Time filter

Source Type

Kim M.,Yonsei University | Paik J.K.,Yonsei University | Kang R.,Yonsei University | Kim S.Y.,Yonsei University | And 2 more authors.
Metabolism: Clinical and Experimental | Year: 2013

Objective: The purpose of this study was to assess whether the metabolically healthy overweight/obese phenotype is associated with decreased oxidative stress compared with normal-weight individuals with metabolic syndrome (MetS). Materials/Methods: Plasma oxidized LDL (ox-LDL) and urinary 8-epi-prostaglandin F2α (8-epi-PGF2α) were analyzed in a cross-sectional study of 1846 healthy postmenopausal women. Participants were classified by presence (n = 569) or absence (n = 1277) of MetS and by BMI (18.5-24.9 kg/m2 = normal weight, n = 1254; ≥ 25 kg/m2 = overweight/obese, n = 592). MetS was diagnosed with the modified National Cholesterol Education Program Adult Treatment Panel III criteria. Results: Compared to normal weight women with MetS (n = 296), metabolically healthy overweight/obese women (n = 319) showed lower blood pressure, triglyceride, and glucose and higher HDL cholesterol, adiponectin, and LDL particle size. Ox-LDL was higher in overweight/obese women without MetS than in normal weight women without MetS (n = 958) but was lower than in women with MetS. Urinary 8-epi-PGF2α level was about 11% lower in women without MetS than in women with MetS. Normal weight women with MetS had greater odds of having ox-LDL (multivariate odds ratio [OR] 2.42, 95% CI: 1.65-3.55) and 8-epi-PGF2α (OR 1.49; CI: 1.03-2.14) levels in the top quartile compared to normal weight women without MetS after adjusting for age, drinking, smoking, total- and LDL-cholesterol, and high sensitivity C-reactive protein. Additionally, there was no significant correlation between ox-LDL and 8-epi-PGF2α. Conclusions: The metabolically healthy overweight/obese phenotype was associated with a better overall metabolic profile and less oxidative stress than that observed in normal weight individuals with MetS. Furthermore, there was a lack of association between ox-LDL and 8-epi-PGF2α. © 2013 Elsevier Inc. Source

Park S.,Yonsei University | Yoon S.-J.,National Health Insurance Corporation | Tae H.-J.,U.S. National Institute on Aging | Shim C.Y.,Yonsei University
Frontiers in Bioscience | Year: 2011

RAGE is pattern recognizing receptors for diverse endogenous ligands. RAGE activation by RAGE ligands is known to be associated with reactive oxygen species generation, activation of NF kappa B, as well as recruitment of proinflammatory cells. Activated endothelial cells, vascular smooth muscle cells in atherosclerotic plaques and activated inflammatory cells all have increased expression of RAGE, which with its interaction with RAGE ligands increases the secretion of proinflammatory cytokines and cell adhesion molecules. Furthermore, RAGE may have a significant role in leukocyte recruitment into the intima of the atherosclerosis. Initial insults resulting in endothelial dysfunction will result in leukocyte infiltration, oxidative stress and vascular inflammation that is amplified by RAGE activation. RAGE and its interaction with RAGE ligands may be important for initializing and maintaining the pathological processes that result in various entities of cardiovascular disease. Soluble RAGE competitively inhibits the binding of RAGE ligands to RAGE and attenuates the development of atherosclerosis in vivo. Thus RAGE may be a promising target for treatment of cardiovascular disease in the future. Source

Park M.-J.,National Health Insurance Corporation | Kim H.-S.,Catholic University of Korea
International Journal of Medical Informatics | Year: 2012

Purpose: The present study evaluated whether an intervention using a short message service (SMS) by personal cellular phone and Internet would reduce cardiovascular risk factors in post-menopausal women with abdominal obesity over 12 weeks. Methods: This is a quasi-experimental design with pre and post tests. Participants were recruited from the gynecology outpatient and family medicine departments of a tertiary care hospital located in an urban city of South Korea. Only 67 subjects completed the entire study, 34 in the intervention group and 33 controls. The goal of intervention was to reduce waist circumference (WC), body weight (BW) and blood pressure (BP) levels. Before the intervention, demographic variables, WC, BW, BP, fasting plasma glucose (FPG) and serum lipids were measured as pre-test data. The WC, BW, BP, FPG and serum lipids were measured again 12 weeks later. Patients in the intervention group were requested to record their WC, BW, BP, type and amount of diet and exercise in a weekly web-based diary through the Internet or by cellular phone. The researchers sent weekly recommendations on diet and exercise as an intervention to each patient, by both cellular phone and Internet. The intervention was applied for 12 weeks. Results: WC and BW significantly decreased by 3.0. cm and 2.0. kg, respectively, at 12 weeks compared with the baseline in the intervention group. However, the mean changes in the control group significantly increased by 0.9. cm and 0.7. kg. Systolic BP (SBP) and diastolic BP (DBP) significantly decreased by 6.5 and 4.6. mmHg in the intervention group, respectively. The mean changes in the control group were not significant in either SBP or DBP. A significant mean decrease in total cholesterol (TC) was observed for the intervention group by 12.9. mg/dl, while the control group showed a significant mean increase by 1.5. mg/dl. Low-density lipoprotein-cholesterol (LDL-C) for the intervention group showed a significant mean decrease 11.3. mg/dl. The mean change in the control group was, however, not significant. Conclusion: Web-based individual intervention using both SMS and Internet improved WC, BW, BP, TC, and LDL-C during 12 weeks in post-menopausal women with abdominal obesity. © 2012 Elsevier Ireland Ltd. Source

Kim J.H.,Yonsei University | Kim Y.M.,Yonsei University | Chung E.J.,National Health Insurance Corporation | Lee S.Y.,National Medical Center | Koh H.J.,Yonsei University
American Journal of Ophthalmology | Year: 2012

To evaluate the utility of preoperative optical coherence tomography (OCT) and multifocal electroretinography (mfERG) in prediction of visual outcomes after idiopathic epiretinal membrane (ERM) surgery. Retrospective, observational case series. One hundred eyes of 100 patients with idiopathic unilateral ERM who underwent vitrectomy for ERM removal were retrospectively reviewed. Correlations between preoperative data (OCT and mfERG) and final best-corrected visual acuity (BCVA) were investigated using Pearson correlation analysis. One-way analysis of variance (ANOVA) was used to determine whether final BCVA and mfERG values differed among subgroups varying in photoreceptor integrity status. Receiver operating characteristic (ROC) curve analysis was performed to obtain a cutoff value of the P1 implicit time predicting visual recovery (final BCVA <20/25). BCVA significantly improved, and 65 of 84 eyes (77%) achieved visual recovery of more than 2 Snellen lines after ERM surgery. Final BCVA was significantly correlated with preoperative photoreceptor integrity and P1 implicit time. The area under the ROC (AUROC) curve was statistically significant when P1 implicit time was examined, and the cutoff value for good visual prognosis was 40.81 msec (sensitivity: 72.7%; specificity: 81.3%). Photoreceptor disruption detected by OCT and P1 implicit time delay on mfERG were significant predictors of poor visual recovery after ERM surgery. © 2012 Elsevier Inc. All Right Reserved. Source

Lee T.G.,Yonsei University | Chung S.,National Health Insurance Corporation | Chung Y.K.,Yonsei University
Archives of Plastic Surgery | Year: 2012

Background Even though the quality of medical and surgical care has improved remarkably over time, iatrogenic injuries that require surgical treatment including injuries caused by cast and elastic bandage pressure, extravasation, and dopamine-induced ischemia still frequently occur. The goal of this study was to estimate the incidence and analyze the distribution of iatrogenic injuries referred to our department. Methods A retrospective clinical review was performed from April 2006 to November 2010. In total, 196 patients (116 females and 80 males) were referred to the plastic surgery department for the treatment of iatrogenic injuries. We analyzed the types and anatomic locations of iatrogenic complications, along with therapeutic results. Results An extravasation injury (65 cases, 37.4%) was the most common iatrogenic complication in our study sample, followed by splint-induced skin ulceration, dopamineinduced necrosis, prefabricated pneumatic walking brace-related wounds and elastic bandage-induced wounds. Among these, prefabricated pneumatic walking brace-related complication incidence increased the most during the 5-year study period. Conclusions The awareness of the very common iatrogenic complications and its causes may allow physicians to reduce their occurrence and allow for earlier detection and referral to a plastic surgeon. We believe this is the first study to analyze iatrogenic complications referred to a plastic surgery department in a hospital unit. © 2012 The Korean Society of Plastic and Reconstructive Surgeons. Source

Discover hidden collaborations