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Lee KS, Park B, Kim JH, Kim HG, Seo JT, Lee JG, Jang Y, Choo MS. A randomised, double-blind, parallel design, multi-institutional, non-inferiority phase IV trial of imidafenacin versus fesoterodine for overactive bladder. Int J Clin Pract 2013; 67:1317-26. [PMID: 24246210 DOI: 10.1111/ijcp.12272] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 07/10/2013] [Accepted: 07/29/2013] [Indexed: 02/03/2023] Open
Abstract
AIMS Our objective was to compare the efficacy and safety of imidafenacin over fesoterodine in patients with overactive bladder (OAB). METHODS This study is a randomised, double-blind, parallel-group, fesoterodine-controlled study in patients with continuous OAB symptoms for ≥ 3 months, daily mean voiding frequency (DMVF) ≥ 8, and daily mean urgency or urgency incontinence frequency ≥ 2. A twice-daily 0.1 mg imidafenacin with placebo, or once-daily 4 mg fesoterodine with placebo were administered for 12 weeks. The primary efficacy end-point was the difference in DMVF at 12 weeks. The secondary efficacy end-points were differences in daily mean: (i) voiding frequency at 4 and 8 weeks; (ii) urgency frequency; (iii) urgency incontinence frequency; (iv) incontinence frequency; (v) nocturia frequency; and (vi) quality of life score. The variables for safety analysis were adverse events, vital signs, residual urine volume and clinical laboratory tests. An efficacy analysis was conducted in per-protocol patients and the safety analysis was conducted in all randomised patients. RESULTS The differences in DMVF at 12 weeks were -3.38 ± 3.63 and -2.45 ± 3.73 in the imidafenacin and fesoterodine groups, respectively, and the difference was not significant between the two groups. Imidafenacin was non-inferior to fesoterodine, and the lower limit of 95% two-sided confidence intervals was -0.53. The other six secondary end-points and variables for safety analysis showed no difference between the two groups. CONCLUSIONS Imidafenacin was non-inferior to fesoterodine in terms of efficacy, and showed no significant difference in terms of safety.
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Oh J, Kang SM, Hong N, Youn JC, Park S, Lee SH, Jang Y, Chung N. Clinical benefit of spironolactone is preserved only in low BUN group in acute heart failure patients with severe renal dysfunction: Data from the Korean Heart Failure (KorHF) registry. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p3303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Won H, Ko YG, Shin DH, Kim JS, Kim BK, Choi D, Hong MK, Bae JH, Lim DS, Jang Y. Efficacy of early intensive rosuvastatin therapy in patients with ST-segment elevation myocardial infarction undergoing primary percutaneous coronary intervention: randomized, placebo-controlled. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p2268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Tsai LT, Chen CC, Jang Y, Liao KM. The meridian effect on the cortical magnification factor for visual word form identification. J Vis 2013. [DOI: 10.1167/13.9.582] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Park J, Shin DH, Kim BK, Her AY, Kim YH, Choi HH, Kim JS, Ko YG, Choi D, Jang Y, Hong MK. Relationship between aspirin/clopidogrel resistance and intra-stent thrombi assessed by follow-up optical coherence tomography after drug-eluting stent implantation. Eur Heart J Cardiovasc Imaging 2013; 14:1181-6. [DOI: 10.1093/ehjci/jet088] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Yoo SH, Lee DH, Moon DE, Song HK, Jang Y, Kim JB. Anatomical investigations for appropriate needle positioning for thoracic paravertebral blockade in children. J Int Med Res 2013; 40:2370-80. [PMID: 23321195 DOI: 10.1177/030006051204000636] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE Clinicians hesitate to perform thoracic paravertebral blockade (TPVB) in children due to the potential high risk of adverse effects. No paediatric anatomical guidelines for TPVB exist. This study aimed to estimate the appropriate depth and distance for safe needle positioning in children. METHODS The depth (D) from the skin to the paravertebral space and the distance (A) from the spinous process to the needle entry point on the skin were measured using chest computed tomography (CT) in children aged between 1 and 9 years. Correlations between age, gender, weight, height, body mass index (BMI) and each of the anatomical measurements were analysed. RESULTS Each measurement correlated significantly with age, weight and height, but not with BMI (n = 373 children). Measurements A and D could be calculated by: A = 13.56 + (0.33 × age [years]) + (0.06 × weight [kg]) + 0.47 × (gender [female = 0, male = 1]); and D = 17.49 - (0.35 × age [years]) + (0.55 × weight [kg]). CONCLUSION These anatomical guidelines for TPVB are recommended to help prevent anaesthetic complications such as pneumothorax, when ultrasonography and CT are unavailable.
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Jang Y, Lee H, Lee S, Choi YS, Ahn B, Kim GH, Kim JJ. Cu(II)-induced molecular and physiological responses in the brown-rot basidiomycete Polyporales sp. KUC9061. J Appl Microbiol 2012; 113:790-7. [DOI: 10.1111/j.1365-2672.2012.05392.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Revised: 06/29/2012] [Accepted: 07/03/2012] [Indexed: 12/22/2022]
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Shim CY, Yang WI, Park S, Kang MK, Ko YG, Choi D, Jang Y, Chung N, Ha JW. Overweight and its association with aortic pressure wave reflection after exercise. Am J Hypertens 2011; 24:1136-42. [PMID: 21833042 DOI: 10.1038/ajh.2011.121] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Obesity is associated with arterial stiffening, left ventricular (LV) hypertrophy, and diastolic dysfunction. However, there is no data regarding dynamic changes in arterial hemodynamics with exercise in overweight subjects. We hypothesized that overweight women would show a different exercise response in wave reflection compared with lean women. METHODS A total of 59 overweight and 68 lean nondiabetic women (mean age 63 ± 7 years) underwent symptom-limited supine bicycle exercise testing with simultaneous two-dimensional and Doppler echocardiography. Central hemodynamics including central aortic pressure and augmentation index (AIx) were obtained at rest and immediately after peak exercise using radial artery tonometry. RESULTS Overweight women showed a higher LV mass index (lean vs. overweight; 40.2 ± 10.2 vs. 45.3 ± 11.0 g/m(2.7), P = 0.007) and a lower early diastolic mitral annular velocity (6.3 ± 1.8 vs. 5.5 ± 1.6 cm/s, P = 0.013) than lean women. Although the two groups did not differ in peripheral and central hemodynamics including AIx (36.3 ± 11.7 vs. 36.8 ± 10.2%, P = 0.830) and AIx normalized for heart rate 75/min (AIx@75, 30.4 ± 11.5 vs. 30.1 ± 9.9%, P = 0.885) at rest, AIx (20.9 ± 11.5 vs. 27.6 ± 10.4%, P = 0.004) and AIx@75 (25.8 ± 10.2 vs. 31.6 ± 7.7%, P = 0.002) at peak exercise were significantly higher in overweight women. In simple correlation analysis, body mass index (BMI) showed significant correlations with AIx, and AIx@75 at peak exercise, whereas no relationships were found with those parameters at rest. Multiple regression analysis showed that BMI was an independent determinant of AIx@75 at peak exercise (β = 0.28, P = 0.004). CONCLUSIONS Despite similar resting peripheral and central hemodynamics, the wave reflection in overweight women after exercise differed from that in lean women. These findings suggest that being overweight is related to higher wave reflection after exercise.
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Oguri M, Kato K, Yoshida T, Fujimaki T, Horibe H, Yokoi K, Watanabe S, Satoh K, Aoyagi Y, Tanaka M, Yoshida H, Shinkai S, Nozawa Y, Shin DJ, Lee JH, Jang Y, Yamada Y. Association of a genetic variant of BTN2A1 with metabolic syndrome in East Asian populations. J Med Genet 2011; 48:787-92. [DOI: 10.1136/jmg.2010.088138] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kim SA, Shim CY, Kim JM, Lee HJ, Choi DH, Choi EY, Jang Y, Chung N, Ha JW. Impact of left ventricular longitudinal diastolic functional reserve on clinical outcome in patients with type 2 diabetes mellitus. Heart 2011; 97:1233-8. [DOI: 10.1136/hrt.2010.219220] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Lee YJ, Kang BW, Chae YS, Lee SJ, Moon JH, Kim JG, Sohn SK, Jang Y, Jeon SW, Jung MK, Jung HY, Yu W. A pilot study of adjuvant chemotherapy with S-1 plus cisplatin for stage II-IV (M0) gastric adenocarcinoma. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e14663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Kim JS, Jang IK, Kim JS, Kim TH, Takano M, Kume T, Hur NW, Ko YG, Choi D, Hong MK, Jang Y. Optical coherence tomography evaluation of zotarolimus-eluting stents at 9-month follow-up: comparison with sirolimus-eluting stents. Heart 2009; 95:1907-12. [PMID: 19535352 PMCID: PMC2775122 DOI: 10.1136/hrt.2009.167759] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVE To evaluate the vascular response at 9 months after zotarolimus-eluting stent (ZES; Endeavor) implantation using optical coherence tomography (OCT). These findings were compared with those after implantation of a sirolimus-eluting stent (SES; Cypher Select). DESIGN Cross-sectional observational study with prospective OCT registry. SETTING Nine months after ZES or SES implantation. PATIENTS AND METHODS A total of 68 patients (32 ZES and 36 SES) underwent OCT at 9 months after stent implantation. The neointima hyperplasia (NIH) thickness inside each strut and percentage of NIH area at every 1 mm cross section were measured. MAIN OUTCOME MEASUREMENT The degree of neointimal coverage and the prevalence of malapposition at 9 months after ZES and SES implantation using OCT. RESULTS The mean (SD) NIH thickness (251.2 (110.0) mum vs 85.5 (53.3) mum, p<0.001) and percentage of NIH area (27.9 (9.1)% vs 11.2 (7.1)%, p<0.001) were significantly greater in ZES than in SES. The prevalence of uncovered strut as well as malapposed strut was significantly lower in ZES than in SES (0.3% vs 12.3%, p<0.001 and 0.08% vs 2.6%, p<0.001). Thrombus was not observed in ZES (0.0% in ZES vs 27.8% in SES, p = 0.001). CONCLUSIONS Neointimal coverage in ZES was almost complete and malapposition was very rare at 9-months' follow-up.
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Paik JK, Yeo HY, Kim HJ, Park JY, Lim HH, Lee JH, Jang Y, Lee JH. Abstract: P1428 ASSOCIATIONS OF SERUM LYCOPENE CONCENTRATION WITH BRACHIAL-ANKLE PULSE WAVE VELOCITY AND MARKERS OF OXIDATIVE STRESS AND INFLAMMATION. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)71436-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Hyun YJ, Park HY, Yun J, Kim JY, Chae JS, Lee SH, Lee JH, Jang Y. Abstract: P1248 ASSOCIATIONS OF PLASMA HOMOCYSTEINE LEVEL WITH BRACHIAL-ANKLE PULSE WAVE VELOCITY, LDL ATHEROGENECITY, AND INFLAMMATION PROFILE IN HEALTHY MEN. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)71265-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Moon JY, Choi D, Jang Y. Retrograde coronary interventions of chronic total occlusions. CASE REPORTS 2009; 2009:bcr2006091520. [DOI: 10.1136/bcr.2006.091520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Ha JW, Chung N, Jang Y, Rim SJ. Tricuspid stenosis and regurgitation: Doppler and color flow echocardiography and cardiac catheterization findings. Clin Cardiol 2009; 23:51-2. [PMID: 10680030 PMCID: PMC6655003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/15/2023] Open
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Kang WC, Ahn TH, Moon CI, Han SH, Shin EK, Kim JS, Ko YG, Choi D, Jang Y, Kim BK, Oh SJ, Jeon DW, Yang JY. Comparison of inflammatory markers and angiographic outcomes after implantation of sirolimus and paclitaxel-eluting stents. Heart 2008; 95:970-5. [PMID: 18772180 DOI: 10.1136/hrt.2008.153114] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVE We compared the degree of systemic inflammation and its relation to the angiographic outcomes after drug-eluting stent (DES) implantations. METHODS We implanted a single DES in 79 stable angina patients (50 men; 60.4 (9.5) years of age; sirolimus-eluting stent (SES), n = 38; paclitaxel-eluting stent (PES), n = 41). The high-sensitivity C-reactive protein (hs-CRP) and interleukin 6 (IL-6) levels were determined before and at 24 hours, 72 hours, and 4 weeks after the percutaneous coronary intervention (PCI). An angiography and intravascular ultrasound (IVUS) were performed. RESULTS The hs-CRP and IL-6 levels at baseline did not differ between the two groups. The hs-CRP increased significantly from baseline at 24 hours and 72 hours after the PCI in both groups and there was a significant increase in the IL-6 level at 24 hours after the PCI in both groups. However, there was no significant difference between the two groups in any of the hs-CRP or IL-6 measurements. At follow-up, the late lumen loss was significantly higher in the PES group than in the SES group (0.57 (0.56) mm vs 0.28 (0.58) mm, respectively, p = 0.020). The neointimal hyperplasia (NIH) volume in the PES group was significantly higher than that in the SES group (23.1 (22.7) vs 3.8 (7.1) mm(3), respectively, p = 0.000). The percentage luminal volume reduction was higher in the PES group than in the SES group (18.9 vs 3.9%, p = 0.002). The absolute values or change in the inflammatory markers did not correlate with the NIH or stent volume reduction. CONCLUSIONS Our study showed that the benefits obtained from the SES, which reduce neointimal proliferation, are not probably mediated by the attenuation of the systemic inflammatory markers hs-CRP or IL-6.
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Kim B, Oh S, Jeon D, Yoon S, Moon Y, Kim K, Jang Y, Cho H, Yang J. WOULD METABOLIC SYNDROME AFFECT THE PATTERNS OR CAUSES OF RESTENOSIS AFTER DRUG-ELUTING STENT IMPLANTATION? AN INTRAVASCULAR ULTRASOUND STUDY. ATHEROSCLEROSIS SUPP 2008. [DOI: 10.1016/s1567-5688(08)70534-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Hyun YJ, Koh SJ, Chae JS, Kim JY, Kim OY, Lim HH, Jang Y, Park S, Ordovas JM, Lee JH. Atherogenecity of LDL and unfavorable adipokine profile in metabolically obese, normal-weight woman. Obesity (Silver Spring) 2008; 16:784-9. [PMID: 18239579 DOI: 10.1038/oby.2007.127] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVE The relationship of visceral adiposity with adipocytokines and low-density lipoprotein (LDL) particle distribution and oxidation in Asian metabolically obese, normal-weight (MONW) individuals has not been evaluated. We aimed to investigate the association between visceral adiposity and adipocytokines and cardiovascular disease (CVD) risk factors in MONW Korean women with normal glucose tolerance. METHODS AND PROCEDURES We examined the metabolic characteristics of 135 non-obese (BMI <25 kg/m(2)) women aged 25-64 years. Twenty-five women (BMI <25 kg/m(2) and visceral fat adiposity (VFA) > or =100 cm(2)) were classified as MONW and 25 women (BMI <25 kg/m(2) and VFA <100 cm(2)), pair-matched for age, weight, height, and menopausal status, as control group. Plasma lipid profiles and adipocytokines were evaluated in these two groups. RESULTS MONW subjects had higher systolic (P < 0.05) and diastolic blood pressure (P < 0.005) and higher concentrations of triacylglycerol (TG) (P < 0.005), insulin (P < 0.01), and free fatty acid (FFA) (P < 0.05) than control subjects. There was no significant difference between two groups in LDL-cholesterol (LDL-C) concentrations; however, MONW subjects had smaller LDL particles (P < 0.01) and higher concentrations of oxidized LDL (ox-LDL) (P < 0.05) compared with controls. Moreover, MONW subjects had higher concentrations of tumor necrosis factor-alpha (TNF-alpha) (P < 0.05), interleukin-6 (IL-6) (P < 0.05) and leptin (P < 0.05), and lower plasma adiponectin concentrations (P < 0.05). Higher intake of saturated fat with lower ratio of polyunsaturated fatty acids (PUFAs) to saturated fatty acids (SFA) and lower fiber intake than normal subjects were found in MONW women. DISCUSSION We found an unfavorable inflammatory profile and a more atherogenic LDL profile in MONW female subjects even in the absence of a known CVD risk factors. Moreover, MONW consumed more saturated fat and less fiber than the control group.
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Park MH, Kim KS, Lee HJ, Cho YM, Lee HK, Park KS, Shin DJ, Jang Y, Kim KJ, Jung J, Kim HL, Oh B, Lee JY. Allelic frequencies and heterozygosities of microsatellite markers covering the whole genome in the Korean. J Hum Genet 2008; 53:254-266. [PMID: 18259685 DOI: 10.1007/s10038-008-0247-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2007] [Accepted: 12/25/2007] [Indexed: 10/22/2022]
Abstract
Microsatellite markers are an essential tool for genetic linkage analysis because of their high polymorphism content. Four hundred commercially available markers covering the entire genome were genotyped from 578 sib individuals from 249 Korean families. Allelic frequencies and heterozygosities were determined for each marker loci and compared between Korean, Taiwanese, Japanese and Caucasian populations. In the three Asian populations, 10-13% of the markers had less than 0.6 heterozygosity, whereas in the Caucasian population, only 0.5% of the markers had less than 0.6 heterozygosity. Mean identical by descent (IBD) values were calculated for 578 sib individuals. Analysis of IBD values greater than 0.5 suggested that markers with low heterozygosity can also provide positive linkages, at least for the IBD sharing method of model-free linkage analysis. The data presented in this study will be a useful reference for genome-wide screens of Koreans and comparative studies with other ethnic populations.
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Seo J, Cho N, Kim H, Tsurumi T, Jang Y, Lee W, Lee S. Cell cycle arrest and lytic induction of EBV-transformed B lymphoblastoid cells by a histone deacetylase inhibitor, Trichostatin A. Oncol Rep 2008. [DOI: 10.3892/or.19.1.93] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Jang S, Park SR, Jang Y, Park J, Yoon Y, Park S. Automated Individual Prescription of Exercise with an XML-based Expert System. CONFERENCE PROCEEDINGS : ... ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL CONFERENCE 2007; 2006:882-5. [PMID: 17282325 DOI: 10.1109/iembs.2005.1616556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Continuously motivating people to exercise regularly is more important than finding a barriers such as lack of time, cost of equipment or gym membership, lack of nearby facilities and poor weather or night-time lighting. Our proposed system presents practicable methods of motivation through a web-based exercise prescription service. Users are instructed to exercise according to their physical ability by means of an automated individual prescription of exercise checked and approved by a personal trainer or exercise specialist after being tested with the HIMS, fitness assessment system. Furthermore, utilizing BIOFIT exercise prescriptions scheduled by an expert system can help users exercise systematically. Automated individual prescriptions are built in XML based documents because the data needs to be flexible, expansible and convertible structures to process diverse exercise templates. Web-based exercise prescription service makes users stay interested in exercise even if they live in many different environments.
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Suk L, Oh S, Jang Y, Son H. The factors influencing the anxiety and depression of parents of children with burn injured. Burns 2007. [DOI: 10.1016/j.burns.2006.10.357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Moon JY, Choi D, Jang Y. Retrograde coronary interventions of chronic total occlusions. Heart 2007; 93:199. [PMID: 17228069 PMCID: PMC1861386 DOI: 10.1136/hrt.2006.091520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Park JI, Jang Y, Lee ES. 335 EFFECT OF VITAMIN E ON THE DEVELOPMENT OF BOVINE OOCYTES AFTER CHEMICAL ACTIVATION. Reprod Fertil Dev 2007. [DOI: 10.1071/rdv19n1ab335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Oxidative stress is known to induce apoptotic cell death by reactive oxygen species (ROS) generated from in vitro culture systems. This study was conducted to evaluate the effect of Vitamin E (VitE), as antioxidant, on development of bovine embryos activated in vitro. Bovine ovaries were collected from slaughtered cows at a local abattoir. Oocytes were aspirated from follicles 3-8 mm in diameter and transferred to maturation medium: tissue culture medium (TCM)-199 supplemented with 10% (v/v) fetal calf serum, 100 mg/mL-1 l-cysteine, 20 mg/mL-1 sodium pyruvate, gonadotropins (250 IU each of eCG and hCG/mL), 10 mg/mL-1 epidermal growth factor, and 100 �M VitE. Oocytes were cultured at 38.9�C in 5% CO2 in humidified air. After 22 hours of culture, oocytes with polar bodies were selected and subjected to activation treatments. Oocytes were exposed to calcium ionomycin (5 �M for 5 min), followed by incubation with 6-DMAP (2 mM) for 3.5 hours in medium supplemented with or without VitE (100 �M). After activation, oocytes were cultured in mSOF medium containing 0.8% BSA at 38.9�C in 5% CO2, 5% O2 in humidified air for 7–8 days. Cell numbers were counted by the number of nuclei of blastocysts stained with Hoechst 33342, and apoptosis was detected by TUNEL assay using a MK500 kit (Takara Bio, Inc., Otsu, Shiga, Japan). Total cell and apoptotic cell number were determined under a fluorescence microscope. Data were analyzed using Student's t-test and chi-square test. The cleavage and blastocyst rates were significantly higher (P < 0.05) after activation with VitE (78.1% and 16.3%, n = 80) than without VitE (66.7% and 11.0%, n = 60). Total cell numbers were also significantly higher (P < 0.05) in blastocysts after activation with VitE (143.0 ± 34.02, n = 21) than in those without VitE (127.63 ± 40.25, n = 20). However, the percentage of TUNEL-positive (apoptotic) cells was similar between blastocysts activated with VitE (5.38 ± 2.22) and those without VitE (6.76 ± 1.98). The results of the present study demonstrate that vitamin E added to activation medium promoted further development of activated embryos, although its role in the alleviation of apoptosis remains unclear.
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