A-ASCs) with those of eyelid-derived adult stem cells (E-ASCs). MATERIALS AND METHODS Adipose tissue-derived cells were maintained in DMEM supplemented with 10% FBS. Before passage 6, cells were analysed using FACS, immunocytochemistry and quantitative real time PCR (qRT-PCR). To examine multi-differentiational potential, early passage ASCs were cultivated in each of a commercial Stempro(®) Differentiation kit. RESULTS Unlike fibroblast-like morphology of A-ASCs, E-ASCs had bipolar morphology. Both types of cell exhibited similar surface antigens, and neuronal cell-related genes and proteins. However, there were differences in mRNA expression levels of CD90 and CD146; neuron-specific enolase (NSE) and nuclear receptor-related protein 1 (Nurr1) were different between the two cell types. There was no difference in multi-differentiational potential between 3 E-ASCs lines, however, E-ASCs had higher expression levels of chondrocyte-related genes compared to A-ASCs. These cells underwent senescence and maintained normal karyotypes. CONCLUSIONS Although isolated from similar adipose tissues, both types of cells displayed many contrasting characteristics. Understanding defining phenotypes of such cells is useful for making suitable choices in differing clinical indications.
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Affiliation(s)
- S-H Kim
- National Institute of Food and Drug Safety Evaluation, Korea Food and Drug Administration, Cheongwon-gun, Chuncheongbuk-do 363-700, South Korea
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Park YW, Jeong MB, Kim TH, Ahn JS, Ahn JT, Park SA, Kim SE, Seo K. Effect of central corneal thickness on intraocular pressure with the rebound tonometer and the applanation tonometer in normal dogs. Vet Ophthalmol 2011; 14:169-73. [DOI: 10.1111/j.1463-5224.2010.00859.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [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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Park SA, Kim JH, Ahn JT, Kim WT, Park CG, Jeong MB, Yi SS, Yoon YS, Yoon JH, Kim HG, Seo KM. Effect of Mixed Extract of Panax Notoginseng, Rehmanniae Radix and Acanthopanacis Cortex (AIF) on Experimentally Induced Osteoarthritis. Biomol Ther (Seoul) 2010. [DOI: 10.4062/biomolther.2010.18.4.426] [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: 11/05/2022] Open
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Lee SH, Park SA, Ko SH, Yim HW, Ahn YB, Yoon KH, Cha BY, Son HY, Kwon HS. Insulin resistance and inflammation may have an additional role in the link between cystatin C and cardiovascular disease in type 2 diabetes mellitus patients. Metabolism 2010; 59:241-6. [PMID: 19765773 DOI: 10.1016/j.metabol.2009.07.019] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [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: 02/17/2009] [Revised: 06/16/2009] [Accepted: 07/20/2009] [Indexed: 12/26/2022]
Abstract
Recent studies suggest that serum cystatin C level is not only a sensitive marker for renal dysfunction but also a predictive marker for cardiovascular disease (CVD). However, the mechanism of this connection is not fully understood. We aimed to determine whether insulin resistance or various biomarkers of cardiovascular risk have a role in the link between cystatin C and CVD in type 2 diabetes mellitus patients. Anthropometric measurements and biochemical studies including inflammatory biomarkers were performed in 478 patients with type 2 diabetes mellitus. The degree of insulin resistance was assessed by homeostasis model assessment (HOMA-IR) and indicators of metabolic syndrome. Estimated glomerular filtration rate (eGFR) was derived from the Modification of Diet in Renal Disease study equation. After adjusting for age, sex, body mass index, and eGFR, the cystatin C level increased significantly in proportion to the number of metabolic syndrome components present (1.08 +/- 0.06, 1.19 +/- 0.04, 1.20 +/- 0.04, 1.23 +/- 0.04, and 1.37 +/- 0.06 mg/L; P < .0001); and HOMA-IR increased significantly in proportion to cystatin C quartiles (1.16 +/- 0.15, 1.40 +/- 0.13, 1.49 +/- 0.13, and 2.00 +/- 0.17; P < .0001) (means +/- SE). Albumin-creatinine ratio, fibrinogen, uric acid, homocysteine, high-sensitivity C-reactive protein, and lipoprotein(a) all showed significant correlations with cystatin C that were generally higher than those with eGFR. Cystatin C level was independently associated with HOMA-IR (beta = 0.0380, P = .0082), albumin-creatinine ratio (beta = 0.0004, P < .0001), uric acid (beta = 0.0666, P < .0001), and homocysteine (beta = 0.0087, P = .0004). In conclusion, cystatin C level was significantly associated with insulin resistance and biomarkers reflecting inflammation independent of renal function. These components may have a role in addition to that of eGFR in explaining the link between cystatin C and CVD in type 2 diabetes mellitus patients.
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Affiliation(s)
- Seung-Hwan Lee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, The Catholic University of Korea, St Vincent's Hospital, Suwon 442-723, Korea
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Park SA, Kim NR, Park YW, Jeong MB, Kim WT, Kim SE, Kim TH, Seo KM. Evaluation of the mydriatic effect of intracameral lidocaine hydrochloride injection in eyes of clinically normal dogs. Am J Vet Res 2009; 70:1521-5. [PMID: 19951124 DOI: 10.2460/ajvr.70.12.1521] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE-To evaluate the mydriatic effect of intracameral injection of preservative-free 1% and 2% lidocaine hydrochloride solutions and determine the onset and duration of mydriasis according to the concentration and volume of lidocaine administered in healthy dogs. ANIMALS-5 healthy adult Beagles weighing 7 to 10 kg, with no apparent ocular disease. PROCEDURES-A double-blind randomized 9-session crossover trial was designed. Both eyes were assigned to 9 treatments with a minimum 7-day washout period between treatments: 0.1, 0.2, and 0.3 mL of 2% lidocaine solution; 0.1, 0.2, and 0.3 mL of 1% lidocaine solution; and 0.1, 0.2, and 0.3 mL of balanced salt solution. Dogs were anesthetized, and the allocated treatment was injected intracamerally after aspiration of the same volume of aqueous humor from the anterior chamber of each eye. Two perpendicular pupil diameters were measured. Intraocular pressure, heart rate, respiratory rate, ECG readings, and end-tidal partial pressure of CO(2) were monitored. RESULTS-Intracameral injection of 1% or 2% lidocaine solutions in volumes of 0.1 to 0.3 mL induced a significant degree of mydriasis, and the effect was maintained for 74 to 142 minutes. Lidocaine injection had no significant effect on intraocular pressure, heart rate, respiratory rate, ECG readings, or end-tidal partial pressure of CO(2). CONCLUSIONS AND CLINICAL RELEVANCE-Intracameral lidocaine injection in healthy dogs induced mydriasis, the timing of which was affected by concentration and volume of lidocaine. This technique could serve as an alternative to topically administered mydriatics for intraocular surgery in dogs.
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Affiliation(s)
- Shin-Ae Park
- Department of Veterinary Surgery and Ophthalmology, College of Veterinary Medicine, and BK21 Program for Veterinary Science, Seoul National University, San 56-1, Sillim 9-dong, Gwanakgu, Seoul 151-742, Republic of Korea
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Lim YK, Kwak JW, Kim DW, Shin DH, Yoon MG, Ahn SH, Park SA, Lee DH, Lee SB, Park SY, Kim DY. SU-FF-J-71: A Prototype Fiducial Marker Composed of Gold Nanoparticles and Bone Cement for Proton Therapy of Prostate Cancers. Med Phys 2009. [DOI: 10.1118/1.3181363] [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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Baeck JH, Park SA, Lee WJ, Jeong IS, Jeong K, Cho MH, Kim YK, Min BG, Ko DH. Electronic and structural characteristics of Zr-incorporated Gd2O3 films on strained SiGe substrates. J Chem Phys 2009; 130:204510. [PMID: 19485460 DOI: 10.1063/1.3140203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Zr-incorporated Gd(2)O(3) films were grown on various substrates as a function of Zr content. The extent of interfacial reactions was found to be critically dependent on both the incorporated Zr content and the substrate type. Specifically, the silicide layer was suppressed and the Gd(2)O(3) phase was changed to ZrO(2) on a Si substrate with increasing Zr content. Crystalline Gd(2)Ge(2)O(7) was grown on a Ge substrate, as the result of interfacial reactions between Gd-oxide and the Ge substrate. However, interfacial reactions were not affected by the amount of Zr incorporated. On the SiGe/Si substrate, reactions between Gd-oxide and Si could be controlled effectively by the incorporation of Zr, while the extent of reactions with Ge was significantly enhanced as the Zr content increased. The formation of an interfacial layer between the film and the SiGe substrate resulted in a textured crystalline growth.
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Affiliation(s)
- J H Baeck
- Department of Physics, Yonsei University, Seoul 120-749, Korea
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Tadross MR, Park SA, Veeramani B, Yue DT. Robust approaches to quantitative ratiometric FRET imaging of CFP/YFP fluorophores under confocal microscopy. J Microsc 2009; 233:192-204. [PMID: 19196425 DOI: 10.1111/j.1365-2818.2008.03109.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ratiometric quantification of CFP/YFP FRET enables live-cell time-series detection of molecular interactions, without the need for acceptor photobleaching or specialized equipment for determining fluorescence lifetime. Although popular in widefield applications, its implementation on a confocal microscope, which would enable sub-cellular resolution, has met with limited success. Here, we characterize sources of optical variability (unique to the confocal context) that diminish the accuracy and reproducibility of ratiometric FRET determination and devise practical remedies. Remarkably, we find that the most popular configuration, which pairs an oil objective with a small pinhole aperture, results in intractable variability that could not be adequately corrected through any calibration procedure. By quantitatively comparing several imaging configurations and calibration procedures, we find that significant improvements can be achieved by combining a water objective and increased pinhole aperture with a uniform-dye calibration procedure. The combination of these methods permitted remarkably consistent quantification of sub-cellular FRET in live cells. Notably, this methodology can be readily implemented on a standard confocal instrument, and the dye calibration procedure yields a time savings over traditional live-cell calibration methods. In all, identification of key technical challenges and practical compensating solutions promise robust sub-cellular ratiometric FRET imaging under confocal microscopy.
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Affiliation(s)
- M R Tadross
- Calcium Signals Laboratory, Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Ross Building, Room 713, 720 Rutland Avenue, Baltimore, MD 21205, USA
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Park SA, Ko SH, Lee SH, Cho JH, Moon SD, Jang SA, Son HS, Song KH, Cha BY, Son HY, Ahn YB. Incidence of Diabetic Foot and Associated Risk Factors in Type 2 Diabetic Patients: A Five-year Observational Study. Korean Diabetes J 2009. [DOI: 10.4093/kdj.2009.33.4.315] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Shin-Ae Park
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seung-Hyun Ko
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seung-Hwan Lee
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jae-Hyoung Cho
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sung-Dae Moon
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sang-A Jang
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hyun-Shik Son
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Ki-Ho Song
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Bong-Yun Cha
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Ho-Young Son
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yu-Bae Ahn
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
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Park SA, Ko SH, Lee SH, Cho JH, Moon SD, Jang SA, Song KH, Son HS, Yoon KH, Cha BY, Son HY, Ahn YB. Average Daily Risk Range-Index of Glycemic Variability-Related Factor in Type 2 Diabetic Inpatients. Korean Diabetes J 2009. [DOI: 10.4093/kdj.2009.33.1.31] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Shin-Ae Park
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seung-Hyun Ko
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seung-Hwan Lee
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jae-Hyung Cho
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sung-Dae Moon
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sang-A Jang
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Ki-Ho Song
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hyun-Shik Son
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Kun-Ho Yoon
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Bong-Yun Cha
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Ho-Young Son
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yu-Bae Ahn
- Division of Endocrinology & Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
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Ko SH, Song KH, Park SA, Kim SR, Cha BY, Son HY, Moon KW, Yoo KD, Park YM, Cho JH, Yoon KH, Ahn YB. Cardiovascular autonomic dysfunction predicts acute ischaemic stroke in patients with Type 2 diabetes mellitus: a 7-year follow-up study. Diabet Med 2008; 25:1171-7. [PMID: 19046195 DOI: 10.1111/j.1464-5491.2008.02567.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [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] [Indexed: 12/25/2022]
Abstract
AIMS We investigated whether cardiovascular autonomic neuropathy (CAN) is associated with acute ischaemic stroke in patients with Type 2 diabetes. METHODS From 1999 to 2000, cardiovascular autonomic function tests were conducted in patients with Type 2 diabetes (n = 1458). Patients were followed up between 2006 and 2007. Standard tests for CAN measured heart rate variability parameters [expiration-to-inspiration (E/I) ratio, responses to the Valsalva manoeuvre and standing]. Using the American Diabetes Association criteria, the CAN scores were determined from the results of each test as follows: 0 = normal, 1 = abnormal (total maximum score 3). We assessed the development of acute ischaemic stroke events. RESULTS The prevalence of CAN at baseline was 55.7% (E/I 17.1%, Valsalva 39.4%, posture 27.3%) (n = 1126). During follow-up, 131 patients (11.6%) developed acute ischaemic stroke. The vascular events were more frequent in older patients (P < 0.001) and in those with diabetes of longer duration (P = 0.022), hypertension (P < 0.001) or diabetic retinopathy (P = 0.03) than in patients without vascular events. Patients with ischaemic stroke had higher creatinine levels (P = 0.045) and higher urine albumin excretion (P = 0.025) than those of patients without stroke. Cox proportional hazard regression analysis revealed that the CAN score was associated with the development of acute ischaemic stroke (total score 0 vs. 3, adjusted hazard ratio 2.7, 95% CI 1.3-5.5, P = 0.006). CONCLUSION Cardiovascular autonomic dysfunction was significantly associated with the development of ischaemic stroke in patients with Type 2 diabetes.
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Affiliation(s)
- S H Ko
- Division of Endocrinology and Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
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Kim HA, Jeong MB, Yi NY, Park SA, Kim WT, Kim SE, Chae JM, Seo KM. Effects of stimulus intensity for electroretinogram in conscious Miniature Schnauzers. J Vet Med Sci 2008; 70:857-9. [PMID: 18772566 DOI: 10.1292/jvms.70.857] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The aim of this study was to determine the most effective light intensity for flash electroretinogram (ERG) examination in conscious dogs using ERG equipment with a contact lens electrode with a built-in LED light source. ERG was performed on the bilateral eyes of ten clinically healthy Miniature Schnauzers at 6 different intensities (0.025, 0.079, 0.25, 0.79, 2.5 and 7.9 cd.s/m2) after dark adaptation for 20 min. With the increase in stimulus intensity, the most significant increase in a and b-wave amplitudes were observed at 2.5 cd.s/m2 (p<0.05). As the intensity of light was increased, the implicit times of both waves significantly decreased. Therefore, the most effective intensity of stimulus was 2.5 cd.s/m2 in the conscious Miniature Schnauzers. This suggests that this procedure would be applicable for evaluation of retinal function in conscious dogs, especially in high-risk patients.
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Affiliation(s)
- Hyun-Ah Kim
- Department of Veterinary Surgery/Ophthalmology, College of Veterinary Medicine, Seoul National University, Gwanak-gu, Seoul, Republic of Korea
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Ko SH, Park SA, Cho JH, Song KH, Yoon KH, Cha BY, Son HY, Yoo KD, Moon KW, Park YM, Ahn YB. Progression of cardiovascular autonomic dysfunction in patients with type 2 diabetes: a 7-year follow-up study. Diabetes Care 2008; 31:1832-6. [PMID: 18509202 PMCID: PMC2518354 DOI: 10.2337/dc08-0682] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVE We investigated whether cardiovascular autonomic dysfunction was associated with glycemic control status over time in patients with type 2 diabetes. RESEARCH DESIGN AND METHODS From 1999 to 2000, cardiovascular autonomic nerve function testing (AFT) was performed on patients with type 2 diabetes (n = 1,021) and was followed-up in 2006 and February 2008. Tests for cardiovascular autonomic functions measured heart rate variability parameters (expiration-to-inspiration [E/I] ratio, responses to the Valsalva maneuver, and standing). AFT scores were determined from the results of the each test as follows: 0 for normal and 1 for abnormal. We began with those who had a score of 0 and assessed the changes in total score along with biannual A1C levels. RESULTS At follow-up, the development of cardiovascular autonomic dysfunction was 34.5% (E/I ratio 21.9%, Valsalva maneuver 77.8%, and posture 58.9%; n = 783). The development of cardiovascular autonomic dysfunction was higher in older patients (P < 0.001); in those with longer duration of diabetes (P < 0.001); of hypertension (P = 0.005), and of diabetic retinopathy (P < 0.001); and in those who had higher levels of microalbuminuria (P = 0.002). Logistic regression analysis revealed that the development of cardiovascular autonomic dysfunction was strongly associated with the mean A1C level during the follow-up period (mean A1C >9.0% vs. <or=7.0%, odds ratio 2.984, 95% CI 1.177-7.561; P = 0.021). CONCLUSIONS The development of cardiovascular autonomic dysfunction was independently associated with microvascular complications and glycemic control status during this 7.5-year follow-up in patients with type 2 diabetes.
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Affiliation(s)
- Seung-Hyun Ko
- Division of Endocrinology and Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
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Lee SH, Lee KW, Kim ES, Park YR, Kim HS, Park SA, Kang MJ, Ahn YB, Yoon KH, Cha BY, Son HY, Kwon HS. Cystatin C is a Valuable Marker for Predicting Future Cardiovascular Diseases in Type 2 Diabetic Patients. Korean Diabetes J 2008. [DOI: 10.4093/kdj.2008.32.6.488] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Seung-Hwan Lee
- Department of Internal Medicine, The Catholic University of Korea, Korea
| | - Kang-Woo Lee
- Department of Internal Medicine, The Catholic University of Korea, Korea
| | - Eun Sook Kim
- Department of Internal Medicine, The Catholic University of Korea, Korea
| | - Ye Ree Park
- Department of Internal Medicine, The Catholic University of Korea, Korea
| | - Hun-Sung Kim
- Department of Internal Medicine, The Catholic University of Korea, Korea
| | - Shin-Ae Park
- Department of Internal Medicine, The Catholic University of Korea, Korea
| | - Mi Ja Kang
- Department of Internal Medicine, The Catholic University of Korea, Korea
| | - Yu-Bai Ahn
- Department of Internal Medicine, The Catholic University of Korea, Korea
| | - Kun-Ho Yoon
- Department of Internal Medicine, The Catholic University of Korea, Korea
| | - Bong-Yun Cha
- Department of Internal Medicine, The Catholic University of Korea, Korea
| | - Ho-Young Son
- Department of Internal Medicine, The Catholic University of Korea, Korea
| | - Hyuk-Sang Kwon
- Department of Internal Medicine, The Catholic University of Korea, Korea
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Jeong MB, Kim YJ, Yi NY, Park SA, Kim WT, Kim SE, Chae JM, Kim JT, Lee H, Seo KM. Comparison of the rebound tonometer (TonoVet) with the applanation tonometer (TonoPen XL) in normal Eurasian Eagle owls (Bubo bubo). Vet Ophthalmol 2007; 10:376-9. [PMID: 17970999 DOI: 10.1111/j.1463-5224.2007.00573.x] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To examine the feasibility and accuracy of a handheld rebound tonometer, TonoVet, and to compare the intraocular pressure (IOP) readings of the TonoVet with those of an applanation tonometer, TonoPen XL, in normal Eurasian Eagle owls. ANIMALS STUDIED Ten clinically normal Eurasian Eagle owls (20 eyes). PROCEDURES Complete ocular examinations, using slit-lamp biomicroscopy and indirect ophthalmoscopy, were conducted on each raptor. The IOP was measured bilaterally using a rebound tonometer followed by a topical anesthetic agent after 1 min. The TonoPen XL tonometer was applied in both eyes 30 s following topical anesthesia. RESULTS The mean +/- SD IOP obtained by rebound tonometer was 10.45 +/- 1.64 mmHg (range 7-14 mmHg), and by applanation tonometer was 9.35 +/- 1.81 mmHg (range 6-12 mmHg). There was a significant difference (P = 0.001) in the IOP obtained from both tonometers. The linear regression equation describing the relationship between both devices was y = 0.669x + 4.194 (x = TonoPen XL and y = TonoVet). The determination coefficient (r(2)) was r(2) = 0.550. CONCLUSIONS The results suggest that readings from the rebound tonometer significantly overestimated those from the applanation tonometer and that the rebound tonometer was tolerated well because of the rapid and minimal stress-inducing method of tonometry in the Eurasian Eagle owls, even without topical anesthesia. Further studies comparing TonoVet with manometric measurements may be necessary to employ rebound tonometer for routine clinical use in Eurasian Eagle owls.
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Affiliation(s)
- Man-Bok Jeong
- Department of Veterinary Surgery and Ophthalmology, College of Veterinary Medicine, Seoul National University, San 56-1, Sillim 9-dong, Gwanak-gu, Seoul 151-742, Korea
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Yu HA, Jeong MB, Park SA, Kim WT, Kim SE, Chae JM, Yi NY, Seo KM. The determination of dark adaptation time using electroretinography in conscious miniature Schnauzer dogs. J Vet Sci 2007; 8:409-14. [PMID: 17993756 PMCID: PMC2868158 DOI: 10.4142/jvs.2007.8.4.409] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The optimal dark adaptation time of electroretinograms (ERG's) performed on conscious dogs were determined using a commercially available ERG unit with a contact lens electrode and a built-in light source (LED-electrode). The ERG recordings were performed on nine healthy Miniature Schnauzer dogs. The bilateral ERG's at seven different dark adaptation times at an intensity of 2.5 cd·s/m2 was performed. Signal averaging (4 flashes of light stimuli) was adopted to reduce electrophysiologic noise. As the dark adaptation time increased, a significant increase in the mean a-wave amplitudes was observed in comparison to base-line levels up to 10 min (p < 0.05). Thereafter, no significant differences in amplitude occured over the dark adaptation time. Moreover, at this time the mean amplitude was 60.30 ± 18.47 µV. However, no significant changes were observed for the implicit times of the a-wave. The implicit times and amplitude of the b-wave increased significantly up to 20 min of dark adaptation (p < 0.05). Beyond this time, the mean b-wave amplitudes was 132.92 ± 17.79 µV. The results of the present study demonstrate that, the optimal dark adaptation time when performing ERG's, should be at least 20 min in conscious Miniature Schnauzer dogs.
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Affiliation(s)
- Hyung-Ah Yu
- Department of Veterinary Surgery and Ophthalmology, College of Veterinary Medicine and BK21 Program for Veterinary Science, Seoul National University, Seoul 151-742, Korea
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Abstract
Thyroid related autoantibodies have been related to the development of encephalopathy, known as Hashimoto's encephalopathy. However, their relation with the encephalopathy occurring in patients with Graves' disease has not been well established. The case is reported of a 51 year old woman presenting with subacute progressive dementia with evidence of hyperthyroidism. She had Graves' disease associated with high titres of thyroid related autoantibodies. Her encephalopathy was not improved by antithyroid drugs, but promptly responded to corticosteroid treatment, and stabilised with a gradual reduction of thyroid related autoantibody titres. Brain positron emission tomography initially showed a diffuse and multifocal cerebral hypometabolism with subsequent normalisation on her clinical recovery, which was consistent with the acute and reversible cerebral inflammation probably mediated by autoimmune mechanisms.
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Affiliation(s)
- S W Seo
- Department of Neurology, Yonsei University College of Medicine, Shinchon-dong 134, Seodaemoon-gu, Seoul 120-752, Korea
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Park SA, Lim SR, Kim GS, Heo K, Park SC, Chang JW, Chung SS, Choi JU, Kim TS, Lee BI. Ictal electrocorticographic findings related with surgical outcomes in nonlesional neocortical epilepsy. Epilepsy Res 2002; 48:199-206. [PMID: 11904238 DOI: 10.1016/s0920-1211(02)00006-2] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
PURPOSE To characterize ictal electrocorticographic features related to surgical outcomes in nonlesional neocortical epilepsy (NE). METHODS We analyzed 187 ictal electrocorticograms (ECoG) obtained from 18 patients who had undergone presurgical evaluation and subsequent neocortical resections (frontal: seven, parietal: one, occipital: four, multilobar: six). None of them had any MRI-detectable lesions. Various ECoG data sets recorded from eight patients who achieved a favorable surgical outcome (either seizure free or more than 90% reduction of seizure frequencies) were compared with that from ten patients with unfavorable outcome (less than 90% reduction of seizure frequencies) (follow up duration: 47+/-11 months). RESULTS Reproducible ictal onset zone (IOZ) in recurrent seizures (P=0.013) and persistent ictal discharges in IOZ from the onset to the end of seizure (P=0.004) were found more frequently in the patients with good outcome. Ictal onset patterns consisting of low voltage fast or high amplitude beta spikes predicted a good surgical outcome while rhythmic sinusoidal activity or rhythmic spike/sharp waves of slow frequency were predictive of poor outcome (P=0.01). The ictal onset rhythm consisting of gamma or beta frequencies was more prevalent in the favorable group (P=0.015). CONCLUSIONS The presence of stable ictal circuit suggested by the consistent earliest activation of specific electrodes in the repetitive seizures (reproducible IOZ) and the active participation of IOZ throughout the attack were valuable prognostic factors in addition to the morphology and frequency of ictal onset rhythm.
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Affiliation(s)
- S A Park
- Department of Neurology, Yonsei University College of Medicine, Severance Hospital, CPO Box 8044, Seoul, South Korea
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Park SA, Park HJ, Lee BI, Ahn YH, Kim SU, Choi KS. Bcl-2 blocks cisplatin-induced apoptosis by suppression of ERK-mediated p53 accumulation in B104 cells. Brain Res Mol Brain Res 2001; 93:18-26. [PMID: 11532334 DOI: 10.1016/s0169-328x(01)00176-0] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Bcl-2 has been reported to inhibit neurotoxicity induced by cisplatin. However, neither the mechanism of cisplatin-induced neurotoxicity nor the mechanism by which Bcl-2 confers neuroprotection is clear. In this study, the signaling pathways involved in cisplatin-induced neurotoxicity were examined using a rat neuroblastoma cell line, B104. Treatment of B104 cells with cisplatin induced apoptosis, accompanying the accumulation of p53 and Bax protein. Interestingly, extracellular signal-regulated kinase 1/2 (ERK1/2) activities of MAP kinases were markedly enhanced prior to cisplatin-induced accumulation of p53 and Bax. Inhibition of ERK1/2 activities using PD98059, a selective MEK inhibitor, blocked the apoptotic cell death preventing cisplatin-induced accumulation of p53 and Bax. These results suggest that ERK mediates cisplatin-induced p53 activation to trigger apoptosis in B104 cells. Overexpression of Bcl-2 in B104 cells resulted in the complete resistance to cisplatin-induced apoptosis blocking ERK activation and the subsequent signaling pathway of p53. Our study clearly demonstrates that the action site of Bcl-2 localizes upstream of ERK in cisplatin-induced apoptotic signaling pathway.
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Affiliation(s)
- S A Park
- Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea
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Abstract
PURPOSE To describe the possible mechanism of ictal automatisms with preserved responsiveness (APRs) in a patient with left mesial temporal lobe epilepsy, which had not been reported previously. METHODS Ictal EEGs recorded from bilateral foramen ovale electrodes with scalp-sphenoidal electrodes were analyzed in respect to the ictal semiology. RESULTS The patient had a right hemispheric language dominance in the dextral. Electroclinical analysis revealed that the onset of oroalimentary automatisms coincided with the involvement of the left mesial and lateral temporal structures by spreading ictal discharges. The ictal discharge spreading was limited to the ipsilateral hemisphere throughout the seizure, which explained the intact consciousness and preserved responsiveness of the patient. CONCLUSIONS This case suggests that APRs take place in seizures originating from the nondominant temporal lobe, during which ipsilateral mesial and lateral temporal structures are diffusely involved without spreading to the contralateral side.
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Affiliation(s)
- S A Park
- Departments of Neurology, Yonsei University College of Medicine, Seoul, Korea
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Shin ZI, Yu R, Park SA, Chung DK, Ahn CW, Nam HS, Kim KS, Lee HJ. His-His-Leu, an angiotensin I converting enzyme inhibitory peptide derived from Korean soybean paste, exerts antihypertensive activity in vivo. J Agric Food Chem 2001; 49:3004-9. [PMID: 11410001 DOI: 10.1021/jf001135r] [Citation(s) in RCA: 113] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
It has been reported that soybean peptide fractions isolated from Korean fermented soybean paste exert angiotensin I converting enzyme (ACE) inhibitory activity in vitro. In this study, further purification and identification of the most active fraction inhibiting ACE activity were performed, and its antihypertensive activity in vivo was confirmed. Subsequently, a novel ACE inhibitory peptide was isolated by preparative HPLC. The amino acid sequence of the isolated peptide was identified as His-His-Leu (HHL) by Edman degradation. The IC(50) value of the HHL for ACE activity was 2.2 microg/mL in vitro. Moreover, the synthetic tripeptide HHL (spHHL) resulted in a significant decrease of ACE activity in the aorta and led to lowered systolic blood pressure (SBP) in spontaneously hypertensive (SH) rats compared to control. Triple injections of spHHL, 5 mg/kg of body weight/injection resulted in a significant decrease of SBP by 61 mmHg (p < 0.01) after the third injection. These results demonstrated that the ACE inhibitory peptide HHL derived from Korean fermented soybean paste exerted antihypertensive activity in vivo.
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Affiliation(s)
- Z I Shin
- Research and Development Center, Nongshim Company, Ltd., Gunpo 435-030, South Korea
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Affiliation(s)
- S T Lim
- Department of Nuclear Medicine, Chonbuk National University Medical School, Chonju, Korea
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Lim ST, Sohn MH, Park SA. Curious radioactivity in the lower abdomen on bone scintigraphy: displacement of the urinary bladder by an incidentally diagnosed uterine myoma. Clin Nucl Med 2000; 25:824-5. [PMID: 11043728 DOI: 10.1097/00003072-200010000-00018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- S T Lim
- Department of Nuclear Medicine and Institute for Medical Sciences, Chonbuk National University Hospital, Chonju, Korea
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Park SA, Choi KS, Bang JH, Huh K, Kim SU. Cisplatin-induced apoptotic cell death in mouse hybrid neurons is blocked by antioxidants through suppression of cisplatin-mediated accumulation of p53 but not of Fas/Fas ligand. J Neurochem 2000; 75:946-53. [PMID: 10936175 DOI: 10.1046/j.1471-4159.2000.0750946.x] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.8] [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: 01/01/2023]
Abstract
Peripheral neuropathy following cisplatin treatment is a major limiting factor in cisplatin chemotherapy of cancer patients. We investigated the pathomechanism underlying cisplatin neuropathy using a mouse dorsal root ganglion neuron-neuroblastoma hybrid cell line (N18D3) developed in our laboratory. DNA fragmentation, a characteristic feature of apoptosis, was induced in hybrid neurons following treatment with cisplatin. Accumulation of p53, Fas, and Fas ligand (Fas-L) was also demonstrated in these neurons. Preincubation with N-acetylcysteine (NAC), a precursor of glutathione, blocked cisplatin-induced apoptosis completely, whereas Trolox, a vitamin E analogue, blocked it partially. Cisplatin-induced p53 accumulation was suppressed by NAC treatment, whereas p53 accumulation was retarded by Trolox treatment. In contrast, neither NAC nor Trolox showed any inhibitory effect on cisplatin-induced Fas/Fas-L accumulation. These results suggest that the neuroprotective effects of antioxidants against cisplatin-induced neurotoxicity in hybrid neurons are mediated mainly through the inhibition of p53 accumulation but not of Fas/Fas-L accumulation by these antioxidants.
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Affiliation(s)
- S A Park
- Department of Neurology, Ajou University School of Medicine, Suwon, Korea
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Affiliation(s)
- S T Lim
- Department of Nuclear Medicine, Chonbuk National University Hospital, Chonju, Korea
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Abstract
The authors report a patient who suddenly developed memory loss without any other focal neurologic deficits. Neuropsychological testing showed severe anterograde verbal and visual memory deficits that improved gradually over several months, but not to the point of the premorbid state. Brain MRI with diffusion-weighted imaging performed 3 days after onset revealed acute infarction involving the bilateral fornices and the right genu of the corpus callosum. The authors suggest that acute fornix infarction may cause anterograde memory deficits.
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Affiliation(s)
- S A Park
- Department of Neurology, Ajou University School of Medicine, Suwon, Korea
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Abstract
This study aims to understand seizure control outcomes and the risk of developing new wake seizures (WS) related to the different types of pure sleep epilepsies (SE), which is important in making rational management plans. A retrospective review of the Yonsei Epilepsy Clinic Registry identified 63 patients with pure SE not belonging to any specific epileptic syndromes. They were divided into the group of generalized tonic-clonic seizures during sleep (S-GTCS : n = 21) and the group of partial epilepsies during sleep (S-PE: n = 42) on the basis of seizure phenomenology, EEG, and neuroimaging data. These patients were followed for 2 years and their clinical variables were analysed for seizure control outcomes and development of new WS. Of 21 patients with S-GTCS, 17 achieved a seizure-free outcome and only one patient developed a new WS, which was consistent with a partial-onset secondary GTCS in phenomenology. Of 42 patients with S-PE only 15 patients achieved a seizure-free outcome and 11 patients developed WS during the 2-year follow-up period. Higher baseline seizure frequency and longer duration of epilepsy were associated with a higher incidence of new WS. The results suggest that the patients with S-GTCS carry a favorable clinical course, thus driving privileges or freedom of daily activities can be conferred without delay once their seizures are well controlled. However, the seizure control outcome was poor and the development of WS was frequent in patients with recurrent S-PE.
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Affiliation(s)
- S A Park
- Department of Neurology, Yonsei University, College of Medicine, Seoul, Korea
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Abstract
Locked-in syndrome due to midbrain infarct is very rare. This report describes a patient with locked-in syndrome whose magnetic resonance images showed bilateral infarcts in the cerebral peduncle. Cerebral angiography disclosed bilateral irregular thrombotic narrowing of the vertebral and proximal basilar arteries with rostral basilar artery occlusion, a previously unreported findings.
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Affiliation(s)
- S A Park
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea
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Abstract
We studied the clinical characteristics, location of epileptogenic regions, and the surgical outcomes in 18 patients with intractable epilepsy associated with previous CNS infections. All patients underwent an extensive presurgical evaluation and 11 patients had intracranial EEG monitoring. On the basis of presurgical evaluation, epileptic regions were localized to the mesial temporal (n = 12) and the neocortical (n = 6) regions. The age of the time of CNS infection was significantly younger and the latent period of non-febrile seizures after CNS infection was longer in patients with mesial temporal lobe epilepsy (MTLE). MRI showed hippocampal atrophy and hippocampal signal changes in 11 of 12 patients with MTLE. Among 6 patients with neocortical epilepsy (NE) 5 patients had normal MRI and one showed cerebral hemi-atrophy. Surgery was successful (class I & II) in all patients with MTLE, however, in the patients with neocortical epilepsy, seizure-free results were not achieved in any patients after resective surgery (6 patients) and only 2 patients achieved Class II outcomes after a second epilepsy surgery consisting of neocortical resection. Patients with MTLE after CNS infection were differentiated from the group of neocortical epilepsy by an earlier onset of CNS infection, a prolonged latent period and a higher frequency of meningitis. The characteristic pathology in this group was hippocampal sclerosis and the surgical result was excellent. Neocortical epilepsy following CNS infection usually had no focal lesion on MRI and was associated with a relatively poor surgical result. This study suggested that the surgical outcome was influenced by the type of epileptic syndromes rather than the etiology of seizures. The association of MTLE with the younger age of CNS infections and with meningitis more frequently suggested that the neocortical neurons during infancy or early childhood may be more resistant to the epileptogenesis, or that the CNS infections in patients with MTLE might be milder in severity to cause selective injuries to the hippocampal neurons during their vulnerable stage.
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Affiliation(s)
- J H Lee
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea
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Park SA. [Nursing and law. The role of the nurse and the law]. Taehan Kanho 1993; 32:13-8. [PMID: 8501862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Rhee HY, Cho MY, Cho KJ, Kim YH, Kim KB, Kim KJ, Moon HJ, Park SA, Kang HS. [The effects of clinical application of a nursing diagnosis protocol]. Kanho Hakhoe Chi 1989; 19:40-62. [PMID: 2739234 DOI: 10.4040/jnas.1989.19.1.40] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
This study was conducted to measure the effects of clinical application of a Nursing Diagnosis Protocol. The dependent variables were the degree of patient's satisfaction and the degree of nurse's satisfaction with the nursing activity. Analysis of the effect of the use of the nursing diagnosis protocol was based on the nursing record. The subjects for this study were 61 nurses (experimental group 31, control group 30) and 155 patients (experimental group 55, control group 100) on four internal medicine wards in K University Hospital in Seoul.
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Park SA, Kang HS, Moon HJ, Kim KJ, Rhee HY, Cho MY, Cho KJ, Kim YH, Kim KB. [The use of nursing diagnosis in practice]. Kanho Hakhoe Chi 1989; 19:24-39. [PMID: 2739233 DOI: 10.4040/jnas.1989.19.1.24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
This study was conducted to investigate the present situation and problems related to the use of nursing diagnosis in practice. The data were obtained from 332 subjects (27 director of nursing service, 302 staff nurses) who worked in university hospitals in Korea from July through August 1988 using a mailed questionnaire. Data were analyzed by frequency, X2 test and t-test. The findings were as follows: 1. Clinical use of nursing diagnosis by directors of nursing service and staff nurses. 1) The majority of the nursing departments (88.9%) conducted group education on nursing diagnosis during the last 5 years and 81.5% of them kept a record format for nursing diagnosis; 88.9% of them had had prior experience with the nursing diagnosis. 2) Most of nurses (97.0%) had received education on nursing diagnosis. 2. Factors related to the clinical use of nursing diagnosis in nursing service departments and by staff nurses. 1) The one factor related to the use of nursing diagnosis in the nursing service department was the existence of a record. 2) Factors related to the use of nursing diagnosis by the staff nurses were the organization style of the nursing service department, group education during the last 5 years, existence of a record, the attitude of the director of nursing service, and prior experience of the use of the nursing diagnosis as characteristics of nursing service department and educational experience of nursing diagnosis as a character of nurse. 3. Problems with the use of nursing diagnosis. 1) The primary problem was the lack of time and personnel (mean:3.757); the second problem was the lack of knowledge and will to use nursing diagnosis in practice by the staff nurses (mean:3.546). 2) There was no significant difference in problems expressed by the director of nursing services and the nurses. The majority of nurses who worked in the university hospitals expressed interest in and concern about the use of nursing diagnosis. Most of the nurses had had education about on nursing diagnosis but use in practice was limited. The primary problem was lack of time and manpower.(ABSTRACT TRUNCATED AT 400 WORDS)
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Park SA. [Continuing education. The plan of nursing management practice (1)]. Taehan Kanho 1988; 27:37-41. [PMID: 3204976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Park SA, Kim SY. [Community nursing diagnosis and planning. 3. Community nursing diagnosis and planning of a geopolitical community]. Taehan Kanho 1987; 26:43-55. [PMID: 3695325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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