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Ryu DS, Lee YS, Oh TH, Kwak KW. 1346 OUTCOMES OF TRANSURETHRAL REMOVAL OF INTRAVESICAL OR INTRAURETHRAL MESH FOLLOWING MIDURETHRAL SLING SURGERY. J Urol 2012. [DOI: 10.1016/j.juro.2012.02.1729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ji JH, Shafi M, Lee YS, Kim DJ. Inferior paralabral ganglion cyst of the shoulder with labral tear -- a rare cause of shoulder pain. Orthop Traumatol Surg Res 2012; 98:193-8. [PMID: 22386705 DOI: 10.1016/j.otsr.2011.09.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2010] [Revised: 09/18/2011] [Accepted: 09/26/2011] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Paralabral ganglion cysts of the shoulder are rare, and their pathogenesis is similar to that of meniscal cysts. The paralabral cysts are most frequently reported along the posterior, superior, and anterior aspects of the glenohumeral joint and are uncommon inferiorly to the joint. These cysts rarely become evident clinically, unless they cause compression of surrounding structures, i.e. nerve. PATIENTS AND METHODS We report a retrospective series of five patients with inferior paralabral ganglion cysts of the shoulder without compression of the surrounding nerve which were treated during the period from March 2007 to December 2009. All these patients presented with only chronic shoulder pain as their chief complaint, and preoperative MRI showed the cyst over the inferior aspect of a torn glenoid labrum. All patients were treated by arthroscopic cystic decompression with labrum repair. All patients were re-evaluated with MRI performed at an average of 15 months postoperatively. The clinical outcome, including the Constant score, was assessed for all patients at a median of 16 months postoperatively. RESULTS All the five patients had remission of pain and were satisfied with the shoulder function. The postoperative MRI in all patients showed no labral cyst recurrence. The median Constant score improved from a preoperative level of 81.5 points to 98.0 points at last follow-up. CONCLUSION This study demonstrates that, in the absence of any nerve compression symptoms around the shoulder joint, inferior paralabral cysts with labral tear also be considered in the differential diagnosis of chronic shoulder pain. Arthroscopic repair of the cyst with repair of the labrum can lead to the disappearance of symptoms. Knowledge of this clinical condition and its imaging features is critical for a correct diagnosis of this uncommon cause of chronic shoulder pain. LEVEL OF EVIDENCE Level IV. Retrospective therapeutic study.
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Lee DG, Lee YS, Park KH, Baek M. 1620 RISK FACTORS FOR CONTRALATERAL PATENT PROCESSUS VAGINALIS DETERMINED BY TRANSINGUINAL LAPAROSCOPIC EXAMINATION. J Urol 2012. [DOI: 10.1016/j.juro.2012.02.1415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Valla T, Pan ZH, Gardner D, Lee YS, Chu S. Photoemission spectroscopy of magnetic and nonmagnetic impurities on the surface of the Bi2Se3 topological insulator. PHYSICAL REVIEW LETTERS 2012; 108:117601. [PMID: 22540510 DOI: 10.1103/physrevlett.108.117601] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Indexed: 05/31/2023]
Abstract
Dirac-like surface states on surfaces of topological insulators have a chiral spin structure that suppresses backscattering and protects the coherence of these states in the presence of nonmagnetic scatterers. In contrast, magnetic scatterers should open the backscattering channel via the spin-flip processes and degrade the state's coherence. We present angle-resolved photoemission spectroscopy studies of the electronic structure and the scattering rates upon the adsorption of various magnetic and nonmagnetic impurities on the surface of Bi2Se3, a model topological insulator. We reveal a remarkable insensitivity of the topological surface state to both nonmagnetic and magnetic impurities in the low impurity concentration regime. Scattering channels open up with the emergence of hexagonal warping in the high-doping regime, irrespective of the impurity's magnetic moment.
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Lee YS, Choo MS, Cho WJ, Lee KS. Patient-reported Goal and Goal Achievement: The Most Individualized Method of Outcome Assessment in Patients with Lower Urinary Tract Symptoms. Low Urin Tract Symptoms 2012; 4 Suppl 1:56-61. [PMID: 26676701 DOI: 10.1111/j.1757-5672.2011.00137.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Patients with lower urinary tract diseases often have a constellation of symptoms, and the degree of distress due to individual symptoms varies. In particular, some symptoms are more bothersome to patients and lead to treatment. However, traditional outcomes, such as urodynamic data, voiding diaries, and standardized patient-reported outcomes, may fail to address the individual factors. In contrast, patient-centered outcomes rely on patients to assess treatment outcomes in terms of their concerns or goals. Goal achievement is a patient-centered outcome that was pioneered in prolapse surgery. Recently, this most individualized outcome measure has been evaluated in the context of lower urinary tract symptoms (LUTS). According to the studies, most patients with LUTS have symptom-related goals. After treatment, goal achievement in patients with overactive bladder or benign prostatic obstruction was low even when there were significant improvements in symptom severity in terms of traditional outcome measures. On the other hand, most women with stress incontinence achieved their treatment goals after midurethral sling surgeries. There are ongoing efforts to develop valid and reliable methods for assessing goal achievement that can facilitate the complex rating process and have responsiveness. Goal achievement shows a limited correlation with standardized patient-reported outcomes and no significant correlation with objective outcomes. Thus, at the moment, it can be used as a complimentary outcome measure along with other traditional methods. Further research is needed to reveal the correlation between goal achievement and overall patient satisfaction and, ultimately, to determine if assessing goal achievement can enhance patient satisfaction.
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Lee YS, Tae K, Lee SH, Cho SH, Jeong JH, Min HJ, Ji YB. Change of telomerase activity in peripheral whole blood of head and neck squamous cell carcinoma patients before and after surgery: a pilot study. Clin Transl Oncol 2012; 13:747-53. [PMID: 21975338 DOI: 10.1007/s12094-011-0727-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND The purpose of this study was to evaluate telomerase activity in peripheral whole blood from head and neck squamous cell carcinoma (HNSCC) patients as a biomarker for diagnosis of HNSCC or detection of recurrence during follow-up. MATERIALS AND METHODS Telomerase activity was measured from peripheral whole blood extracts by telomerase repeat amplification protocol (TRAP) in HNSCC patients before and after surgery and in a control group. Sixty-two HNSCC patients and 42 control subjects were included. RESULTS Telomerase activity was found in 41 out of 62 (66.1%) HNSCC patients before surgery and in 8 out of 42 (19.0%) controls (p<0.001). Among 41 HNSCC patients who showed positive telomerase activity before surgery, 32 (78.1%) showed a conversion of telomerase activity to negative after surgery. In follow-up, 6 out of 8 (75%) showed conversion of telomerase activity from negative to positive after recurrence. Telomerase activity was changed to negative in 4 out of 6 (66%) recurred patients with positive telomerase activity after second surgery. CONCLUSION The telomerase activity in peripheral whole blood extracts of HNSCC patients might be a useful biomarker for detecting recurrence after treatment. Further study with larger sample size using a more sensitive detection method of telomerase activity is necessary to verify these results.
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Kwon JH, Jang JW, Lee S, Lee J, Chung KW, Lee YS, Choi JY. Pretreatment HBeAg level and an early decrease in HBeAg level predict virologic response to entecavir treatment for HBeAg-positive chronic hepatitis B. J Viral Hepat 2012; 19:e41-7. [PMID: 22239525 DOI: 10.1111/j.1365-2893.2011.01509.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
There are few reports on hepatitis B e antigen (HBeAg) titres during nucleos(t)ide analogues treatment. We investigated the changes in HBeAg levels in patients treated with entecavir and the usefulness of HBeAg quantification for predicting antiviral response. Ninety-five consecutive HBeAg-positive patients treated with entecavir for more than 48 weeks were enrolled. Serum levels of hepatitis B surface antigen (HBsAg), HBeAg and HBV DNA were assessed at 4-week intervals to week 24 and thereafter at 12-week intervals. Virologic response (Y1VR) was defined as an undetectable HBV DNA level at week 48 of therapy. During 48 weeks, HBeAg and HBV DNA level decreased significantly in a biphasic manner and HBsAg level tended to decease. Fifty-three patients (55.8%) attained Y1VR. Pretreatment HBeAg levels were significantly lower in the Y1VR group than in no Y1VR group. At week 4 and 12 of therapy, 25% and 41.4% of patients showed a decrease of HBeAg levels with >0.5 log(10) and >1.0 log(10) from baseline, respectively. These patients achieved more Y1VR than those with less decrease of HBeAg levels (97.7%vs 22.2% and 86.2%vs 29.3%, respectively). HBeAg level at week 12 had higher predictive values for Y1VR than HBV DNA level. Multivariate analysis revealed that a pretreatment HBeAg level of <360 PEIU/mL and the reduction in HBeAg level >1.0 log(10) at week 12 were associated with Y1VR. These results suggest that pretreatment HBeAg level and an early decrease in HBeAg level are useful measurements for predicting one-year virologic response during entecavir treatment.
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Jo DJ, Lee YS, Oh TH, Ryu DS, Kwak KW. Outcomes of transurethral removal of intravesical or intraurethral mesh following midurethral sling surgery. Korean J Urol 2011; 52:829-34. [PMID: 22216395 PMCID: PMC3246515 DOI: 10.4111/kju.2011.52.12.829] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Accepted: 10/10/2011] [Indexed: 11/18/2022] Open
Abstract
Purpose To present outcomes of transurethral removal (TUR) of intravesical or intraurethral mesh after midurethral slings. Materials and Methods This was a retrospective chart review of 23 consecutive women: 20 with intravesical mesh and 3 with intraurethral mesh. Results To remove the mesh, transurethral resection with an electrode loop (TUR-E) was used in 16 women and transurethral resection with a holmium laser (TUR-H) was used in 7. The median follow-up was 2.1 months. Twenty-six percent of the women (6/23) had a mesh remnant: 6.2% (1/16) of the women treated with TUR-E and 71.4% (5/7) of the women treated with TUR-H. Of the 5 women treated with TUR-H, 3 underwent concomitant transvaginal removal. On the follow-up cystoscopic exam, a mesh remnant was observed in 3 women (1 treated with TUR-E and 2 treated with TUR-H). Vesico-vaginal fistulas were found in 2 women during and after TUR-E, respectively. Stress urinary incontinence recurred in 1 woman. Conclusions TUR-E has a high success rate but carries a risk of bladder perforation. Complete resection using TUR-H depends on the location of the mesh and the range of motion of the instrument.
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134
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Wang YH, Hsieh D, Pilon D, Fu L, Gardner DR, Lee YS, Gedik N. Observation of a warped helical spin texture in Bi2Se3 from circular dichroism angle-resolved photoemission spectroscopy. PHYSICAL REVIEW LETTERS 2011; 107:207602. [PMID: 22181776 DOI: 10.1103/physrevlett.107.207602] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2011] [Indexed: 05/31/2023]
Abstract
A differential coupling of topological surface states to left- versus right-circularly polarized light is the basis of many optospintronics applications of topological insulators. Here we report direct evidence of circular dichroism from the surface states of Bi(2)Se(3) using laser-based time-of-flight angle-resolved photoemission spectroscopy. By employing a novel sample rotational analysis, we resolve unusual modulations in the circular dichroism photoemission pattern as a function of both energy and momentum, which perfectly mimic the predicted but hitherto unobserved three-dimensional warped spin texture of the surface states. By developing a microscopic theory of photoemission from topological surface states, we show that this correlation is a natural consequence of spin-orbit coupling. These results suggest that our technique may be a powerful probe of the spin texture of spin-orbit coupled materials in general.
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Bae YJ, Kim YS, Park CS, Lee YS, Chang YS, Cho YS, Jang AS, Cho SH, Choi BW, Kim SG, Moon HB, Kim TB. Reliability and validity of the St George's Respiratory Questionnaire for asthma. Int J Tuberc Lung Dis 2011; 15:966-71. [PMID: 21682973 DOI: 10.5588/ijtld.10.0603] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The St George's Respiratory Questionnaire (SGRQ) is a self-administered questionnaire that has been used to evaluate the health-related quality of life of patients with chronic respiratory diseases. OBJECTIVE To assess the validity and reliability of the SGRQ for a large population with asthma. DESIGN We used the previously developed Korean version of the SGRQ (SGRQ-K) to assess 676 asthma patients enrolled from the Cohort for Reality and Evolution of Adult Asthma in Korea study. Cronbach's α was used to assess test reliability and Pearson's correlation coefficient was used to assess the correlation between SGRQ scores and various clinical factors. RESULTS The total SGRQ-K score had acceptable reliability (Cronbach's α = 0.92). The total SGRQ-K score was significantly correlated with symptom duration (r = 0.157, P < 0.001), pulmonary function (% FEV(1) of predicted r = -0.314, P < 0.001; % FVC of predicted r = -0.224, P < 0.001; FEV(1)/FVC r = -0.224, P < 0.001), asthma severity (r = 0.278, P < 0.001) and history of asthma exacerbation. CONCLUSION With the exception of the SGRQ-K symptoms, SGRQ-K is a reliable and valid test for evaluation of the quality of life of patients with asthma. Scores were well correlated with duration of symptoms, lung function and previous history of asthma exacerbation.
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Han ME, Jeon TY, Hwang SH, Lee YS, Kim HJ, Shim HE, Yoon S, Baek SY, Kim BS, Kang CD, Oh SO. Cancer spheres from gastric cancer patients provide an ideal model system for cancer stem cell research. Cell Mol Life Sci 2011; 68:3589-605. [PMID: 21448722 PMCID: PMC11114917 DOI: 10.1007/s00018-011-0672-z] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2010] [Revised: 02/06/2011] [Accepted: 02/24/2011] [Indexed: 12/14/2022]
Abstract
Cancer stem cells have been hypothesized to drive the growth and metastasis of tumors. Because they need to be targeted for cancer treatment, they have been isolated from many solid cancers. However, cancer stem cells from primary human gastric cancer tissues have not been isolated as yet. For the isolation, we used two cell surface markers: the epithelial cell adhesion molecule (EpCAM) and CD44. When analyzed by flow cytometry, the EpCAM(+)/CD44(+) population accounts for 4.5% of tumor cells. EpCAM(+)/CD44(+) gastric cancer cells formed tumors in immunocompromised mice; however, EpCAM(-)/CD44(-), EpCAM(+)/CD44(-) and EpCAM(-)/CD44(+) cells failed to do so. Xenografts of EpCAM(+)/CD44(+) gastric cancer cells maintained a differentiated phenotype and reproduced the morphological and phenotypical heterogeneity of the original gastric tumor tissues. The tumorigenic subpopulation was serially passaged for several generations without significant phenotypic alterations. Moreover, EpCAM(+)/CD44(+), but not EpCAM(-)/CD44(-), EpCAM(+)/CD44(-) or EpCAM(-)/CD44(+) cells grew exponentially in vitro as cancer spheres in serum-free medium, maintaining the tumorigenicity. Interestingly, a single cancer stem cell generated a cancer sphere that contained various differentiated cells, supporting multi-potency and self-renewal of a cancer stem cell. EpCAM(+)/CD44(+) cells had greater resistance to anti-cancer drugs than other subpopulation cells. The above in vivo and in vitro results suggest that cancer stem cells, which are enriched in the EpCAM(+)/CD44(+) subpopulation of gastric cancer cells, provide an ideal model system for cancer stem cell research.
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137
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Baek S, Lee YS, Shim HE, Yoon S, Baek SY, Kim BS, Oh SO. Vitamin D3 regulates cell viability in gastric cancer and cholangiocarcinoma. Anat Cell Biol 2011; 44:204-9. [PMID: 22025972 PMCID: PMC3195824 DOI: 10.5115/acb.2011.44.3.204] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2011] [Revised: 09/06/2011] [Accepted: 09/07/2011] [Indexed: 11/27/2022] Open
Abstract
A low serum level of vitamin D has been associated with an increased incidence of gastrointestinal tract cancers. However, the effects of vitamin D3 have not been investigated in gastric cancer and cholangiocarcinoma. In the present study, we found that vitamin D3 treatment significantly suppressed the viability of gastric cancer and cholangiocarcinoma cells. Moreover, vitamin D3 had a synergistic effect with other anti-cancer drugs, such as paclitaxel, adriamycin, and vinblastine, for suppressing cell viability. To determine the underlying mechanism involved in the regulation of viability by vitamin D3, we examined the effects of vitamin D3 on expression of hedgehog signaling target genes, which has been associated with gastric cancer and cholangiocarcinoma. Vitamin D3 treatment decreased the level of mRNA expression of patched1, Gli1, cyclin D1, and Bcl2, suggesting the possibility that vitamin D3 may act through regulation of hedgehog signaling. From the above results, we conclude that vitamin D3 regulates cell viability in gastric cancer and cholangiocarcinoma.
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Kim JM, Lee KT, Lim KS, Park EW, Lee YS, Hong KC. Effects of p.C430S polymorphism in the PPARGC1A gene on muscle fibre type composition and meat quality in Yorkshire pigs. Anim Genet 2011; 41:642-5. [PMID: 20412126 DOI: 10.1111/j.1365-2052.2010.02042.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The peroxisome proliferator-activated receptor-gamma coactivator-1A (encoded by PPARGC1A) is involved in the formation of type I fibres. Therefore, the PPARGC1A gene can be considered as a functional candidate gene for muscle fibre type composition and meat quality in pigs. The aim of this study was to investigate the associations of the p.C430S polymorphic site in exon 8 of the PPARGC1A gene with muscle fibre characteristics and meat quality traits. The polymorphism was genotyped by PCR-RFLP using AluI restriction enzyme on a total of 152 Yorkshire pigs. Statistical analyses revealed that the p.C430S genotypes significantly affected number (P < 0.05) and area (P < 0.01) of type I muscle fibre, and were significantly associated with muscle pH (P < 0.001) and lightness(P < 0.01). On the basis of these results, we suggest that the p.C430S polymorphism can induce variation of type I fibre formation in porcine longissimus dorsi muscle and that it can be used as a meaningful molecular marker for better meat quality.
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139
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Hsieh D, Mahmood F, McIver JW, Gardner DR, Lee YS, Gedik N. Selective probing of photoinduced charge and spin dynamics in the bulk and surface of a topological insulator. PHYSICAL REVIEW LETTERS 2011; 107:077401. [PMID: 21902428 DOI: 10.1103/physrevlett.107.077401] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Revised: 06/01/2011] [Indexed: 05/27/2023]
Abstract
Topological insulators possess completely different spin-orbit coupled bulk and surface electronic spectra that are each predicted to exhibit exotic responses to light. Here we report time-resolved fundamental and second harmonic optical pump-probe measurements on the topological insulator Bi(2)Se(3) to independently measure its photoinduced charge and spin dynamics with bulk and surface selectivity. Our results show that a transient net spin density can be optically induced in both the bulk and surface, which may drive spin transport in topological insulators. By utilizing a novel rotational anisotropy analysis we are able to separately resolve the spin depolarization, intraband cooling, and interband recombination processes following photoexcitation, which reveal that spin and charge degrees of freedom relax on very different time scales owing to strong spin-orbit coupling.
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140
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Pan ZH, Vescovo E, Fedorov AV, Gardner D, Lee YS, Chu S, Gu GD, Valla T. Electronic structure of the topological insulator Bi2Se3 using angle-resolved photoemission spectroscopy: evidence for a nearly full surface spin polarization. PHYSICAL REVIEW LETTERS 2011; 106:257004. [PMID: 21770666 DOI: 10.1103/physrevlett.106.257004] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2011] [Indexed: 05/31/2023]
Abstract
We performed high-resolution spin- and angle-resolved photoemission spectroscopy studies of the electronic structure and the spin texture on the surface of Bi2Se3, a model TI. By tuning the photon energy, we found that the topological surface state is well separated from the bulk states in the vicinity of kz = Z plane of the bulk Brillouin zone. The spin-resolved measurements in that region indicate a very high degree of spin polarization of the surface state, ~0.75, much higher than previously reported. Our results demonstrate that the topological surface state on Bi2Se3 is highly spin polarized and that the dominant factors limiting the polarization are mainly extrinsic.
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Yang WM, Jung KJ, Lee MO, Lee YS, Lee YH, Nakagawa S, Niwa M, Cho SS, Kim DW. Transient expression of iron transport proteins in the capillary of the developing rat brain. Cell Mol Neurobiol 2011; 31:93-9. [PMID: 21061168 DOI: 10.1007/s10571-010-9558-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2010] [Accepted: 08/11/2010] [Indexed: 11/28/2022]
Abstract
Iron is essential for normal brain function and its uptake in the developing rat brain peaks during the first two weeks after birth, prior to the formation of the blood–brain barrier (BBB). The first step of iron transport from the blood to the brain is transferrin receptor (TfR)-mediated endocytosis in the capillary endothelial cells. However, the subsequent step from the endothelium into interstitium has not been fully described. The goal of this study was to examine the expression of iron transport proteins by immunodetection and RT–PCR in the developing rat brain. Tf and TfR are transiently expressed in perivascular NG2+ cells of the capillary wall during the early postnatal weeks in the rat brain. However, MTP-1 and hephaestin were expressed in endothelial cells, but not in the NG2+ perivascular cells. Immunoblot analysis for these iron transfer proteins in the developing brain generally confirmed the immunochemical findings. Furthermore, the expression of Tf and TfR in the blood vessels precedes its expression in oligodendrocytes, the main iron-storing cells in the vertebrate brain. RT–PCR analysis for the primary culture of endothelial cells and pericytes revealed that Tf and TfR were highly expressed in the pericytes while MTP-1 and hephaestin were expressed in the endothelial cells. The specific expression of Tf and TfR in brain perivascular cells and MTP-1 and hephaestin in endothelial cells suggest the possibility that trafficking of elemental iron through perivascular cells may be instrumental in the distribution of iron in the developing central nervous system.
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Song K, Choo MS, Lee KS, Han JY, Lee YS, Kim JC, Cho JS. The Long-term Effect of Alfuzosin in Patients With Lower Urinary Tract Symptoms Suggestive of Benign Prostate Hyperplasia: Evaluation of Voiding and Storage Function With Respect to Bladder Outlet Obstruction Grade and Contractility. Urology 2011; 77:1177-82. [DOI: 10.1016/j.urology.2010.10.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2010] [Revised: 09/24/2010] [Accepted: 10/13/2010] [Indexed: 11/17/2022]
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Lee HN, Lee YS, Han DH, Lee KS. 797 ROLE OF URINARY NERVE GROWTH FACTOR AS A SPECIFIC BIOMARKER FOR DIAGNOSING AND MONITORING OVERACTIVE BLADDER. J Urol 2011. [DOI: 10.1016/j.juro.2011.02.615] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Han JY, Lee YS, Lee KS, Choo MS. Patient Reported Goal Achievement Following the Midurethral Sling Procedure for Female Stress Urinary Incontinence. Low Urin Tract Symptoms 2011; 3:25-8. [PMID: 26676348 DOI: 10.1111/j.1757-5672.2010.00077.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Patient perspective is very important for evaluating surgical outcomes. We investigated patient reported goal achievement, overall satisfaction and objective outcome following the midurethral sling (MUS) procedure for female stress urinary incontinence (SUI). METHODS The study prospectively enrolled 88 SUI patients who underwent the MUS procedure between August 2006 and December 2006. Patient examination included medical history, physical examination and an urodynamic study prior to surgery. Before surgery, patients were shown a list and asked to nominate one goal which they most wanted to achieve with surgery (i.e., the target goal). The goals were classified as: symptom-related, daily life-related, personal relationship- and emotion-related, and others. Before and after the surgery, patients completed a Bristol Female Lower Urinary Tract Symptom-Short Form questionnaire. At 1 year postoperatively, patients were assessed in terms of achievement of the target goal, overall satisfaction and cure rate. RESULTS At the 1-year follow-up, overall target goals were achieved in 90.1% of patients, 82 (93.2%) patients were satisfied with the treatment, and 82 (93.2%) patients were cured. For most patients, the target goals were symptom-related (47 patients, 53.4%). The patients whose goal achievement was less than overall goal achievement were significantly less satisfied than those who fully achieved their goal, and goal achievement was also related to objective cure. CONCLUSION Achievement of patient goals was high and could be a good measure of surgical success following MUS for female SUI.
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Han DH, Lee HW, Sung HH, Lee HN, Lee YS, Lee KS. The Diagnostic Efficacy of 3-Dimensional Ultrasound Estimated Bladder Weight Corrected for Body Surface Area as an Alternative Nonurodynamic Parameter of Bladder Outlet Obstruction. J Urol 2011; 185:964-9. [PMID: 21247605 DOI: 10.1016/j.juro.2010.10.049] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2010] [Indexed: 10/18/2022]
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Kam G, Lee YS, Tan TT, Chow P, Ng HJ. Surgery-associated acquired haemophilia and response to combined rituximab and cyclosporine treatment. Haemophilia 2011; 17:715-6. [PMID: 21362110 DOI: 10.1111/j.1365-2516.2010.02458.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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147
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Lee HS, Yoo BC, Lee KS, Kim JH, Um SH, Ryu SH, Lee YS, Kim YS, Yoo K, Han JY, Hwang JS, Kim TH, Yang JM, Lee HJ, Chon CY, Cho M, Han BH, Hwang SG, Byun KS, Chung YH, Cho SH, Koh KC, Kim BI, Kim HC, Paik SW, Lee MS, Yoo HW, Han CJ. Clevudine-induced viral response, associated with continued reduction of HBsAg titer, was durable after the withdrawal of therapy. J Gastroenterol 2011; 46:410-4. [PMID: 21181212 DOI: 10.1007/s00535-010-0354-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2010] [Accepted: 11/13/2010] [Indexed: 02/04/2023]
Abstract
BACKGROUND This study was conducted to evaluate the durability of clevudine-induced viral response after the withdrawal of treatment. METHODS Patients who showed a complete response [alanine aminotransferase (ALT) normalization and hepatitis B virus (HBV) DNA <4,700 copies/mL for hepatitis B envelope antigen (HBeAg)-negative patients; ALT normalization, HBV DNA <4,700 copies/mL, and HBeAg seroconversion for HBeAg-positive patients] in the previous clevudine phase III trials were followed for an additional 96 weeks without any treatment for hepatitis B. RESULTS Of the 63 patients in the study cohort, 73% and 35% of the patients had HBV DNA <141,500 and <4,700 copies/mL, respectively, and 75% of the patients had normal ALT at the end of follow-up. HBeAg seroconversion was maintained in 81% of the patients and hepatitis B surface antigen (HBsAg) loss occurred in 3 patients. Continued HBsAg titer decrease (-0.5 log IU/mL) was observed in the sustained viral responders, suggesting the reduction of covalently closed circular DNA in hepatocytes. CONCLUSIONS The clevudine-induced viral response was durable in the majority of patients for 2 years after the withdrawal of treatment.
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Choi SU, Shin HW, Jung HI, Park JY, Yoon SZ, Lee YS, Kim WY, Chang SH. Control of the haemodynamic response to surgical stimuli in semi-closed circuit or closed circuit anaesthesia using a multifunctional anaesthesia system. J Int Med Res 2011; 38:1637-44. [PMID: 21309477 DOI: 10.1177/147323001003800508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
This study compared the ability of the Zeus multifunctional anaesthesia system to control haemodynamic response to surgical stimulation in semi-closed (SCA) or closed circuit anaesthesia (CCA) modes. Fifty patients undergoing gynaecological surgery were randomly assigned to SCA or CCA. Anaesthesia was induced with 2 mg propofol and 0.9 mg/kg rocuronium, intravenously, and maintained using sevoflurane (minimum alveolar concentration [MAC], 1.0) using 2 l/min oxygen plus 2 l/min nitrous oxide (SCA 4 l/min group) or 50% oxygen plus 50% nitrous oxide (CCA group). An increase in mean arterial pressure (MAP) > 20% above baseline in response to surgical stimulation provoked a stepwise increase in sevoflurane (1.3 MAC and then 1.6 MAC), followed by fentanyl 1 pg/kg intravenously (rescue drug). The time required for MAP to return to within 10% of baseline was significantly shorter in the CCA group (6.4 +/- 3.6 min) compared with the SCA 4 l/min group (10.2 +/- 6.0 min). The percentage of patients requiring fentanyl was significantly greater in the SCA 4 l/min group than in the CCA group. In conclusion, CCA controlled acute haemodynamic responses to surgical stimuli more successfully and rapidly than SCA 4 l/min, using a multifunctional anaesthesia machine.
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Hsieh D, McIver JW, Torchinsky DH, Gardner DR, Lee YS, Gedik N. Nonlinear optical probe of tunable surface electrons on a topological insulator. PHYSICAL REVIEW LETTERS 2011; 106:057401. [PMID: 21405434 DOI: 10.1103/physrevlett.106.057401] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2010] [Indexed: 05/23/2023]
Abstract
We use ultrafast laser pulses to experimentally demonstrate that the second-order optical response of bulk single crystals of the topological insulator Bi(2)Se(3) is sensitive to its surface electrons. By performing surface doping dependence measurements as a function of photon polarization and sample orientation we show that second harmonic generation can simultaneously probe both the surface crystalline structure and the surface charge of Bi(2)Se(3). Furthermore, we find that second harmonic generation using circularly polarized photons reveals the time-reversal symmetry properties of the system and is surprisingly robust against surface charging, which makes it a promising tool for spectroscopic studies of topological surfaces and buried interfaces.
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Park KA, Cho WI, Song KJ, Lee YS, Sung IS, Choi-Kwon SM. Assessment of nurses' nutritional knowledge regarding therapeutic diet regimens. NURSE EDUCATION TODAY 2011; 31:192-197. [PMID: 20621397 DOI: 10.1016/j.nedt.2010.05.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2009] [Revised: 04/14/2010] [Accepted: 05/25/2010] [Indexed: 05/29/2023]
Abstract
Metabolic diseases and cardiovascular disease (CVD), the incidence of which is currently increasing in Korea, can be managed well with dietary education and modification. However, it has yet to be established whether nurses have sufficient knowledge to impart appropriate nutritional counseling to patients with these diseases. Our study involved 506 nurses working at Asan Medical Center, Samsung Medical Center, and Seoul National University Hospital between March and May, 2006. The questionnaire was comprised of 42 diet-related questions pertaining to diabetes, obesity, and CVD. Nurses' correct-response rate for overall nutritional knowledge was worse than reported in Western countries (58.4%), and particularly so with regard to obesity and CVD. Although many nurses were aware of the therapeutic aspects of nutrients in relation to CVD, most of them had limited knowledge about low-cholesterol diets and sources of water-soluble fiber, fatty acids and the specific food items that prevent CVD. Our results suggest that there is an urgent need to update the contents of nutrition education for nurses to reflect the current changes in the Korean diet and the increasing incidence of metabolic diseases and CVD.
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