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Yeo HJ, Lee S, Yoon SH, Lee SE, Cho WH, Jeon D, Kim YS, Kim D. Extracorporeal Life Support as a Bridge to Lung Transplantation in Patients With Acute Respiratory Failure. Transplant Proc 2018; 49:1430-1435. [PMID: 28736018 DOI: 10.1016/j.transproceed.2017.02.064] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 02/10/2017] [Accepted: 02/23/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND Extracorporeal membrane oxygenation (ECMO) is being used more often as a bridge to transplantation (BTT) in patients with acutely decompensated end-stage lung disease in Korea. ECMO as a BTT may be the only rescue strategy for severe acute respiratory failure, but many centers still consider it to be a relative contraindication to lung transplantation because of its poor outcome. Because there are not enough lung donors, it is important to determine their optimal use. We reviewed and analyzed our experiences with the use of ECMO as a BTT in patients with acute respiratory failure. METHODS This was a retrospective analysis of all patients with acutely decompensated end-stage lung disease treated with ECMO as a bridge to lung transplantation between March 2012 and February 2016. RESULTS Of the 194 patients who underwent respiratory ECMO over a 4-year period, a BTT strategy was used for 19 patients (median age, 58 years) on our institution's lung transplantation waiting list (15 veno-venous, 3 veno-veno-arterial, 1 veno-arterial). Fourteen patients (73.7%) were successfully bridged to transplantation; however, 3 died while on the waiting list and 2 returned to their baseline functions without transplantation. The overall in-hospital survival rate was 57.9% (11 of 19), including the 9 (64.3%) patients who underwent transplantation. CONCLUSIONS Our findings support the view that well-selected candidates with acutely decompensated end-stage lung disease may be safely bridged until a suitable donor is identified. ECMO is not able to reverse the course of patients; however, it could be a life-saving option for patients with acute respiratory failure requiring lung transplantation.
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Kim YS, Kim MN, Lee KE, Hong JY, Oh MS, Kim SY, Kim KW, Sohn MH. Activated leucocyte cell adhesion molecule (ALCAM/CD166) regulates T cell responses in a murine model of food allergy. Clin Exp Immunol 2018; 192:151-164. [PMID: 29363753 DOI: 10.1111/cei.13104] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/09/2018] [Indexed: 12/14/2022] Open
Abstract
Food allergy is a major public health problem. Studies have shown that long-term interactions between activated leucocyte cell adhesion molecule (ALCAM/CD166) on the surface of antigen-presenting cells, and CD6, a co-stimulatory molecule, influence immune responses. However, there are currently no studies on the functions of ALCAM in food allergy. Therefore, we aimed to identify the functions of ALCAM in ovalbumin (OVA)-induced food allergy using ALCAM-deficient mice. Wild-type (WT) and ALCAM-deficient (ALCAM-/- ) mice were sensitized intraperitoneally and with orally fed OVA. The mice were killed, and parameters related to food allergy and T helper type 2 (Th2) immune responses were analysed. ALCAM serum levels increased and mRNA expression decreased in OVA-challenged WT mice. Serum immunoglobulin (Ig)E levels, Th2 cytokine mRNA and histological injuries were higher in OVA-challenged WT mice than in control mice, and these were attenuated in ALCAM-/- mice. T cell proliferation of total cells, CD3+ CD4+ T cells and activated T cells in immune tissues were diminished in OVA-challenged ALCAM-/- mice. Proliferation of co-cultured T cells and dendritic cells (DCs) was decreased by the anti-CD6 antibody. In addition, WT mice sensitized by adoptive transfer of OVA-pulsed ALCAM-/- BM-derived DCs showed reduced immune responses. Lastly, serum ALCAM levels were higher in children with food allergy than in control subjects. In this study, serum levels of ALCAM were elevated in food allergy-induced WT mice and children with food allergy. Moreover, immune responses and T cell activation were attenuated in OVA-challenged ALCAM-/- mice. These results indicate that ALCAM regulates food allergy by affecting T cell activation.
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Kim YS, Park SH, Han K, Bang CH, Lee JH, Park YM. Prevalence and incidence of chronic spontaneous urticaria in the entire Korean adult population. Br J Dermatol 2018; 178:976-977. [PMID: 29106703 DOI: 10.1111/bjd.16105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Kim JS, Kim YS, You SH. Abstract P1-13-14: Triple positive breast cancer ; a distictive subtype and consideration of systemic therapeutic approach. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p1-13-14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Triple positive breast cancer is one of intrinsic subtype in breast cancer that is defined namely, ER/PR/Her2 positive tumors. It has multiple strategies for systemic therapy according to the characteristics of hormonal and anti-HER2 responsiveness. Each targeted therapy plays cross-talks between HER-2 and estrogen receptor signaling pathway resulting in endocrine resistance and anti Her2 resistance.
Methods: We compared the triple positive subtype to the other breast cancer intrinsic subtypes to distinguish the uniqueness in their position among other breast cancer subtypes using retrospective analysis of two different cohorts; Korea Breast Cancer Society (KBCS) Breast cancer registry data (N=31266, Jan. 2006 – Dec. 2010) and database from St. Mary`s hospital Breast cancer registry (N=2216, Apr. 2009 – Mar. 2016).
Results: Median follow up duration of 76 months in KBCS cohort (2006-2010) showed the overall survival graph of triple positive breast cancer located in the middle in between Luminal A intrinsic subtype and HER2 enriched subtype(P<.001). Also HER2 directed trastuzumab therapy did not improve the overall survival in triple positive breast cancer patients (P=.899) in contrast to the improved overall survival using trastuzumab therapy in HER2 enriched subtype (P=.018). Like the preceding results, CMC breast cancer data showed the similar results in recurrence free survival (P<.001). and no recurrence free survival improvement using trastuzumab therapy in triple positive breast cancer patient during the median follow up of 33 months (P=0.800).
Conclusion:
1) Anti-HER2 therapy seems less beneficial in Triple positive breast cancer subtype regardless of breast cancer stage.
2) Triple positive breast cancer may require different therapeutic approaches
3) Other targeted agents (mTOR inhibitor, CDK4/6 inhibitor, PIK3CA inhibitor) can be a substitute option for the Trastuzumab therapy in triple positive breast cancer.
Citation Format: Kim JS, Kim YS, You SH. Triple positive breast cancer ; a distictive subtype and consideration of systemic therapeutic approach [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P1-13-14.
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Ogata K, Jeon S, Ko DS, Jung IS, Kim JH, Ito K, Kubo Y, Takei K, Saito S, Cho YH, Park H, Jang J, Kim HG, Kim JH, Kim YS, Choi W, Koh M, Uosaki K, Doo SG, Hwang Y, Han S. Evolving affinity between Coulombic reversibility and hysteretic phase transformations in nano-structured silicon-based lithium-ion batteries. Nat Commun 2018; 9:479. [PMID: 29396479 PMCID: PMC5797158 DOI: 10.1038/s41467-018-02824-w] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Accepted: 01/02/2018] [Indexed: 11/09/2022] Open
Abstract
Nano-structured silicon is an attractive alternative anode material to conventional graphite in lithium-ion batteries. However, the anode designs with higher silicon concentrations remain to be commercialized despite recent remarkable progress. One of the most critical issues is the fundamental understanding of the lithium-silicon Coulombic efficiency. Particularly, this is the key to resolve subtle yet accumulatively significant alterations of Coulombic efficiency by various paths of lithium-silicon processes over cycles. Here, we provide quantitative and qualitative insight into how the irreversible behaviors are altered by the processes under amorphous volume changes and hysteretic amorphous-crystalline phase transformations. Repeated latter transformations over cycles, typically featured as a degradation factor, can govern the reversibility behaviors, improving the irreversibility and eventually minimizing cumulative irreversible lithium consumption. This is clearly different from repeated amorphous volume changes with different lithiation depths. The mechanism behind the correlations is elucidated by electrochemical and structural probing.
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Ryu BH, Kim JY, Kim T, Kim MC, Kim MJ, Chong YP, Lee SO, Choi SH, Kim YS, Woo JH, Kim SH. Extensive severe fever with thrombocytopenia syndrome virus contamination in surrounding environment in patient rooms. Clin Microbiol Infect 2018; 24:911.e1-911.e4. [PMID: 29355730 DOI: 10.1016/j.cmi.2018.01.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 01/03/2018] [Accepted: 01/07/2018] [Indexed: 10/18/2022]
Abstract
OBJECTIVES Severe fever with thrombocytopenia syndrome (SFTS) is an emerging tick-borne disease in Korea and China. Although there is previous evidence of person-to-person transmission via direct contact with body fluids, the role of environmental contamination by SFTS virus (SFTSV) in healthcare settings has not been established. We therefore investigated the contamination of the healthcare environment by SFTSV. METHODS We investigated the possible contamination of hospital air and surfaces with SFTSV transmission by collecting air and swabbing environmental surface samples in two hospitals treating six SFTS patients between March and September 2017. The samples were tested using real-time RT-PCR for SFTS M and S segments. RESULTS Of the six SFTS patients, four received mechanical ventilation and three died. Five rooms were occupied by those using mechanical ventilation or total plasma exchange therapy in isolation rooms without negative pressure and one room was occupied by a patient bedridden due to SFTS. SFTSV was detected in 14 (21%) of 67 swab samples. Five of 24 swab samples were obtained from fomites including stethoscopes, and 9 of 43 were obtained from fixed structures including doorknobs and bed guardrails. Some samples from fixed structures such as television monitors and sink tables were obtained in areas remote from the patients. SFTSV RNA was not detected in five air samples from three patients' rooms. CONCLUSIONS Our data suggest that SFTSV contamination was extensive in surrounding environments in SFTS patients' rooms. Therefore, more strict isolation methods and disinfecting procedures should be considered when managing SFTS patients.
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Sol IS, Kim YH, Park YA, Lee KE, Hong JY, Kim MN, Kim YS, Oh MS, Yoon SH, Kim MJ, Kim KW, Sohn MH, Kim KE. Relationship between sputum clusterin levels and childhood asthma. Clin Exp Allergy 2017; 46:688-95. [PMID: 26661728 DOI: 10.1111/cea.12686] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Revised: 11/27/2015] [Accepted: 12/05/2015] [Indexed: 12/25/2022]
Abstract
BACKGROUND Clusterin is a sensitive cellular biosensor of oxidative stress and has been studied as a biomarker for inflammation-associated diseases. Clusterin levels in childhood asthma have not been evaluated. OBJECTIVES (1) To evaluate sputum clusterin levels in children with asthma compared to a control group. (2) To assess the relationships between sputum clusterin levels and airway inflammation, pulmonary function, and bronchial hyperresponsiveness. METHODS This study included 170 children aged 5-18 years with stable asthma (n = 91), asthma exacerbation (n = 29), or no asthma (healthy controls; n = 50). Induced sputum, pulmonary function, and methacholine challenge tests were performed. Stable asthma was classified into two groups according to the severity. Clusterin levels in sputum were measured using an enzyme-linked immunosorbent assay. RESULTS Children with stable asthma had a higher clusterin level than healthy controls [4540 (3872-5651) pg/mL vs. 3857 (1054-4369) pg/mL, P < 0.001]. The clusterin level was also more elevated in eosinophil-dominant sputum than in non-eosinophilic sputum in stable asthma [5094 (4243-6257) pg/mL vs. 4110 (1871-4839) pg/mL, P = 0.0017]. Clusterin levels were associated with asthma severity. Paradoxically, clusterin levels were lower during asthma exacerbation than in stable asthma [1838 (350-4790] pg/mL vs. 4540 (3872-5651) pg/mL, P < 0.001]. Clusterin levels were strongly correlated with the methacholine concentration that caused a 20% decrease in the forced expiratory volume in 1 s (r = -0.617, P < 0.001); there was no significant correlation between clusterin levels and other pulmonary function parameters. CONCLUSIONS AND CLINICAL RELEVANCE Clusterin levels were altered in children with stable asthma and asthma exacerbation because of its antioxidant and anti-inflammatory effects. Clusterin may be a marker that reflects airway inflammation and severity of symptoms, and it can be used in the assessment and management of childhood asthma.
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Hong CK, Hwang SY, Lee KY, Kim YS, Ha YR, Park SO. Metronome vs. Popular Song: A Comparison of Long-Term Retention of Chest Compression Skills after Layperson Training for Cardiopulmonary Resuscitation. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791602300303] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Introduction Long-term retention of cardiopulmonary resuscitation (CPR) skill is challenging for layperson trainees. This study compared the long-term retention of chest compression skills after either metronome-guided (MG) or popular song-guided (PG) CPR training. Methods This was a prospective randomised simulation trial. Untrained laypersons were randomly allocated to MG (n=61) or PG (n=68) groups at CPR training sessions. After CPR training, each participant performed 5-cycle CPR using a manikin with a Skill-Reporter™ immediately and six months afterwards. Results Immediately after training, the mean compression rate (MCR) was slightly higher in the PG than the MG group (107.4 vs. 102.2/min; p<0.0001), but there was no significant difference in the proportions of participants with an appropriate chest compression rate (100-120/min) (PSACCR) between the MG and PG (53/61 (86.9%) vs. 65/68 (95.6%); p=0.114). Six months later, MCR was faster in the MG than the PG (124.8 vs. 110.0/min; p<0.0001), and PSACCR in the PG was higher than that in the MG (62/68 (91.2%) vs. 25/61 (41.0%); p<0.0001). In both tests, there were no significant differences in other chest compression parameters of between the two groups, except for a minimal difference in incomplete chest release. Conclusion CPR training using a popular song is more effective than metronome-guided training in helping laypersons to maintain recommended compression rates after 6 months. (Hong Kong j.emerg.med. 2016;23:145-152)
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Park I, Kim YS, Sym SJ, Ahn HK, Kim KK, Park YH, Lee JN, Shin DB. Metastasectomy for recurrent or metastatic biliary tract cancers: A single center experience. Indian J Cancer 2017; 54:57-62. [PMID: 29199665 DOI: 10.4103/0019-509x.219581] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
PURPOSE To assess efficacy or long-term result of metastasectomy for recurrent or metastatic biliary tract carcinoma (BTC), we conducted a retrospective review of the outcomes of metastasectomy for recurrent or metastatic BTCs, comprising intrahepatic cholangiocellular carcinoma (IHCCC), proximal and distal common bile duct cancer (pCBDC and dCBDC), gallbladder cancer (GBC), and ampulla of Vater cancer (AoVC). PATIENTS AND METHODS The clinicopathological features and outcomes of BTC patients who underwent surgical resection for the primary and metastatic disease at the Gachon University Gil Medical Centre from 2003 to 2013 were reviewed retrospectively. RESULTS We found 19 eligible patients. Primary sites were GBC (seven patients, 37%), IHCCC (five patients, 26%), dCBDC (three patients, 16%), pCBDC (two patients, 11%), and AoVC (two patients, 11%). Eight patients (42%) had synchronous metastasis whereas 11 (58%) had metachronous metastasis. The most common metastatic site was liver (nine patients, 47%), lymph node (nine patients, 47%), and peritoneum (three patients, 16%). Nine patients (47%) achieved R0 resection, whereas four (21%) and six (32%) patients had R1 and R2 resection, respectively. With a median follow-up period of 26.7 months, the estimated median overall survival (OS) was 18.2 months (95% confidence interval, 13.6-22.9 months). Lower Eastern Cooperative Oncology Group performance status (P = 0.023), metachronous metastasis (P = 0.04), absence of lymph node metastasis (P = 0.009), lower numbers of metastatic organs (P < 0.001), normal postoperative CA19-9 level (P = 0.034), and time from diagnosis to metastasectomy more than 1 year (P = 0.019) were identified as prognostic factors for a longer OS after metastasectomy. CONCLUSIONS For recurrent or metastatic BTCs, metastasectomy can be a viable option for selected patients.
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Kim YS, Song J, Lee D, Park Hyo J, Kim Dong K, Kim H. Gastroprotective effects of HT074, combined extracts of Inula britannica and Paeonia lactiflora on experimental gastric ulcer models in Sprague-Dawley rats. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Park SY, Kwon JS, Kim JY, Kim SM, Jang YR, Kim MC, Cho OH, Kim T, Chong YP, Lee SO, Choi SH, Kim YS, Woo JH, Kim SH. Severe fever with thrombocytopenia syndrome-associated encephalopathy/encephalitis. Clin Microbiol Infect 2017; 24:432.e1-432.e4. [PMID: 28899841 DOI: 10.1016/j.cmi.2017.09.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 08/28/2017] [Accepted: 09/05/2017] [Indexed: 01/15/2023]
Abstract
OBJECTIVES Severe fever with thrombocytopenia syndrome (SFTS) virus has a variety of central nervous system (CNS) manifestations. However, there are limited data regarding SFTS-associated encephalopathy/encephalitis (SFTSAE) and its mechanism. METHODS All patients with confirmed SFTS who underwent cerebrospinal fluid (CSF) examination due to suspected acute encephalopathy were enrolled in three referral hospitals between January 2013 and October 2016. Real-time RT-PCR for SFTS virus and chemokine/cytokines levels from blood and CSF were analysed. RESULTS Of 41 patients with confirmed SFTS by RT-PCR for SFTS virus using blood samples, 14 (34%) underwent CSF examination due to suspected SFTSAE. All 14 patients with SFTSE revealed normal protein and glucose levels in CSF, and CSF pleocytosis was uncommon (29%, 4/14). Of the eight patients whose CSF was available for further analysis, six (75%) yielded positive results for SFTS virus. Monocyte chemoattractant protein-1 (MCP-1) and interleukin-8 (IL-8) level in CSF were significantly higher than those in serum (geometric mean 1889 pg/mL in CSF versus 264 pg/mL in serum for MCP-1, p = 0.01, and geometric mean 340 pg/mL in CSF versus 71 pg/mL in serum for IL-8, p = 0.004). CONCLUSIONS The CNS manifestation of SFTS as acute encephalopathy/encephalitis is a common complication of SFTS. Although meningeal inflammation was infrequent in patients with SFTSAE, SFTS virus was frequently detected in CSF with elevated MCP-1 and IL-8. These findings indicate that possible direct invasion of the CNS by SFTS virus with the associated elevated cytokine levels in CSF may play an important role in the pathogenesis of SFTSAE.
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Kim T, Jin CE, Sung H, Koo B, Park J, Kim SM, Kim JY, Chong YP, Lee SO, Choi SH, Kim YS, Woo JH, Lee JH, Lee JH, Lee KH, Shin Y, Kim SH. Molecular epidemiology and environmental contamination during an outbreak of parainfluenza virus 3 in a haematology ward. J Hosp Infect 2017; 97:403-413. [PMID: 28893615 PMCID: PMC7114920 DOI: 10.1016/j.jhin.2017.09.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 09/05/2017] [Indexed: 11/25/2022]
Abstract
Background Although fomites or contaminated surfaces have been considered as transmission routes, the role of environmental contamination by human parainfluenza virus type 3 (hPIV-3) in healthcare settings is not established. Aim To describe an hPIV-3 nosocomial outbreak and the results of environmental sampling to elucidate the source of nosocomial transmission and the role of environmental contamination. Methods During an hPIV-3 outbreak between May and June 2016, environmental surfaces in contact with clustered patients were swabbed and respiratory specimens used from infected patients and epidemiologically unlinked controls. The epidemiologic relatedness of hPIV-3 strains was investigated by sequencing of the haemagglutinin–neuraminidase and fusion protein genes. Findings Of 19 hPIV-3-infected patients, eight were haematopoietic stem cell recipients and one was a healthcare worker. In addition, four had upper and 12 had lower respiratory tract infections. Of the 19 patients, six (32%) were community-onset infections (symptom onset within <7 days of hospitalization) and 13 (68%) were hospital-onset infections (≥7 days of hospitalization). Phylogenetic analysis identified two major clusters: five patients, and three patients plus one healthcare worker. Therefore, seven (37%) were classified as nosocomial transmissions. hPIV-3 was detected in 21 (43%) of 49 environmental swabs up to 12 days after negative respiratory polymerase chain reaction conversion. Conclusion At least one-third of a peak season nosocomial hPIV-3 outbreak originated from nosocomial transmission, with multiple importations of hPIV-3 from the community, providing experimental evidence for extensive environmental hPIV-3 contamination. Direct contact with the contaminated surfaces and fomites or indirect transmission from infected healthcare workers could be responsible for nosocomial transmission.
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Kim YS, Lee HY, Lee MH, Simms T, Park BH. Mental health literacy in korean older adults: A cross-sectional survey. J Psychiatr Ment Health Nurs 2017; 24:523-533. [PMID: 28474412 DOI: 10.1111/jpm.12395] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/28/2017] [Indexed: 11/28/2022]
Abstract
UNLABELLED WHAT IS KNOWN ON THE SUBJECT?: Mental health literacy is a fairly new concept, first introduced in 1997. It refers to what people know and believe about mental health disorders. People's knowledge and beliefs help them to recognize, manage and prevent mental disorders. Generally, older adults have lower health literacy compared to young and middle-aged adults. WHAT THIS STUDY ADDS TO EXISTING KNOWLEDGE?: This is the first study on the mental health literacy of Korean older adults. This study looks beyond peoples' ability to recognize mental health disorders and their opinions about them. It identifies factors that are associated with mental health literacy (level of education and social support, the number of people in one's social circles and how individuals rate their health). WHAT ARE THE IMPLICATIONS FOR PRACTICE?: Older adults might get more out of mental health literacy programmes in group or social settings. Programmes that use older adult peer educators/supporters, such as the "older people's champions" of the Healthy Passport programme in England, might make the programmes more effective. Mental health campaigns, such as Australia's beyondblue, might increase mental health literacy of older adults. ABSTRACT Introduction Korea is experiencing rapid population ageing, spurring an increased need for mental health services for the elderly. Approximately one-third of Korean older adults experience depressive symptoms, and Korea has the highest elder suicide rate among 34 developed nations. Mental health literacy is an important component of promoting mental health, yet studies on the concept have been conducted in few countries. Aim This study examines the level of mental health literacy among Korean older adults and identifies factors associated with their mental health literacy. Method A cross-sectional survey was conducted with 596 community-dwelling Korean adults aged 65 and older. Andersen's Behavioral Model of Health Services Use framed the study. Results Overall, participants displayed low levels of mental health literacy. They had difficulty recognizing their mental health issues and had limited knowledge about self-help strategies. Mental health literacy was positively associated with education, social support, social network and health status. Discussion and Implications This study highlights a need for efforts to increase mental health literacy among Korean older adults. Strategies that have the potential to empower this population to proactively attend to their mental health include community-based education and national mental health campaigns.
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Kim YS, Lee MJ. Ordinal response generalized difference in differences with varying categories: The health effect of a disability program in Korea. HEALTH ECONOMICS 2017; 26:1123-1131. [PMID: 28544209 DOI: 10.1002/hec.3526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2016] [Revised: 03/30/2017] [Accepted: 04/17/2017] [Indexed: 06/07/2023]
Abstract
We consider the use of difference in differences (DD) to evaluate the effect of an activity assistance program on the health of severely disabled Koreans. There are, however, 2 problems in the data: the number of response categories for self-assessed health changed over the waves of the repeated cross-section survey and the "parallel untreated response path" assumption for DD is suspect. We show how to overcome these problems by renormalizing parameters and applying "generalized difference in differences (GDD)." We find a significantly positive effect of the program with DD, but not with GDD. Our solutions should prove useful in applications in which one or other of these problems arise.
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Youk J, Kim YS, Lim JA, Shin DY, Koh Y, Lee ST, Kim I. Depletion of nerve growth factor in chemotherapy-induced peripheral neuropathy associated with hematologic malignancies. PLoS One 2017; 12:e0183491. [PMID: 28827818 PMCID: PMC5565270 DOI: 10.1371/journal.pone.0183491] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 08/06/2017] [Indexed: 11/19/2022] Open
Abstract
Objective To investigate whether the depletion of nerve growth factor (NGF) is associated with the development of chemotherapy-induced peripheral neuropathy (CIPN) in patients with hematologic malignancy. Methods We prospectively enrolled hematologic cancer patients who had a plan to receive bortezomib, thalidomide, or vincristine. Baseline NGF levels were measured within one week before the start date of chemotherapy. Follow-up NGF levels were measured after four months from the start date of chemotherapy or the date when CIPN was initially diagnosed. Results Baseline and follow-up NGF pairs were measured in 45 patients (male/female = 27/18, median age = 63 years old). CIPN has developed in 28 patients. In the CIPN group, the level of NGF was significantly decreased after chemotherapy compared to the baseline (△NGF = −3.52 ±5.72; p-value = 0.003), while the NGF level of the no-CIPN group was not changed after chemotherapy. The differences in △NGF levels between the CIPN and no-CIPN group were more profound when analyzed in the subgroup of newly diagnosed multiple myeloma patients (△NGF = −4.14 ± 4.87 pg/ml for the CIPN group and +2.52 ± 8.39 pg/ml for the no-CIPN group; p-value = 0.043). Conclusions This study shows that the depletion of NGF occurs during the development of CIPN, suggesting pathogenesis based on the role of NGF and therapeutic implications.
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Kim YS, Cha YS, Kim MS, Kim HJ, Lee YS, Youk H, Kim HI, Kim OH, Cha KC, Kim H, Lee KH, Hwang SO. The usefulness of diffusion-weighted magnetic resonance imaging performed in the acute phase as an early predictor of delayed neuropsychiatric sequelae in acute carbon monoxide poisoning. Hum Exp Toxicol 2017; 37:587-595. [PMID: 28812367 DOI: 10.1177/0960327117722821] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Delayed onset of neuropsychiatric symptoms after apparent recovery from acute carbon monoxide (CO) poisoning has been described as delayed neuropsychiatric sequelae (DNS). No previous study has determined whether early use of diffusion-weighted magnetic resonance imaging (DWI) can predict which patients will develop DNS in the acute CO poisoning. This retrospective observational study was performed on adult patients with acute CO poisoning consecutively treated over a 17-month period. All included patients with acute CO poisoning underwent DWI to evaluate brain injury within 72 h after CO exposure. DWI was evaluated as follows: (1) presence of pathology, (2) number of pathologies, (3) asymmetry, and (4) location of pathology. Patients were divided into two groups. The DNS group was composed of patients with delayed sequelae, while the non-DNS group included patients with no sequelae. A total of 102 patients with acute CO poisoning were finally enrolled in this study. DNS developed in 10 patients (9.8%). Between the DNS group and the non-DNS group, presence of pathology on DWI and initial Glasgow Coma Scale (GCS) showed significant difference. There was also a statistical difference between the non-DNS group and DNS group in terms of CO exposure time, troponin I, rhabdomyolysis, acute kidney injury, and pneumonia. The presence of pathology in DWI and initial GCS (cutoff: <12) at the emergency department served as an early predictors of DNS.
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Kim YS, Balland V, Limoges B, Costentin C. Cyclic voltammetry modeling of proton transport effects on redox charge storage in conductive materials: application to a TiO 2 mesoporous film. Phys Chem Chem Phys 2017; 19:17944-17951. [PMID: 28664973 DOI: 10.1039/c7cp02810e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyclic voltammetry is a particularly useful tool for characterizing charge accumulation in conductive materials. A simple model is presented to evaluate proton transport effects on charge storage in conductive materials associated with a redox process coupled with proton insertion in the bulk material from an aqueous buffered solution, a situation frequently encountered in metal oxide materials. The interplay between proton transport inside and outside the materials is described using a formulation of the problem through introduction of dimensionless variables that allows defining the minimum number of parameters governing the cyclic voltammetry response with consideration of a simple description of the system geometry. This approach is illustrated by analysis of proton insertion in a mesoporous TiO2 film.
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Kim BS, Lee JG, Cho Y, Song SH, Huh KH, Kim MS, Kim YS. Reduction of Slit Diaphragm-associated Molecules by Sirolimus: Is it Enough to Induce Proteinuria? Transplant Proc 2017; 49:1165-1169. [PMID: 28583549 DOI: 10.1016/j.transproceed.2017.03.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Sirolimus (SRL), a mammalian target of rapamycin inhibitor, is widely used in transplantation, but the mechanisms whereby it induces adverse effects, such as proteinuria and edema, remain unclear. To determine whether isolated SRL induces proteinuria or not, the authors intraperitoneally injected C57BL/6 mice with different doses of SRL (0 mg/[kg·d], 3 mg/[kg·d], 10 mg/[kg·d], or 30 mg/[kg·d]) for 24 days. Urinary albumin excretion was then quantified using a double-sandwich enzyme-linked immunosorbent assay, and serum creatinine levels were measured using a single dry-film chemistry auto-analyzer. The mRNA expression levels of various genes were also measured by polymerase chain reaction. Urinary albumin was not detected in the SRL-treated mice, but serum creatinine levels were found to increase dose-dependently and were significantly higher in the animals treated with 30 mg/kg of SRL than in untreated controls. Glomerular mRNA expression profiling showed down-regulations of podocyte-related genes (Wilms tumor 1, synaptopodin, nephrin, CD2-associated protein, and podocin) and of transforming growth factor-beta (a marker of fibrosis) in sirolimus-treated mice. In addition, expressions of the antiapoptotic genes Bcl-2 and Bcl-xL were also down-regulated. Furthermore, the protein levels of these genes in mice kidney were also decreased by sirolimus. Although sirolimus treatment reduced the expressions of slit diaphragm-associated molecules and increased serum creatinine levels, it failed to induce proteinuria. Our findings indicate that proteinuria is not induced by isolated SRL treatment. Further studies are required to identify conditions in which sirolimus induces proteinuria.
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Lee HH, Kang SK, Yoon YE, Huh KH, Kim MS, Kim SI, Kim YS, Han WK. Impact of the Ratio of Visceral to Subcutaneous Adipose Tissue in Donor Nephrectomy Patients. Transplant Proc 2017; 49:940-943. [PMID: 28583563 DOI: 10.1016/j.transproceed.2017.03.039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
OBJECTIVE It was reported that a metabolic syndrome affected the remaining renal function after living donor nephrectomy. However, the measurement of waist circumference is unclear because it cannot distinguish between visceral adipose tissue (VAT) and subcutaneous adipose tissue (SAT). We investigate the clinical correlation between body adipose tissue and renal function recovery after living donor nephrectomy. METHODS From July 2013 to February 2015, 75 living kidney donors were enrolled. The VAT and SAT were measured by preoperative computed tomography (CT) scan. Body mass index (BMI), VAT, SAT, and VAT-to-SAT ratio were analyzed according to a postoperative renal function recovery. Receiver operating characteristic (ROC) was performed to predict estimated glomerular filtration rate (eGFR) less than 60 mL/min/1.73 m2 at postoperative 6 months for BMI, VAT, SAT, and VAT-to-SAT ratio. RESULTS The lowest value of eGFR (57.52 ± 11.20 mL/min/1.73 m2) was measured at postoperative day 7. There was no statistically significant difference in eGFR between 1 month and 3 months. BMI, VAT, SAT, and VAT-to-SAT ratio showed a statistically significant correlation with each other (Pearson correlation, P < .05). Also, the recovery time of eGFR was correlated with VAT-to-SAT ratio; it was significant at postoperative 1, 3, and 6 months. VAT-to-SAT ratio (0.654, 95% confidence interval 0.525-0.783, P = .024) had higher predictive value in ROC. CONCLUSION We developed a new variable to predict the value of lower eGFR (less than 60 mL/min/1.73 m2) at a postoperative 6 months in living kidney donor. According to a CT scan, VAT-to-SAT ratio can predict renal function recovery.
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Kim EY, Lee HY, Kim YS, Park I, Ahn HK, Cho EK, Jeong YM, Kim JH. Prognostic significance of cachexia score assessed by CT in male patients with small cell lung cancer. Eur J Cancer Care (Engl) 2017; 27. [PMID: 28426181 DOI: 10.1111/ecc.12695] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/18/2017] [Indexed: 11/26/2022]
Abstract
To determine the prognostic significance of CT-determined cachexia scores (CSs) in 127 consecutive male small cell lung cancer (SCLC) patients, cross-sectional areas of muscle and fat tissues at the third lumbar vertebra (L3) were retrospectively measured on baseline CT images. CSs were determined based on the presence of sarcopenia and/or adipopenia. According to the presence of sarcopenia (L3 muscle index <55 cm2 /m2 , 86.8%) and adipopenia (L3 fat index <22 cm2 /m2 , 11.8%), CSs were defined as follows: CS2 (sarcopenia and adipopenia, 11.8%), CS1 (sarcopenia only, 74.8%) and CS0 (13.4%). CS2 was significantly related to lower body mass index (p < .001) and poor performance status (p = .002), and patients with CS2 had shorter OS than patients with CS1 or CS0 (median OS, 5.0 months vs. 8.9 months vs. 18.3 months; p = .007). Multivariable analysis revealed that CS was an independent prognostic factor of poor survival (HR, 1.99 for CS1 and 2.59 for CS2, p = .036 and .023, CS0 as a reference), along with extensive stage (p < .001), supportive care only (p < .001) and an elevated lactate dehydrogenase (p = .005). CT-determined CSs, based on the presence of sarcopenia and/or adipopenia, could be used to predict prognosis in male SCLC.
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Woo YS, Choi CS, Park JS, Jahng J, Kim YS. Quiz : Unusual whitish gastric mucosal lesion. Acta Gastroenterol Belg 2017; 80:342. [PMID: 29560711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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Kim T, Kim ES, Park SY, Sung H, Kim MN, Kim SH, Lee SO, Choi SH, Jeong JY, Woo JH, Chong YP, Kim YS. Phenotypic changes of methicillin-resistant Staphylococcus aureus during vancomycin therapy for persistent bacteraemia and related clinical outcome. Eur J Clin Microbiol Infect Dis 2017; 36:1473-1481. [PMID: 28337607 DOI: 10.1007/s10096-017-2956-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 03/02/2017] [Indexed: 12/13/2022]
Abstract
Persistent bacteraemia (PB) due to methicillin-resistant Staphylococcus aureus (MRSA) that fails to respond to glycopeptide therapy is a well-documented clinical problem. There are limited data on changes in agr functionality, vancomycin susceptibility and heteroresistance during MRSA PB. Thus, the frequency of these changes and their clinical significance remain unclear. Only patients with MRSA PB (≥7 days) from a prospective cohort of S. aureus bacteraemia were included. We collected isogenic paired strains and compared vancomycin MIC, vancomycin heteroresistance, and agr functionality between initial and final blood isolates. We also assessed the clinical outcome. A total of 49 patients had MRSA PB over 22 months. Bacteraemia persisted for a median of 13 days and most patients (98%) received glycopeptide as initial therapy. Among 49 isogenic pairs, only one pair showed a vancomycin MIC increase ≥2-fold by broth microdilution method, and only seven (14%) by E-test. Significant portions of initial isolates had vancomycin heteroresistance (49%) and agr dysfunction (76%). Development of vancomycin heteroresistance during PB occurred in four (16%) among 25 initial vancomycin-susceptible isolates, and acquisition of agr dysfunction occurred in two (16%) among 12 initial agr-functional isolates. Changes in the opposite direction occasionally occurred. These phenotypic changes during PB were not associated with mortality, whereas agr dysfunction of the initial isolates was significantly associated with mortality. During MRSA PB, phenotypic changes of MRSA isolates occurred occasionally under prolonged vancomycin exposure but were not significantly associated with clinical outcome. In contrast, initial agr dysfunction could be a predictor for mortality in MRSA PB.
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Kim YS, Kaidina AM, Chiang JH, Yarygin KN, Lupatov AY. [Molecular markers of cancer stem cells verified in vivo]. BIOMEDIT︠S︡INSKAI︠A︡ KHIMII︠A︡ 2017; 62:228-38. [PMID: 27420613 DOI: 10.18097/pbmc20166203228] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This systematic review aims to analyze molecular markers of cancer stem cells. Only studies that confirmed tumor-initiating capacity of this population by in vivo assay in immunodeficient mice were included. Final sample of papers that fully correspond with initial aim consists of 97 original studies. The results of their analysis reveal that markers commonly used for cancer stem cells deriving were as follows: CD133, СD44, ALDH, CD34, CD24 and EpCAM. The review also contains description of molecular features of some cancer stem cell markers, modern approaches to cancer treatment by targeting this population and brief assessment of cancer stem cell theory development.
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Kim JT, Hong SH, Park HJ, Kim YS, Suh JY, Lee JK, Park JM, Maity T, Eckert J, Kim KB. Deformation mechanisms to ameliorate the mechanical properties of novel TRIP/TWIP Co-Cr-Mo-(Cu) ultrafine eutectic alloys. Sci Rep 2017; 7:39959. [PMID: 28067248 PMCID: PMC5220307 DOI: 10.1038/srep39959] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 11/28/2016] [Indexed: 11/09/2022] Open
Abstract
In the present study, the microstructural evolution and the modulation of the mechanical properties have been investigated for a Co-Cr-Mo (CCM) ternary eutectic alloy by addition of a small amount of copper (0.5 and 1 at.%). The microstructural observations reveal a distinct dissimilarity in the eutectic structure such as a broken lamellar structure and a well-aligned lamellar structure and an increasing volume fraction of Co lamellae as increasing amount of copper addition. This microstructural evolution leads to improved plasticity from 1% to 10% without the typical tradeoff between the overall strength and compressive plasticity. Moreover, investigation of the fractured samples indicates that the CCMCu alloy exhibits higher plastic deformability and combinatorial mechanisms for improved plastic behavior. The improved plasticity of CCMCu alloys originates from several deformation mechanisms; i) slip, ii) deformation twinning, iii) strain-induced transformation and iv) shear banding. These results reveal that the mechanical properties of eutectic alloys in the Co-Cr-Mo system can be ameliorated by micro-alloying such as Cu addition.
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Yoon YE, Cho YI, Kim SY, Lee HH, Huh KH, Kim YS, Han WK. Plasma Neutrophil Gelatinase-associated Lipoprotein in Living Kidney Donors. Transplant Proc 2017; 48:738-41. [PMID: 27234725 DOI: 10.1016/j.transproceed.2015.12.094] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 12/30/2015] [Indexed: 12/20/2022]
Abstract
BACKGROUND Neutrophil gelatinase-associated lipocalin (NGAL) is a biomarker for acute kidney injury. This study was conducted to determine the clinical implications of perioperative plasma NGAL levels for renal function after living donor nephrectomy. METHODS Between July 2013 and May 2014, 112 donors underwent live donor nephrectomy at our institution. Donor plasma NGAL levels were measured perioperatively for 6 months. The relationship between perioperative plasma NGAL and recovery of renal function was analyzed. Renal function was estimated with the Modification of Diet in Renal Disease formula. RESULTS Mean preoperative NGAL was 62.1 ± 29.5 ng/mL. Plasma NGAL was most elevated 1 week postoperatively (218 ± 95.5 ng/mL), and stabilized after 1 month (122.9 ± 45.3 ng/mL). Preoperative plasma NGAL was not correlated with donor age or preoperative estimated glomerular filtration rates (eGFR), but was negatively correlated with 6-month eGFR (r = -0.458, P < .001). During the observation period, plasma NGAL at 1 week was most correlated with 6-month eGFR (r = -0.554, P < .001). An ROC curve analysis showed that age, preoperative eGFR, and 1-week postoperative plasma NGAL were highly predictive of developing of chronic kidney disease (CKD), defined as eGFR <60 mL/min/1.73 m(2), 6 months postoperatively (AUC = 0.91, P < .001). One-week postoperative plasma NGAL was also independently associated with CKD risk at 6 months (odds ratio: 1.13 for each 10 ng/mL increase, P = .013). CONCLUSION Plasma NGAL becomes elevated after kidney donation and can provide information about acute kidney injury during the compensatory hyperfiltration period. Donors with increased perioperative plasma NGAL require close observation because their possibility of developing CKD after donation may be greater.
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Lim HJ, Koo TY, Lee J, Huh KH, Park JB, Cho J, Lee S, Ro H, Han S, Park B, Park S, Chung W, Park SK, Kim C, Kim SJ, Kim YS, Ahn C, Yang J. Health-Related Quality of Life of Kidney Transplantation Patients: Results from the KoreaN Cohort Study for Outcome in Patients With Kidney Transplantation (KNOW-KT) Study. Transplant Proc 2017; 48:844-7. [PMID: 27234749 DOI: 10.1016/j.transproceed.2015.12.101] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 12/30/2015] [Indexed: 11/17/2022]
Abstract
BACKGROUND As patient and graft survival rates have been improving after kidney transplantation, health-related quality of life (HR-QOL) has become an important indicator of effective treatment. This study aimed to evaluate changes in HR-QOL after kidney transplantation. MATERIALS AND METHODS The KoreaN cohort study for Outcome in patients With Kidney Transplantation (KNOW-KT) is a multicenter, observational, 9-year, cohort study. The HR-QOL of patients in the KNOW-KT study was assessed before transplantation and 2 years after transplantation using the Kidney Disease Quality of Life Short Form (KDQOL-SF) including chronic kidney disease targeted area and the Medical Outcome Study 36-item Short Form Health Survey (SF-36). Multivariate linear regression was used to identify significant factors associated with follow-up QOL scores. RESULTS A total of 175 patients from 8 centers were analyzed. All QOL scores including the total QOL score, chronic kidney disease targeted score, and SF-36 at the 2-year follow-up were significantly increased compared to baseline values. Both physical and mental scale scores were improved after transplantation. CONCLUSION The QOL scores for both the mental and physical scales were improved at 2 years after kidney transplantation. High glomerular filtration rate at 2 years, high baseline QOL score, and low body mass index were associated with good follow-up QOL scores. Kidney transplantation for an Asian population with end-stage renal disease can result in better QOL as well as better patient and graft survival.
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Kim YS, Han HS, Sang JH. Adnexal torsion in early pregnancy after assisted reproduction: can the adnexa be saved? CLIN EXP OBSTET GYN 2017; 44:135-137. [PMID: 29714883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Adnexal torsion occurs when the ovary and fallopian tube twist on the axis created between the infundibulopelvic ligament and the utero-ovarian ligament. The symptoms are mostly unspecific and diagnosis is therefore not simple. Early diagnosis is essential to preserve organ function and fertility. The increased use of assisted reproductive technologies has led to an increase in the risk of adnexal torsion, particularly in pregnant women or women with ovarian hyperstimulation syndrome (OHSS). A gestational age eight-week pregnant woman who received in vitro fertilization (IVF) came to the clinic and was suspected of adnexal torsion. The patient underwent an operation and the biopsy histologically confirmed ischemia. Here the authors report a case with comparison to other studies, the early diagnosis, and early operation that could save adnexa.
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Juhn JW, Lee KC, Wi HM, Kim YS, Nam YU. Operation results of the KSTAR far infrared interferometer. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2016; 87:11E131. [PMID: 27910476 DOI: 10.1063/1.4962064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The 2015 KSTAR experimental campaign was the first year of routine measurement with a far infrared interferometer (FIRI) utilizing 118.87 μm CH3OH lasers at maximum 200 mW CW beam power. By using rtEFIT reconstruction, the path lengths of interferometers can be calculated and so the line-averaged electron densities n¯e from the FIRI and a millimeter-wave interferometer were in excellent agreement. In this way, the number of successfully diagnosed discharges is counted: 1003 shots or 83.7% of sustained discharges, defined as shots of plasma current IP ≥ 0.3 MA with pulse lengths tf ≥ 2.0 s, have good-quality FIRI data within a few fringe jump errors. In addition, real-time H-mode density feedback control based on the FIRI was also successfully achieved with supersonic molecular beam injection as an actuator. Both constant density and controlled linear increment with a ramp-up rate of 1.0 × 1019 m-3 s-1 were achieved.
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Lee SG, Yoo JW, Kim YS, Nam UW, Moon MK. Experimental results from an X-ray imaging crystal spectrometer utilizing multi-wire proportional counter for KSTAR. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2016; 87:11E314. [PMID: 27910480 DOI: 10.1063/1.4960491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The inconsistency of the first experimental results from the X-ray imaging crystal spectrometer for the Korea Superconducting Tokamak Advanced Research device utilizing a multi-wire proportional counter (MWPC) is clarified after improving the photon-count rate of the data acquisition system for the MWPC and ground loop isolator for the whole spectrometer system. The improved MWPC is successfully applied to pure Ohmic plasmas as well as plasmas with high confinement modes.
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Park KH, Lee S, Park JH, Kang SY, Kim HY, Park IH, Park YH, Im YH, Lee HJ, Park S, Lee SI, Jung KH, Kim YS, Seo JH. A randomized, multi-center, open-label, phase III study of once-per-cycle DA-3031, a pegylated G-CSF, in comparison with daily filgrastim in patients receiving TAC chemotherapy for breast cancer. Support Care Cancer 2016; 25:505-511. [PMID: 27709313 DOI: 10.1007/s00520-016-3429-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Accepted: 09/26/2016] [Indexed: 11/28/2022]
Abstract
PURPOSE This multi-center, randomized, phase III study was conducted to demonstrate the non-inferiority of DA-3031 compared with daily filgrastim in patients during the first cycle of chemotherapy for breast cancer in terms of the duration of severe neutropenia (DSN). METHODS Seventy-four patients with breast cancer who were receiving combination chemotherapy with docetaxel, doxorubicin, and cyclophosphamide (TAC) were enrolled. All participants were randomized to receive either daily subcutaneous injections of filgrastim 100 μg/m2/day for up to 10 days or a single subcutaneous injection of DA-3031 at fixed doses of 6 mg on day 2 of each chemotherapy cycle. RESULTS The mean duration of grade 4 (G4) neutropenia in cycle 1 was 2.08 ± 0.85 days for the filgrastim group and 2.28 ± 1.14 days for the DA-3031 group. The difference between groups was 0.2 ± 1.10 days (95 % confidence interval (CI) = -0.26, 0.66), which supported non-inferiority. No statistically significant differences were observed in nadir absolute neutrophil count (ANC) (154.34/mm3 and 161.75/mm3 for the filgrastim and DA-3031 groups, respectively; P = 0.8414) or in time to ANC recovery (10.03 ± 0.75 and 9.83 ± 1.56 days in the filgrastim and DA-3031 groups, respectively; P = 0.0611) during cycle 1. Serious AEs occurred in six (15.8 %) patients receiving filgrastim and in ten (27.8 %) patients receiving DA-3031; however, none was determined to be related to the study drug. CONCLUSIONS DA-3031 and daily filgrastim are similar in regard to DSN and safety in breast cancer patients receiving TAC chemotherapy.
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Tsang PWM, Poon TC, Liu JP, Kim T, Kim YS. Low Complexity Compression and Speed Enhancement for Optical Scanning Holography. Sci Rep 2016; 6:34724. [PMID: 27708410 PMCID: PMC5052601 DOI: 10.1038/srep34724] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 09/14/2016] [Indexed: 11/25/2022] Open
Abstract
In this paper we report a low complexity compression method that is suitable for compact optical scanning holography (OSH) systems with different optical settings. Our proposed method can be divided into 2 major parts. First, an automatic decision maker is applied to select the rows of holographic pixels to be scanned. This process enhances the speed of acquiring a hologram, and also lowers the data rate. Second, each row of down-sampled pixels is converted into a one-bit representation with delta modulation (DM). Existing DM-based hologram compression techniques suffers from the disadvantage that a core parameter, commonly known as the step size, has to be determined in advance. However, the correct value of the step size for compressing each row of hologram is dependent on the dynamic range of the pixels, which could deviate significantly with the object scene, as well as OSH systems with different opical settings. We have overcome this problem by incorporating a dynamic step-size adjustment scheme. The proposed method is applied in the compression of holograms that are acquired with 2 different OSH systems, demonstrating a compression ratio of over two orders of magnitude, while preserving favorable fidelity on the reconstructed images.
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Park SJ, Yeum KJ, Choi B, Kim YS, Joo NS. Positive correlation of serum HDL cholesterol with blood mercury concentration in metabolic syndrome Korean men (analysis of KNANES 2008-2010, 2013). J Endocrinol Invest 2016; 39:1031-8. [PMID: 27107997 DOI: 10.1007/s40618-016-0459-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 03/14/2016] [Indexed: 10/21/2022]
Abstract
PURPOSE High-density lipoprotein cholesterol (HDLC) is anti-inflammatory in the basal state and pro-inflammatory during the acute-phase response. Blood mercury also has an inflammatory property. Therefore, the aim of this study was to investigate the relationship between serum HDLC and blood mercury concentration in relation with metabolic syndrome (MS). METHODS The data of 7616 subjects (3713 men and 3903 women), over 20 years of age, from 2008 to 2013, Korea National Health and Nutrition Examination Survey were selected for cross-sectional analyses. Correlation and regression of serum HDLC and blood mercury were initially done. We compared serum HDLC concentration according to blood mercury quartile after adjustment for relevant variables in subjects with MS. RESULTS Mean blood mercury concentrations is 5.6 and 3.9 μg/dL in men and women, respectively. Blood mercury concentration in MS subjects was positively correlated with serum HDLC concentration, especially in men. In addition, HDLC concentration was significantly higher according to the higher blood mercury quartile. CONCLUSION Serum HDLC was positively associated with blood mercury concentration in MS Korean men. Therefore, elevated blood mercury may be a factor to increase serum HDLC concentration in MS men.
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Lee SH, Mun JY, Kim YS, Chu CH, Na IC, Lee JH, Lee MS, Lee DH, Park KP. Characteristics of Microbial Fuel Cells Using Pig Waste and sPAES Membrane. KOREAN CHEMICAL ENGINEERING RESEARCH 2016. [DOI: 10.9713/kcer.2016.54.4.453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Kang CS, Lee HH, Oh S, Lee SG, Wi HM, Kim YS, Kim HS. Study on the heat flux reconstruction with the infrared thermography for the divertor target plates in the KSTAR tokamak. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2016; 87:083508. [PMID: 27587124 DOI: 10.1063/1.4961030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
An infrared (IR) thermography is the preferred diagnostic that can quantify heat flux by measuring the surface temperature distributions of the divertor plates. The IR thermography is successfully instrumented on Korea Superconducting Tokamak Advanced Research (KSTAR). In this study, finite volume method is considered to solve the heat conduction equations. 1D-, 2D-, and 3D models are developed and compared with various calculation algorithms, such as Duhamel's theorem and THEODOR. These comparisons show good agreement. In order to acquire more efficient and reliable calculation results, we consider two numerical analysis schemes, influence of temperature on thermal properties and image stabilization. Recently, this reconstruction code is successfully applied to the KSTAR IR thermography.
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Byun JI, Lee ST, Moon J, Jung KH, Sunwoo JS, Lim JA, Kim TJ, Shin YW, Lee KJ, Jun JS, Lee HS, Lee WJ, Kim YS, Kim S, Jeon D, Park KI, Jung KY, Kim M, Chu K, Lee SK. Distinct intrathecal interleukin-17/interleukin-6 activation in anti-N-methyl-d-aspartate receptor encephalitis. J Neuroimmunol 2016; 297:141-7. [DOI: 10.1016/j.jneuroim.2016.05.023] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 05/28/2016] [Accepted: 05/31/2016] [Indexed: 12/12/2022]
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Yu SN, Cho OH, Park KH, Jung J, Kim YK, Lee JY, Chong YP, Lee SO, Choi SH, Kim YS, Woo JH, Kim SH. Late paradoxical lymph node enlargement during and after anti-tuberculosis treatment in non-HIV-infected patients. Int J Tuberc Lung Dis 2016; 19:1388-94. [PMID: 26467593 DOI: 10.5588/ijtld.15.0257] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
SETTINGS A tertiary referral centre in South Korea. OBJECTIVE To investigate the incidence, clinical characteristics and outcomes of late paradoxical response (>4 months after the initiation of anti-tuberculosis treatment) during and after anti-tuberculosis treatment in non-human immunodeficiency virus (HIV) infected patients with lymph node tuberculosis (TB). DESIGN We retrospectively reviewed the medical records of non-HIV-infected patients with lymph node TB between 1997 and 2007, and prospectively enrolled patients with newly diagnosed lymph node TB between 2008 and 2013. RESULTS Of 467 patients with confirmed and probable lymph node TB, 83 (18%) displayed a paradoxical response: 57 of these (69%) were classified as early and 26 (31%) as late paradoxical response. Patients with late paradoxical response (median 12 months) received more prolonged anti-tuberculosis treatment than those with early (median 9 months, P < 0.001) or no paradoxical response (median 9 months, P < 0.001). The frequency of post-treatment lymph node enlargement increased progressively from those without any paradoxical response (6%), through those with an early response (12%) to those with a late response (23%). CONCLUSIONS Paradoxical response presents late in about one third of non-HIV-infected patients with lymph node TB who experience a response. Although anti-tuberculosis treatment is commonly prolonged in patients with late paradoxical response, post-treatment lymph node enlargement is more frequent in these patients.
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Ko E, Lee Y, Park N, Cho C, Yim YN, Kim J, Kim YS, Kim D, Shin MK, Hong MC, Bae H. Sophorae radix reduces autoimmune response in NZB/w F1 systemic lupus erythematosus mouse model. Lupus 2016; 16:335-41. [PMID: 17576735 DOI: 10.1177/0961203307078228] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The immunosuppressive effects of Sophorae radix (SR) make this plant an attractive agent for the treatment of autoimmune diseases. The effect of SR on systemic lupus erythematosus (SLE) in the New Zealand Black/White F1 (NZB/w F1) mouse model system was investigated. Three-month-old NZB/w F1 mice were separated into two groups: one treated with SR (1% SR solution by oral administration, daily for 15 weeks) and one with water as a control. Experimental parameters include proteinuria, anti-dsDNA antibody titers, T-cell response and renal histopathological analysis. Results in the SR-treated group showed a significant reduction in proteinuria and anti-dsDNA antibodies either in serum or in glomerular capillaries, along with significant recovery from renal glomerular damage. The lymphocyte population was significantly increased in the SR-treated mice compared with the control group. In the T helper (Th)1/Th2 cytokine secretion profile, interferon-γ in splenocyte culture was significantly reduced in the SR-treated mice, while interleukin-4 secretion was not altered. These results strongly suggest SR therapy corrects the deviated Th1/Th2 balance, thereby alleviating SLE-like symptoms in the NZB/w F1 mice. Therefore, SR may be useful in the clinical treatment of SLE. Lupus (2007) 16, 335—341.
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MESH Headings
- Animals
- Antibodies, Antinuclear/blood
- Antibodies, Antinuclear/immunology
- Autoimmunity/immunology
- Blood Cell Count
- Chromatography, High Pressure Liquid
- Disease Models, Animal
- Drugs, Chinese Herbal/therapeutic use
- Drugs, Chinese Herbal/toxicity
- Female
- Interferon-gamma/biosynthesis
- Interleukin-4/biosynthesis
- Kidney/drug effects
- Lupus Erythematosus, Systemic/drug therapy
- Lupus Erythematosus, Systemic/immunology
- Lupus Erythematosus, Systemic/pathology
- Mice
- Mice, Inbred NZB
- Spleen/metabolism
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Kim YS, Kwon OR, Heo DB, Tak DH, Koh YG, Lee SW. Response to Letter to the Editor: the use of the term "mesenchymal stem cells" in our article is appropriate based on our laboratory study and the review of the literatures. Osteoarthritis Cartilage 2016; 24:1304-5. [PMID: 26946246 DOI: 10.1016/j.joca.2016.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Accepted: 02/24/2016] [Indexed: 02/02/2023]
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89
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Kim BS, Cho Y, Lee H, Joo DJ, Huh KH, Kim MS, Kim YS. Comparative Proteomic Analysis of Rapamycin Versus Cyclosporine Combination Treatment in Mouse Podocytes. Transplant Proc 2016; 48:1297-301. [PMID: 27320608 DOI: 10.1016/j.transproceed.2016.01.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 01/13/2016] [Accepted: 01/21/2016] [Indexed: 11/18/2022]
Abstract
BACKGROUND The mechanism of podocyte injury observed with the use of rapamycin (RPM) remains unclear. The conversion from calcineurin inhibitors (CNIs) to RPM in kidney transplant recipients has been associated with a higher incidence of proteinuria and renal injury. In this study, we performed proteomic analyses to investigate the alteration of protein expression in mouse podocytes treated with RPM in comparison with CNI/RPM combination. METHODS Immortalized mouse podocytes were treated with 20 nmol/L RPM or 20 nmol/L RPM + 1 μg/mL cyclosporine. Podocyte proteins were separated by 2-dimensional polyacrylamide gel electrophoresis (2DE) and identified by matrix-assisted laser desorption time-of-flight (MALDI-TOF) mass spectrometry and peptide fingerprinting. Selected proteins were analyzed by means of Western blot assay. RESULTS We identified 36 differently expressed proteins after isolated RPM or CNI/RPM combination treatment in cultured mouse podocytes. There are 3 distinct patterns of protein expression: (1) potentiated down- or upregulation of proteins by CNI/RPM treatment compared with isolated RPM treatment (n = 4); (2) partial offset of down-regulation by CNI/RPM in comparison with RPM treatment (n = 25); (3) no difference in down-regulation between RPM and CNI/RPM treatment (n = 5). We found a significant interplay between RPM and CNI on the expression of the selected proteins in mouse podocytes. This might explain the higher incidence of proteinuria by CNI/RPM combination in clinical settings. CONCLUSIONS Further study is required to elucidate the target protein associated with RPM-induced podocyte injury.
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Kim YW, Hong JM, Park DG, Choi JW, Kang DH, Kim YS, Zaidat OO, Demchuk AM, Hwang YH, Lee JS. Effect of Intracranial Atherosclerotic Disease on Endovascular Treatment for Patients with Acute Vertebrobasilar Occlusion. AJNR Am J Neuroradiol 2016; 37:2072-2078. [PMID: 27313131 DOI: 10.3174/ajnr.a4844] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Accepted: 04/24/2016] [Indexed: 02/01/2023]
Abstract
BACKGROUND AND PURPOSE Although intracranial atherosclerotic disease is often encountered during endovascular treatment for acute vertebrobasilar occlusions, its clinical implication is not well-known. We aimed to evaluate whether intracranial atherosclerotic disease influences the clinical outcomes following endovascular treatment of acute vertebrobasilar occlusive stroke. MATERIALS AND METHODS Fifty-one patients with acute vertebrobasilar occlusive stroke were included. The onset-to-groin puncture time was ≤12 hours, and aspiration- or stent-based thrombectomy was used as the primary treatment method. Following primary endovascular treatment, intracranial atherosclerotic disease (IAD group) was angiographically diagnosed when a fixed focal stenosis was observed at the occlusion site, whereas embolism (embolic group) was diagnosed if no stenosis was observed. Clinical and treatment variables were compared in both groups, and IAD was evaluated as a prognostic factor for clinical outcomes. RESULTS The baseline NIHSS score tended to be lower (14 versus 22, P = .097) in the IAD group (n = 19) than in the embolic group (n = 32). The procedural time was longer in the IAD group (96 versus 61 minutes, P = .002), despite similar rates of TICI 2b-3 (89.5% versus 87.5%, P = 1.000). The NIHSS score at 7 days was higher (21 versus 8, P = .060) and poor outcomes (mRS 4-6 at 3 months) were more frequent in the IAD group (73.7% versus 43.8%, P = .038). IAD (odds ratio, 5.469; 95% CI, 1.09-27.58; P = .040) was independently associated with poor outcomes. CONCLUSIONS An arterial occlusion related to IAD was associated with a longer procedural time and poorer clinical outcome. Further studies are warranted to elucidate the appropriate endovascular strategy.
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Kim JE, Shin JS, Moon JH, Hong SW, Jung DJ, Kim JH, Hwang IY, Shin YJ, Gong EY, Lee DH, Kim SM, Lee EY, Kim YS, Kim D, Hur D, Kim TW, Kim KP, Jin DH, Lee WJ. Foxp3 is a key downstream regulator of p53-mediated cellular senescence. Oncogene 2016; 36:219-230. [DOI: 10.1038/onc.2016.193] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 04/18/2016] [Accepted: 04/26/2016] [Indexed: 11/09/2022]
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92
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Jeong HS, Lee J, Lim BJ, Kwon HJ, Kim YS, Kim BS, Huh KH, Kim SI, Kim MS, Jeong HJ. Concurrent Post-Transplantation Diabetes Mellitus in Renal Allograft Recipients With Immunoglobulin A Nephropathy. Transplant Proc 2016; 48:887-9. [PMID: 27234759 DOI: 10.1016/j.transproceed.2015.11.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 11/06/2015] [Indexed: 11/27/2022]
Abstract
BACKGROUND The prevalence of post-transplantation immunoglobulin A nephropathy (PTIgAN) and diabetes mellitus (PTDM) increases with time after transplantation, and recognition and management of these conditions is becoming more important in renal allograft recipients as graft survival increases. METHODS We explored the influence of concurrent PTDM on renal allograft histology and function in 111 cases with PTIgAN diagnosed from 2000 to 2010 at our institution. RESULTS Sixteen patients (14.4%) had PTDM at the time of diagnosis of PTIgAN, which increased to 28 patients (25.2%) at the last follow-up (10.4 years after transplantation). Donor ages were younger in PTIgAN patients with concurrent PTDM. However, other clinical and demographic data were not significantly different between PTIgAN patients with and without PTDM. Histologically, Banff "mm" scores were higher and "M1" of the Oxford classification was more frequent in PTIgAN patients with concurrent PTDM than in patients without PTDM, but the difference did not reach statistical significance. Serum creatinine levels and proteinuria at the time of biopsy and overall graft survival did not vary according to the presence of PTDM both at biopsy and at the last follow-up. CONCLUSIONS Concurrent PTDM does not significantly influence graft function or outcome for 10 years after transplantation in PTIgAN patients.
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93
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Jung J, Song EH, Park SY, Lee SR, Park SJ, Sung H, Kim MN, Kim SH, Lee SO, Choi SH, Woo JH, Kim YS, Chong YP. Emergence of Panton-Valentine leucocidin-positive ST8-methicillin-resistant Staphylococcus aureus (USA300 clone) in Korea causing healthcare-associated and hospital-acquired bacteraemia. Eur J Clin Microbiol Infect Dis 2016; 35:1323-9. [PMID: 27209287 DOI: 10.1007/s10096-016-2668-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Accepted: 05/03/2016] [Indexed: 11/24/2022]
Abstract
Panton-Valentine leucocidin (PVL)-positive sequence type (ST)8-MRSA-SCCmec IVa (USA300) is the epidemic strain of community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) in North America. USA300 is extremely rare in South Korea, and PVL-negative ST72 SCCmec type IVc is the predominant CA-MRSA clone. In a multicentre, prospective cohort study of S. aureus bacteraemia, we identified PVL-positive ST8-MRSA isolates by performing multilocus sequence typing and PCR for PVL. We analyzed the clinical characteristics of patients with PVL-positive ST8-MRSA bacteraemia, and performed SCCmec, spa, and agr typing, PCR for arginine catabolic mobile element (ACME), virulence gene profiling, and pulsed-field gel electrophoresis (PFGE). Among a total of 818 MRSA isolates, we identified ten isolates of PVL-positive ST8-MRSA (USA300) (3 from Hospital D, 4 from Hospital G, and 3 from Hospital A), all of which involved exclusively healthcare-associated (5 isolates) and hospital-acquired bacteraemia (5 isolates). This strain accounted for 8~10 % of the hospital-acquired MRSA bacteraemia in Hospitals D and G. Bacteraemia of unknown origin was the most common type of infection followed by pneumonia. All the isolates were SCCmec type IVa, spa type t008, and agr group I. Eight of the isolates harboured ACME. In a PFGE analysis, four isolates were identical to the USA300 control strain, five differed by a single band, and the remaining one differed by two bands. All the isolates were pulsed-field type USA300. This is the first report of healthcare-associated and hospital-acquired bacteraemia caused by USA300 in South Korea. USA300 seems to be an emerging hospital clone in this country.
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Ahn SH, Lim YS, Lee KS, Paik SW, Lee YJ, Jeong SH, Kim JH, Yoon SK, Yim HJ, Tak WY, Han SY, Yang JC, Mo H, Mathias A, Han L, Knox SJ, Brainard DM, Kim YJ, Byun KS, Kim YS, Heo J, Han KH. A phase 3b study of sofosbuvir plus ribavirin in treatment-naive and treatment-experienced Korean patients chronically infected with genotype 2 hepatitis C virus. J Viral Hepat 2016; 23:358-65. [PMID: 26864153 DOI: 10.1111/jvh.12499] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 11/05/2015] [Indexed: 01/04/2023]
Abstract
In Korea, patients with chronic hepatitis C virus (HCV) infection are typically treated with pegylated interferon-alpha plus ribavirin, but interferons are contraindicated in many patients and are often poorly tolerated, particularly by the elderly and those with advanced liver disease. No interferon-free treatment regimens are approved in Korea. Sofosbuvir is an oral nucleotide analog inhibitor of the HCV nonstructural 5B RNA polymerase. It is approved in the USA, European Union and Japan for treating a number of HCV genotypes, including genotype 2. Genotype 2 has a seroprevalence of 38-46% in Korea. This single-arm, phase 3b study (NCT02021643) examined the efficacy and safety of sofosbuvir plus ribavirin (12-week duration) in chronic genotype 2 HCV-infected treatment-naive and treatment-experienced Korean patients with and without cirrhosis. The proportion of patients with sustained virologic response 12 weeks after treatment discontinuation (SVR12) was 97% (125/129), with 96% (101/105) of treatment-naive and 100% (24/24) of treatment-experienced patients achieving SVR12. Two patients experienced virologic failure (n = 1, on-treatment failure; n = 1, relapse). No patient discontinued study treatment due to an adverse event (AE). The most common treatment-emergent AEs were headache (18%, 23/129) and pruritus (15%, 19/129). Few patients had grade 3 AEs (5%, 6/129) or grade 3 laboratory abnormalities (12%, 15/129). No grade 4 AE was reported. These data suggest that 12 weeks of treatment with the all-oral, interferon-free regimen of sofosbuvir plus ribavirin is effective and well tolerated in Korean patients with chronic genotype 2 HCV infection.
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Lee SH, Kim YS, Chu CH, Na IC, Lee JH, Park KP. Effect of Fabrication Method of Cathode on OCV in Enzyme Fuel Cells. KOREAN CHEMICAL ENGINEERING RESEARCH 2016. [DOI: 10.9713/kcer.2016.54.2.171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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96
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Kim YS, Lee JW, Kim J, Lee SB, Yu J, Ko BS, Kim HJ, Son BH, Ahn SH. Abstract P1-11-03: Patient reporting pain intensity immediately after surgery can be associated with underlying depression in women with breast cancer. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p1-11-03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Objective
The aims of this study were to determine the prevalence of severe, definite depression symptoms, as measured using the Center for Epidemiological Studies Depression Scale (CES-D), and the association between high CES-D scores (i.e., ≥25) and sociodemographic and perioperative factors during perioperative period.
Methods
Among 1690 consecutive breast cancer patients who were admitted for definitive breast surgery during the study period, 1499 patients were included in this study. Patients with a past medical history of psychiatric medication or support, a plan for elective surgery due to locoregional recurrence or any metastatic disease were excluded. The CES-D score was checked 1 day before definitive surgeries. The sociodemographic data and perioperative data were analyzed.
Results
The mean CES-D score was 18.5, with 24.1% (362/1499) and 56.7% (850/1499) having high CES-D scores of ≥25 and ≥16, respectively. Multivariate analysis revealed that the number of family members with any malignancy (≥2 vs 0), sedative medication (yes vs no) and postoperative numeric rating scale (NRS) scores (persistent, severe pain vs stably mild pain) were significant associated factors for severe, definite depression symptoms [CES-D score of ≥25: adjusted odds ratio (OR)=1.56, 95% confidence interval (CI)=1.10–2.21, P=0.013; adjusted OR=1.65, 95% CI=1.00–2.71, P=0.048; and adjusted OR=2.14, 95% CI=1.15–3.95, P=0.016, respectively].
Conclusion
Depression may increase the intensity of postoperative acute pain. Self-reporting of persistent postoperative pain intensity is potentially useful in detecting hidden depression symptoms in breast cancer patients during the perioperative period.
Citation Format: Kim YS, Lee JW, Kim J, Lee SB, Yu J, Ko BS, Kim HJ, Son BH, Ahn SH. Patient reporting pain intensity immediately after surgery can be associated with underlying depression in women with breast cancer. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P1-11-03.
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Kim YS, Choi YJ, Lee SW, Kwon OR, Suh DS, Heo DB, Koh YG. Assessment of clinical and MRI outcomes after mesenchymal stem cell implantation in patients with knee osteoarthritis: a prospective study. Osteoarthritis Cartilage 2016; 24:237-45. [PMID: 26318655 DOI: 10.1016/j.joca.2015.08.009] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 07/14/2015] [Accepted: 08/18/2015] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Cartilage regenerative procedures using the cell-based tissue engineering approach involving mesenchymal stem cells (MSCs) have been receiving increased interest because of their potential for altering the progression of osteoarthritis (OA) by repairing cartilage lesions. The aim of this study was to investigate the clinical and magnetic resonance imaging (MRI) outcomes of MSC implantation in OA knees and to determine the association between clinical and MRI outcomes. DESIGN Twenty patients (24 knees) who underwent arthroscopic MSC implantation for cartilage lesions in their OA knees were evaluated at 2 years after surgery. Clinical outcomes were evaluated according to the International Knee Documentation Committee (IKDC) score and the Tegner activity scale, and cartilage repair was assessed according to the MRI Osteoarthritis Knee Score (MOAKS) and Magnetic Resonance Observation of Cartilage Repair Tissue (MOCART) score. RESULTS The clinical outcomes significantly improved (P < 0.001 for both). The cartilage lesion grades (as described in MOAKS [grades for size of cartilage-loss area and percentage of full-thickness cartilage loss]) at follow-up MRI were significantly better than the preoperative values (P < 0.001 for both). The clinical outcomes at final follow-up were significantly correlated with the MOAKS and MOCART score at follow-up MRI (P < 0.05 for all). CONCLUSIONS Considering the encouraging clinical and MRI outcomes obtained and the significant correlations noted between the clinical and MRI outcomes, MSC implantation seems to be useful for repairing cartilage lesions in OA knees. However, a larger sample size and long-term studies are needed to confirm our findings.
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Lee SH, Hwang BC, Lee HR, Kim YS, Chu CH, Na IC, Park KP. Effect of Fabrication Method of Anode on Performance in Enzyme Fuel Cells. KOREAN CHEMICAL ENGINEERING RESEARCH 2015. [DOI: 10.9713/kcer.2015.53.6.667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Lee JM, Kim CY, Shin JH, Lee SH, Song JH, Park MS, Kim YS, Kim SK, Chang J, Chung KS. EPH-ephrin signaling in hyperoxia induced lunginjury. Intensive Care Med Exp 2015. [PMCID: PMC4798300 DOI: 10.1186/2197-425x-3-s1-a563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Sibley A, Han KH, Abourached A, Lesmana LA, Makara M, Jafri W, Salupere R, Assiri AM, Goldis A, Abaalkhail F, Abbas Z, Abdou A, Al Braiki F, Al Hosani F, Al Jaberi K, Al Khatry M, Al Mulla MA, Al Quraishi H, Al Rifai A, Al Serkal Y, Alam A, Alavian SM, Alashgar HI, Alawadhi S, Al-Dabal L, Aldins P, Alfaleh FZ, Alghamdi AS, Al-Hakeem R, Aljumah AA, Almessabi A, Alqutub AN, Alswat KA, Altraif I, Alzaabi M, Andrea N, Babatin MA, Baqir A, Barakat MT, Bergmann OM, Bizri AR, Blach S, Chaudhry A, Choi MS, Diab T, Djauzi S, El Hassan ES, El Khoury S, Estes C, Fakhry S, Farooqi JI, Fridjonsdottir H, Gani RA, Ghafoor Khan A, Gheorghe L, Gottfredsson M, Gregorcic S, Gunter J, Hajarizadeh B, Hamid S, Hasan I, Hashim A, Horvath G, Hunyady B, Husni R, Jeruma A, Jonasson JG, Karlsdottir B, Kim DY, Kim YS, Koutoubi Z, Liakina V, Lim YS, Löve A, Maimets M, Malekzadeh R, Matičič M, Memon MS, Merat S, Mokhbat JE, Mourad FH, Muljono DH, Nawaz A, Nugrahini N, Olafsson S, Priohutomo S, Qureshi H, Rassam P, Razavi H, Razavi-Shearer D, Razavi-Shearer K, Rozentale B, Sadik M, Saeed K, Salamat A, Sanai FM, Sanityoso Sulaiman A, Sayegh RA, Sharara AI, Siddiq M, Siddiqui AM, Sigmundsdottir G, Sigurdardottir B, Speiciene D, Sulaiman A, Sultan MA, Taha M, Tanaka J, Tarifi H, Tayyab G, Tolmane I, Ud Din M, Umar M, Valantinas J, Videčnik-Zorman J, Yaghi C, Yunihastuti E, Yusuf MA, Zuberi BF, Schmelzer JD. The present and future disease burden of hepatitis C virus infections with today's treatment paradigm - volume 3. J Viral Hepat 2015; 22 Suppl 4:21-41. [PMID: 26513446 DOI: 10.1111/jvh.12476] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 09/06/2015] [Indexed: 02/05/2023]
Abstract
The total number, morbidity and mortality attributed to viraemic hepatitis C virus (HCV) infections change over time making it difficult to compare reported estimates from different years. Models were developed for 15 countries to quantify and characterize the viraemic population and forecast the changes in the infected population and the corresponding disease burden from 2014 to 2030. With the exception of Iceland, Iran, Latvia and Pakistan, the total number of viraemic HCV infections is expected to decline from 2014 to 2030, but the associated morbidity and mortality are expected to increase in all countries except for Japan and South Korea. In the latter two countries, mortality due to an ageing population will drive down prevalence, morbidity and mortality. On the other hand, both countries have already experienced a rapid increase in HCV-related mortality and morbidity. HCV-related morbidity and mortality are projected to increase between 2014 and 2030 in all other countries as result of an ageing HCV-infected population. Thus, although the total number of HCV countries is expected to decline in most countries studied, the associated disease burden is expected to increase. The current treatment paradigm is inadequate if large reductions in HCV-related morbidity and mortality are to be achieved.
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