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Cooling L, Sankar A, Mody R, Yanik G, Bonifant C, Choi SW. A severe umbilical cord stem cell infusion reaction due to dextran in an atopic pediatric patient. Bone Marrow Transplant 2017; 52:1051-1053. [PMID: 28263287 DOI: 10.1038/bmt.2017.33] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Raj M, Choi SW, Platt J. A qualitative exploration of the informed consent process in hematopoietic cell transplantation clinical research and opportunities for improvement. Bone Marrow Transplant 2016; 52:292-298. [PMID: 27748736 DOI: 10.1038/bmt.2016.252] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 07/29/2016] [Accepted: 08/06/2016] [Indexed: 11/09/2022]
Abstract
Informed consent (IC) struggles to meet the ethical principles it strives to embody in the context of hematopoietic cell transplantation (HCT). Patients often participate in multiple clinical trials making it difficult to effectively inform the participants and fulfill complex regulations. The recent Notice of Proposed Rule Making would make major changes to federal requirements, providing a timely opportunity to evaluate existing practice. Twenty health care professionals within a Midwest Academic Medical Center involved in obtaining IC in the HCT clinic or involved in patient care during or after the IC process were interviewed to understand: (1) how they approached the IC process; (2) how they described a 'successful' IC process; and (3) opportunities for innovation. Narrative and discourse analyses of interviews indicate that providers understand IC to be a collaborative process requiring engagement and participation of providers, patients and caregivers. 'Markers of success' were identified including cognitive, affective and procedural markers focusing on patient understanding and comfort with the decision to participate. Opportunities for innovating the process included use of decision aids and tablet-based technology, and better use of patient portals. Our findings suggest specific interventions for the IC process that could support the process of consent for providers, patients and caregivers.
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Hong IH, Choi JY, Kim AY, Lee EM, Kim JH, Park JH, Choi SW, Jeong KS. Anti-rheumatoid arthritic effect of fermented Adlay and Achyranthes japonica Nakai on collagen-induced arthritis in mice. FOOD AGR IMMUNOL 2016. [DOI: 10.1080/09540105.2016.1202207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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Jang CB, Choi SW. Simulation and Damage Analysis of an Accidental Jet Fire in a High-Pressure Compressed Pump Shelter. Saf Health Work 2016; 8:42-48. [PMID: 28344840 PMCID: PMC5355529 DOI: 10.1016/j.shaw.2016.06.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 05/25/2016] [Accepted: 06/22/2016] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND As one of the most frequently occurring accidents in a chemical plant, a fire accident may occur at any place where transfer or handling of combustible materials is routinely performed. METHODS In particular, a jet fire incident in a chemical plant operated under high pressure may bring severe damage. To review this event numerically, Computational Fluid Dynamics methodology was used to simulate a jet fire at a pipe of a compressor under high pressure. RESULTS For jet fire simulation, the Kemeleon FireEx Code was used, and results of this simulation showed that a structure and installations located within the shelter of a compressor received serious damage. CONCLUSION The results confirmed that a jet fire may create a domino effect that could cause an accident aside from the secondary chemical accident.
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Choi SW, Lam DM, Irwin MG. Ghost in the machine. Hong Kong Med J 2016; 22:292-3. [PMID: 27305698 DOI: 10.12809/hkmj154695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Choi SW, Cheung CW. Don't judge a book by its cover, don't judge a study by its abstract. Common statistical errors seen in medical papers. Anaesthesia 2016; 71:843-5. [PMID: 27156782 DOI: 10.1111/anae.13506] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Platt J, Thiel DB, Kardia SLR, Choi SW. Innovating consent for pediatric HCT patients. Bone Marrow Transplant 2016; 51:885-8. [PMID: 26926228 DOI: 10.1038/bmt.2016.10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Choi SW, Tran DHD. Calculating sample size. Alpha, Beta, Mu and Sigma--it's all Greek. Anaesthesia 2016; 71:462-4. [PMID: 26749144 DOI: 10.1111/anae.13369] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Chughtai K, Song Y, Zhang P, Derstine B, Gatza E, Friedman J, Hully L, Inglis C, Goldstein S, Magenau J, Pawarode A, Reddy P, Riwes M, Yanik G, Wang SC, Choi SW. Analytic morphomics: a novel CT imaging approach to quantify adipose tissue and muscle composition in allogeneic hematopoietic cell transplantation. Bone Marrow Transplant 2015; 51:446-50. [DOI: 10.1038/bmt.2015.267] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Choi SW, Lam DMH, Irwin MG. The dark side of the moon. Hong Kong Med J 2015; 21:476-7. [PMID: 26493081 DOI: 10.12809/hkmj154631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Shin HS, Bae MJ, Jung SY, See HJ, Kim YT, Do JR, Back SY, Choi SW, Shon DH. Enhancing Effect of Trachelogenin from Trachelospermi caulis Extract on Intestinal Barrier Function. Biol Pharm Bull 2015; 38:1707-13. [PMID: 26268064 DOI: 10.1248/bpb.b15-00332] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Trachelospermi caulis is used widely as an herbal medicine in oriental countries to attenuate fever and pain. We wished to reveal the novel function of this herb and its active component on barrier function in intestinal epithelial cells. Monolayers of intestinal epithelial cells (Caco-2) were used to evaluate the transepithelial electrical resistance (TEER) and quantity of permeated ovalbumin (OVA) as indices of barrier function. T. caulis increased TEER values on cell monolayers and decreased OVA permeation across cell monolayers. To ascertain the active component of T. caulis, the extract was isolated to five fractions, and the effect of each of these fractions on intestinal barrier function examined. Chloroform and ethyl acetate fractions showed increased TEER values and decreased OVA flux. Chloroform and ethyl acetate fractions contained mainly trachelogenin and its glycoside, tracheloside. Trachelogenin increased TEER values and decreased OVA flux by enhancing the tight-junction protein occludin (but not tracheloside) in Caco-2 monolayers. These findings demonstrated that trachelogenin, an active component of T. caulis, might help to attenuate food allergy or inflammatory bowel disease through inhibition of allergen permeation or enhancement of the intestinal barrier.
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Choi SW, Lam DMH. Please please me. Hong Kong Med J 2015; 22:85-6. [DOI: 10.12809/hkmj154738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Oh JS, Youm YS, Cho SD, Choi SW, Cho YJ. The expression of vascular endothelial growth factor and Syndecan-4 in cartilage from osteoarthritic knees. Bone Joint J 2014; 96-B:1319-24. [PMID: 25274915 DOI: 10.1302/0301-620x.96b10.33812] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Previous studies support the important role of vascular endothelial growth factor (VEGF) and syndecan-4 in the pathogenesis of osteoarthritis (OA). Both VEGF and syndecan-4 are expressed by chondrocytes and both are involved in the regulation of matrix metalloproteinase-3, resulting in the activation of aggrecanase II (ADAMTS-5), which is essential in the pathogenesis of OA. However, the relationship between VEGF and syndecan-4 has not been established. As a pilot study, we assayed the expression of VEGF and syndecan-4 in cartilage samples and cultured chondrocytes from osteoarthritic knee joints and analysed the relationship between these two factors. Specimens were collected from 21 female patients (29 knees) who underwent total knee replacement due to severe medial OA of the knee (Kellgren-Lawrence grade 4). Articular cartilage samples, obtained from bone and cartilage excised during surgery, were analysed and used for chondrocyte culture. We found that the levels of expression of VEGF and syndecan-4 mRNA did not differ significantly between medial femoral cartilage with severe degenerative changes and lateral femoral cartilage that appeared grossly normal (p = 0.443 and 0.622, respectively). Likewise, the levels of expression of VEGF and syndecan-4 mRNA were similar in cultured chondrocytes from medial and lateral femoral cartilage. The levels of expression of VEGF and syndecan-4 mRNAs were significantly and positively correlated in cartilage explant (r = 0.601, p = 0.003) but not in cultured chondrocytes. These results suggest that there is a close relationship between VEGF and syndecan-4 in the cartilage of patients with OA. Further studies are needed to determine the exact pathway by which these two factors interact in the pathogenesis of OA.
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Cheung CW, Qiu Q, Ying ACL, Choi SW, Law WL, Irwin MG. The effects of intra-operative dexmedetomidine on postoperative pain, side-effects and recovery in colorectal surgery. Anaesthesia 2014; 69:1214-21. [PMID: 24915800 DOI: 10.1111/anae.12759] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/01/2014] [Indexed: 12/15/2022]
Abstract
In this double-blind, randomised study, 100 patients undergoing open or conventional laparoscopic colorectal surgery received an intra-operative loading dose of dexmedetomidine 1 μg.kg(-1) followed by an infusion of 0.5 μg.kg(-1) .h(-1) , or a bolus and infusion of saline 0.9% of equivalent volume. Forty-six patients in the dexmedetomidine group and 50 in the saline group completed the study. The area under the curve of numerical rating scores for pain at rest for 1-48 h postoperatively was significantly lower in the patients receiving dexmedetomidine (p = 0.041). There was no difference in morphine consumption, duration of recovery ward or hospital stay. From the data obtained in this study, we calculated a number needed to treat for effective pain relief of 4. Intra-operative dexmedetomidine in colorectal surgery resulted in a reduction in resting pain scores, but there was no morphine-sparing effect or improvement in patients' recovery outcome measures.
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Choi SW, Moon EK, Park JY, Jung KW, Oh CM, Kong HJ, Won YJ. Trends in the incidence of and survival rates for oral cavity cancer in the Korean population. Oral Dis 2014; 20:773-9. [PMID: 24735459 DOI: 10.1111/odi.12251] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Revised: 03/26/2014] [Accepted: 03/26/2014] [Indexed: 11/29/2022]
Abstract
OBJECTIVE This study assessed trends in the incidence of and survival rates for oral cavity cancer in the Korean population. MATERIALS AND METHODS Data from the Korea Central Cancer Registry were extracted for 10,282 patients diagnosed with oral cavity cancer (C01-C06) between 1999 and 2010 to evaluate the age-standardised incidence rate, annual percentage change (APC) and 5-year relative survival rate (RSR) according to gender and age. RESULTS In males, the incidence rate slightly decreased [APC of -0.2% (P = 0.6427)]; in females, the incidence rate increased [APC of 3.1% (P < 0.05)]. In males and females, the incidence of oral tongue cancer (C02) significantly increased [APC of 2.2% and 4.1%, respectively (P < 0.05)]. This increase in oral tongue cancer incidence was most prominent in the younger age group (<40 years, APC = 6.1%, P < 0.05). The incidence of buccal cheek cancer increased only among males [APC of 4.8% (P < 0.05)]. The 5-year RSR improved from 42.7% (1993-1995) to 59.5% (2006-2010), corresponding to an increase of 16.8% from 1993 to 2010 (P < 0.05). CONCLUSION The incidence of oral cavity cancer in females increased, whereas it stabilised or decreased in males. However, the incidence of oral tongue cancer increased in both males and females, especially in the younger age group.
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Kim EO, Kwon TK, Choi SW. Diferuloylputrescine, a Predominant Phenolic Amide in Corn Bran, Potently Induces Apoptosis in Human Leukemia U937 Cells. J Med Food 2014; 17:519-26. [DOI: 10.1089/jmf.2013.2913] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Baek SJ, Nam GE, Han KD, Choi SW, Jung SW, Bok AR, Kim YH, Lee KS, Han BD, Kim DH. Sarcopenia and sarcopenic obesity and their association with dyslipidemia in Korean elderly men: the 2008-2010 Korea National Health and Nutrition Examination Survey. J Endocrinol Invest 2014; 37:247-60. [PMID: 24615361 DOI: 10.1007/s40618-013-0011-3] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2013] [Accepted: 11/17/2013] [Indexed: 12/19/2022]
Abstract
BACKGROUND Recently, aging has been shown to be associated with sarcopenic obesity (SO), of which decreased muscle mass and increased fat mass are features. Sarcopenia and obesity alone are known to be associated with abnormal lipid metabolism. However, it remains unclear whether SO has greater adverse effects on dyslipidemia than on sarcopenia or obesity alone. AIM We aimed to investigate the association between SO and dyslipidemia in elderly Koreans. SUBJECTS AND METHODS This study was based on data collected during the 2008-2010 Korea National Health and Nutrition Examination Survey. We included 1,466 men and 2,017 women aged 65 years and over. Sarcopenia was indicated in participants with height- or weight-adjusted appendicular skeletal muscle that was 1 standard deviation below the sex-specific mean for the young reference group, and obesity was defined as a body mass index ≥ 25 kg/m(2). Dyslipidemia was defined according to the National Cholesterol Education Program-Adult Treatment Panel III. RESULTS After adjusting for confounding factors, the SO group had a higher risk for dyslipidemia [odds ratio (OR) 2.82 (95 % confidence interval 1.76-4.51)] than the obese group [2.12 (1.11-4.07)] and sarcopenic group [1.46 (1.01-2.11)] (p < 0.001) only in men. Furthermore, the SO group in men had the highest OR for hypercholesterolemia, hypertriglyceridemia, hypo-high-density lipoprotein cholesterolemia, hyper-low-density lipoprotein cholesterolemia, and a high ratio of triglyceride to high-density lipoprotein cholesterol even after further adjustments. CONCLUSIONS In Korean elderly men, SO was associated with an increased risk for dyslipidemia compared with sarcopenia or obesity alone.
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Mo HW, Jung YH, Jeong JS, Choi KH, Choi SW, Park CS, Choi MA, Kim ML, Kim MS. Quality Characteristics of Vinegar Fermented Using Omija (Schizandra chinensis Baillon). ACTA ACUST UNITED AC 2013. [DOI: 10.3746/jkfn.2013.42.3.441] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Oh HJ, Park EJ, Lee SY, Soh JW, Kong IS, Choi SW, Ra JC, Kang SK, Lee BC. Comparison of cell proliferation and epigenetic modification of gene expression patterns in canine foetal fibroblasts and adipose tissue-derived mesenchymal stem cells. Cell Prolif 2012; 45:438-44. [PMID: 22925503 DOI: 10.1111/j.1365-2184.2012.00838.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVES This study compared rate of cell proliferation, viability, cell size, expression patterns of genes related to pluripotency and epigenetic modification between canine foetal fibroblasts (cFF) and canine adipose tissue-derived mesenchymal stem cells (cAd-MSC). MATERIALS AND METHODS Proliferation pattern, cell viability as well as cell size at each passage of cFF and cAd-MSC were measured when cultures reached confluence. In addition, real-time PCR was performed to investigate expression of Dnmt1, HDAC1, OCT4, SOX2, BAX, BCL2 genes with reference to β-actin gene expression as an endogenous control in both cell lines. RESULTS cFF and cAd-MSC differed in number of generations, but not in doubling times, at all passages. Mean cell size of cAd-MSC was significantly smaller than that of cFF. Cell viability was significantly lower in cFFs and apoptotic level was significantly lower in cAd-MSC compared to passage-matched cFF. In the expression of genes related to pluripotency and epigenetic modification, level of HDAC1 in cAd-MSC was significantly higher than in cFF, but expression of Dnmt1 did not differ between the two groups. OCT4 and SOX2 were significantly more highly expressed in cAd-MSC compared to cFF. CONCLUSIONS cAd-MSC have higher stem-cell potential than cFF in terms of proliferation patterns, epigenetic modification and pluripotency, thus cAd-MSC could be more appropriate than cFF as donors of nuclei in somatic cell nuclear transfer for transgenesis.
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Lee SG, Lee EJ, Park WD, Kim JB, Kim EO, Choi SW. Anti-inflammatory and anti-osteoarthritis effects of fermented Achyranthes japonica Nakai. JOURNAL OF ETHNOPHARMACOLOGY 2012; 142:634-641. [PMID: 22668504 DOI: 10.1016/j.jep.2012.05.020] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Revised: 04/23/2012] [Accepted: 05/11/2012] [Indexed: 06/01/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Achyranthyes japonica Nakai (AJN) has been traditionally used to control pain and improve dysfunction in osteoarthritis (OA) patients. AIM OF THE STUDY The objectives of the present study were to investigate anti-inflammatory and anti-osteoarthritis activities of fermented AJN (FAJN). MATERIALS AND METHODS Anti-inflammatory activity of non-fermented AJN (NFAJN) and FAJN was evaluated by in vitro assay using LPS-induced RAW 264.7 cells. In addition, their cartilage protective effects were also determined in vitro assay using SW1353 cell and in vivo model system using collagenase-induced arthritis (CIA) in rabbits. Moreover, we isolated and identified 20-hydroxyecdysone (20-HES) as a marker component in FAJN. RESULT FAJN showed stronger anti-inflammatory activity than NFAJN through inhibiting production of NO and PGE2 in LPS-induced RAW 264.7, and lowering levels of MMP-3 release in SW1353 cells treated with TNF-a. FAJN contained higher levels of 20-HES, as a marker component, than AJN. FAJN ameliorates the progress of OA by inhibiting local inflammation. It does this by regulating levels of TNF-a and IL-4, and protecting articular cartilage by preventing destruction of proteoglycan, collagens, and also preventing injury to chondrocytes. CONCLUSION Therefore, FAJN is a potential therapeutic agent for reduction of cartilage damage that occurs in OA.
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Lee MH, Choi SW, Kim EJ. Differential Anti-Carcinogenic Effect of Mountain Cultivated Ginseng and Ginseng on Mouse Skin Carcinogenesis. ACTA ACUST UNITED AC 2012. [DOI: 10.3746/jkfn.2012.41.4.462] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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