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  • 1
    Online Resource
    Online Resource
    SAGE Publications ; 2007
    In:  Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis Vol. 27, No. 4 ( 2007-07), p. 432-440
    In: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis, SAGE Publications, Vol. 27, No. 4 ( 2007-07), p. 432-440
    Abstract: Continuous ambulatory peritoneal dialysis (CAPD) is an established treatment for end-stage renal disease (ESRD). We investigated the outcome of CAPD over a period of 25 years at our institution. Methods CAPD has been performed in 2301 patients in 25 years. After excluding patients with less than 3 months of follow-up and missing data, we evaluated 1656 patients who started peritoneal dialysis between November 1981 and December 2005. Data for sex, age, primary disease, co-morbidities, follow-up duration, cause of death, and cause of technique failure were collected. We also examined data for urea kinetic modeling (UKM), beginning in 1990, and peritonitis episodes, including causative organisms, starting in 1992. Results Compared to incident patients from 1981 – 1992, mean age and incidence of ESRD caused by diabetic nephropathy increased in patients from 1993 to 2005. Technique survival after 5 and 10 years was 71.9% and 48.1% respectively. Technique survival was significantly higher in patients who started CAPD after 1992 than in those who started before 1992. Peritonitis was the main reason for technique failure. Overall peritonitis rate was 0.38 episodes per patient-year, with a significant downward trend to 0.29 per patient-year over 10 years, corresponding to a decrease in gram-positive peritonitis. Patient survival after 5 and 10 years was 69.8% and 51.8% respectively. Patient survival improved significantly during 1992 – 2005 compared to 1981 – 1992 after adjustment for age, gender, diabetes, and cardiovascular comorbidities [hazard ratio (HR) 0.68, p 〈 0.01]. Subgroup analysis based on UKM revealed that dialysis adequacy did not affect patient survival. However, diabetes (HR 2.78, p 〈 0.001), older age (per 1 year: HR 1.06; p 〈 0.001), serum albumin level (per 1 g/dL: increase, HR 0.52; p 〈 0.05), and cardiovascular comorbidities (HR 2.32, p 〈 0.01) were identified as significant risk factors. Conclusion Technique survival has improved due partly to a decrease in peritonitis, which was attributed to a decrease in gram-positive peritonitis. Patient survival has also improved considering increases in aged patients and ESRD caused by diabetes. The mortality rate of CAPD is still high in older, diabetic, malnourished, and cardiovascular diseased patients. A more careful management of higher risk groups will be needed to improve the outcome of CAPD patients in the future.
    Type of Medium: Online Resource
    ISSN: 0896-8608 , 1718-4304
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2007
    detail.hit.zdb_id: 2075957-5
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  • 2
    In: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis, SAGE Publications, Vol. 28, No. 2 ( 2008-03), p. 174-182
    Abstract: Long-term peritoneal dialysis (PD) is associated with the development of various structural and functional changes to the peritoneal membrane when bioincompatible conventional peritoneal dialysis fluids (PDFs) are used. In this study, we looked at patients that were treated with conventional PDFs and then changed to novel biocompatible PDFs with a neutral pH and a low concentration of glucose degradation products (GDPs) to investigate whether this change could result in the arrest or reversal of peritoneal membrane deterioration. Methods In an open label, randomized prospective trial, the clinical effects of conventional PDFs and biocompatible PDFs with neutral pH and very low concentration of GDPs were compared in 104 patients equally divided between both study PDFs. Blood and effluent dialysate samples, peritoneal equilibration tests, and adequacy evaluation were undertaken at baseline, 4, 8, and 12 months. The target variables were the ratio of dialysate-to-plasma (D/P) creatinine, peritoneal ultrafiltration, residual renal function, dialysis adequacy indices, and effluent cancer antigen 125 (CA125). Results D/P creatinine values were not different in the two groups. Peritoneal ultrafiltration was significantly higher in the low-GDP PDF group than in the conventional PDF group at all follow-up times (4 months: 9.1 ± 4.3 vs 6.0 ± 3.0; 8 months: 8.3 ± 3.4 vs 6.0 ± 3.0; 12 months: 8.9 ± 3.3 vs 6.1 ± 3.3 mL/g dextrose/day; p 〈 0.05). Peritoneal Kt/V urea values and total weekly Kt/V urea values at 4 months were significantly higher in the low-GDP PDF group than in the conventional PDF group. Residual renal function was not statistically significant. Effluent CA125 levels were significantly higher in the low-GDP PDF group at all follow-up visits (4 months: 37.8 ± 20.8 vs 22.0 ± 9.5; 8 months: 41.2 ± 20.3 vs 25.9 ± 11.3; 12 months: 40.4 ± 21.4 vs 28.6 ± 13.0 U/mL; p 〈 0.05). Among anuric patients, peritoneal ultrafiltration at 4, 8, and 12 months, total weekly Kt/V at 4 and 8 months, and CA125 levels at all follow-up visits were significantly higher in patients treated with low-GDP PDF than those treated with conventional PDF. However, among anuric patients, D/P creatinine showed no significant differences between the low-GDP PDF group and the conventional PDF group. Conclusion The use of biocompatible PDFs with neutral pH and low GDP concentration can contribute to improvement of peritoneal ultrafiltration and peritoneal effluent CA125 level, an indicator of peritoneal membrane integrity in PD patients.
    Type of Medium: Online Resource
    ISSN: 0896-8608 , 1718-4304
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2008
    detail.hit.zdb_id: 2075957-5
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  • 3
    In: Environmental Values, SAGE Publications, Vol. 26, No. 2 ( 2017-04-01), p. 223-249
    Abstract: Using the social-psychological literature on the antecedents of environmental behaviour and comparative data from Germany, India, Israel and South Korea, we test four value types that correspond with environmental behaviour. Our cross-national context represents varying social, economic, cultural and environmental configurations, giving credence to the effects of values. The authors collected survey data among students on a variety of environmental behaviours and on questions that comprise Schwartz's value scale. The results show similarities between the countries in the effect of biospheric values and differences in the effects of the other values tested. We also find that biospheric value is the most important value type for explaining environmental behaviour, and that biospheric values, universalism and benevolence - three key values that we analyse - have different effects on environmental behaviour, and therefore should be treated separately rather than in a unified self-transcendence value orientation. We finally demonstrate the importance of conformity in the analysis of environmental behaviour. Our conclusions point to the importance of further exploring the mechanism that links values and environmental behaviour while contextualising it in different national and cultural settings.
    Type of Medium: Online Resource
    ISSN: 0963-2719
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2017
    detail.hit.zdb_id: 2028055-5
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  • 4
    In: American Journal of Rhinology & Allergy, SAGE Publications, Vol. 27, No. 5 ( 2013-09), p. e135-e139
    Abstract: Allergic rhinitis (AR) is often accompanied by multiple ocular symptoms. This study aimed to evaluate the prevalence of ocular symptoms and the impact of ocular symptoms on the quality of life in patients with AR. Methods One thousand one hundred seventy-four patients with AR were enrolled from 24 centers in Korea. They were classified into four groups according to the Allergic Rhinitis and Its Impact on Asthma (ARIA) guideline and also classified into perennial AR (PAR) and seasonal AR groups. All patients were asked to complete the questionnaire regarding the presence of ocular symptoms, such as eye itching, watery eyes, and red eyes. The correlation between ocular symptoms and the rest of the quality-of-life areas in the Mini-Rhinoconjunctivitis Quality of Life Questionnaire (Mini-RQLQ) was also asked. Results Seven hundred nineteen (61.2%) of 1174 patients had ocular symptoms. In detail, the numbers of patients with eye itching, watery eyes, red eyes, and other ocular symptoms were 605 (51.5%), 313 (26.7%), 207 (17.6%), and 66 (5.6%), respectively. Female patients (72.5%) complained of ocular symptoms more commonly than male patients (55.1%). The patients with moderate–severe persistent AR showed the highest prevalence of ocular symptoms. The correlation coefficients between ocular symptoms and the rest of the quality-of-life areas in the Mini-RQLQ were statistically significant (p 〈 0.05). Conclusion Sixty-one percent of Korean AR patients experienced ocular symptoms. The patients who were women and had PAR and more severe AR showed higher prevalence of ocular symptoms. The ocular symptoms might have a significant impact on the quality of life in patients with AR.
    Type of Medium: Online Resource
    ISSN: 1945-8924 , 1945-8932
    RVK:
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2013
    detail.hit.zdb_id: 2554548-6
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  • 5
    In: International Journal of Stroke, SAGE Publications, Vol. 17, No. 8 ( 2022-10), p. 931-937
    Abstract: Very early stage blood pressure (BP) levels may affect outcome in stroke patients who have successfully undergone recanalization following intra-arterial treatment, but the optimal target of BP management remains uncertain. Aim We hypothesized that the clinical outcome after intensive BP-lowering is superior to conventional BP control after successful recanalization by intra-arterial treatment. Sample-size estimates We aim to randomize 668 patients (334 per arm), 1:1. Methods and design We initiated a multicenter, prospective, randomized, open-label trial with a blinded end-point assessment (PROBE) design. After successful recanalization (thrombolysis in cerebral infarction score ≥ 2 b), patients with elevated systolic BP level, defined as the mean of two readings ≥ 140 mmHg, will be randomly assigned to the intensive BP-lowering (systolic BP  〈  140 mm Hg) group or the conventional BP-lowering (systolic BP, 140−180 mm Hg) group. Study outcomes The primary efficacy outcomes are from dichotomized analysis of modified Rankin Scale (mRS) scores at three months (mRS scores: 0–2 vs. 3–6). The primary safety outcomes are symptomatic intracerebral hemorrhage and death within three months. Discussion The OPTIMAL-BP trial will provide evidence for the effectiveness of active BP control to achieve systolic BP  〈  140 mmHg during 24 h in patients with successful recanalization after intra-arterial treatment. Clinical trial registration ClinicalTrials.gov Identifier: NCT04205305.
    Type of Medium: Online Resource
    ISSN: 1747-4930 , 1747-4949
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2211666-7
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  • 6
    In: Journal of Cerebral Blood Flow & Metabolism, SAGE Publications, Vol. 36, No. 12 ( 2016-12), p. 2122-2133
    Abstract: Environmental enrichment (EE) with a complex combination of physical, cognitive and social stimulations enhances synaptic plasticity and behavioral function. However, the mechanism remains to be elucidated in detail. We aimed to investigate dopamine-related synaptic plasticity underlying functional improvement after EE. For this, six-week-old CD-1 mice were randomly allocated to EE or standard conditions for two months. EE significantly enhanced behavioral functions such as rotarod and ladder walking tests. In a [ 18 F]FPCIT positron emission tomography scan, binding values of striatal DAT were significantly decreased approximately 18% in the EE mice relative to the control mice. DAT inhibitor administrated to establish the relationship of the DAT down-regulation to the treatment effects also improved rotarod performances, suggesting that DAT inhibition recapitulated EE-mediated treatment benefits. Next, EE-induced internalization of DAT was confirmed using a surface biotinylation assay. In situ proximity ligation assay and immunoprecipitation demonstrated that EE significantly increased the phosphorylation of striatal DAT as well as the levels of DAT bound with protein kinase C (PKC). In conclusion, we suggest that EE enables phosphorylation of striatal DAT via a PKC-mediated pathway and causes DAT internalization. This is the first report to suggest an EE-mediated mechanism of synaptic plasticity by internalization of striatal DAT.
    Type of Medium: Online Resource
    ISSN: 0271-678X , 1559-7016
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2016
    detail.hit.zdb_id: 2039456-1
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  • 7
    In: Journal of Histochemistry & Cytochemistry, SAGE Publications, Vol. 58, No. 8 ( 2010-08), p. 731-740
    Abstract: The amount of amyloid detectable in islets varies, and is not always correlated with degree of β-cell loss. It has been hypothesized that islet amyloid polypeptide (IAPP) aggregation causes β-cell dysfunction. In this study, we investigated the relationship between IAPP expression and glucose homeostasis in pancreatectomized patients. Human pancreatic head tissues were collected from 46 pancreatic tumor patients. We divided the diabetic cases into two groups, patients with higher IAPP–expressing islets (DM-H) and patients with lower IAPP–expressing islets (DM-L), and compared both groups to patients with normal glucose tolerance (NGT). Interestingly, oral glucose tolerance test analyses showed that DM-L patients had significantly higher glucose levels and lower C-peptide levels than DM-H patients. Furthermore, the DM-H group showed a relative β-cell volume similar to that of the NGT group, as well as a significantly higher relative β-cell volume than the DM-L group. The DM-L group was significantly higher than the DM-H group, not only in the rates of replication and apoptosis, but also in the nuclear C/EBP homologous protein and the ratio of oligomer to IAPP. Thus, IAPP expression may not be an indicator of cell death induction. IAPP, including oligomer, may be an important determinant in the fate of islet β-cells. This manuscript contains online supplemental material at http://www.jhc.org . Please visit this article online to view these materials.
    Type of Medium: Online Resource
    ISSN: 0022-1554 , 1551-5044
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2010
    detail.hit.zdb_id: 1421306-0
    SSG: 12
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  • 8
    In: Annals of Otology, Rhinology & Laryngology, SAGE Publications, Vol. 122, No. 5 ( 2013-05), p. 339-343
    Abstract: The aims of the present study were twofold. We sought to compare two methods of titrating the level of continuous positive airway pressure (CPAP) — Auto-adjusting titration and titration using a predictive equation — With full-night manual titration used as the benchmark. We also investigated the reliability of the two methods in patients with obstructive sleep apnea syndrome (OSAS). Methods: Twenty consecutive adult patients with OSAS who had successful, full-night manual and auto-adjusting CPAP titration participated in this study. The titration pressure level was calculated with a previously developed predictive equation based on body mass index and apnea-hypopnea index. Results: The mean titration pressure levels obtained with the manual, auto-adjusting, and predictive equation methods were 9.0 ± 3.6, 9.4 ± 3.0, and 8.1 ± 1.6 cm H 2 O, respectively. There was a significant difference in the concordance within the range of ±2 cm H 2 O (p = 0.019) between both the auto-adjusting titration and the titration using the predictive equation compared to the full-night manual titration. However, there was no significant difference in the concordance within the range of ±1 cm H 2 O (p 〉 0.999). Conclusions: When compared to full-night manual titration as the standard method, auto-adjusting titration appears to be more reliable than using a predictive equation for determining the optimal CPAP level in patients with OSAS.
    Type of Medium: Online Resource
    ISSN: 0003-4894 , 1943-572X
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2013
    detail.hit.zdb_id: 2033055-8
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  • 9
    In: The American Surgeon, SAGE Publications, Vol. 78, No. 3 ( 2012-03), p. 309-317
    Abstract: A ruptured pseudoaneurysm is the most serious and life-threatening cause of post-pancreatoduodenectomy (PD) hemorrhages. We have evaluated the clinical course and management of pseudoaneurysms after PD. Of 586 patients who underwent PD for periampullary tumors in Asan Medical Center between March 2003 and March 2011, 27 experienced pseudoaneurysmal bleeding. Bleeding developed at a median of 21 days (range, 8 to 45 days) after surgery, including 9 patients who developed bleeding more than 4 weeks after surgery. Before development of bleeding, 26 patients showed pancreatic fistula. Bleeding was developed from the gastroduodenal artery stump in 12 patients, the common hepatic artery in eight, the proper hepatic artery in five, and the left hepatic artery in two. Of the angiographic group, 21 patients underwent with microcoil embolization, four underwent stent insertion, and one experienced technical failure. Only one patient required emergent laparotomy without angiography. Of 25 patients with angiographic procedures, all patients achieved hemostasis. The mortality rate was 22.2 per cent (6 patients). Delayed hemorrhage after PD is closely associated with pancreatic fistula and carried a significantly higher mortality rate. The patients with pancreatic fistula should be carefully monitored, even more than 4 weeks after surgery. Selective microcoil embolization or stent graft is effective for pseudoaneurysmal bleeding.
    Type of Medium: Online Resource
    ISSN: 0003-1348 , 1555-9823
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2012
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  • 10
    In: Cell Transplantation, SAGE Publications, Vol. 16, No. 6 ( 2007-07), p. 629-637
    Abstract: Glycogen storage disease type I (GSD-I) is a group of autosomal recessive disorders with an incidence of 1 in 100,000. The two major subtypes are GSD-Ia, caused by a deficiency of glucose-6-phosphatase (G6Pase), and GSD-Ib, caused by a deficiency of glucose-6-phosphate transporter (G6PT). We report that a substantial improvement was achieved following several infusions of hepatocytes in a patient with GSD-Ib. Hepatocytes were isolated from the unused cadaveric whole livers of two donors. At the first transplantation, approximately 2 × 109 cells (2% of the estimated recipient's total hepatocytes) were infused. Seven days later 1 × 109 (1% of liver mass) cryopreserved hepatocytes from the same donor were infused, and an additional 3 × 109 (3% of liver mass) cells from the second donor were infused 1 month after the second transplantation. After the hepatocyte transplantation, the patient showed no hypoglycemic symptoms despite the discontinuation of cornstarch meals. Liver biopsies on posttransplantation days 20 and 250 showed a normal level of glucose-6-phosphatase activity in presolubilization assay that was very low before transplantation. This was the first and successful clinical hepatocyte transplantation in Korea. In this study, hepatocyte transplantation allowed a normal diet in a patient with GSD-Ib, with substantial improvement in their quality of life. Hepatocyte transplantation might be an alternative to liver transplantation and dietary therapy in GSD-Ib.
    Type of Medium: Online Resource
    ISSN: 0963-6897 , 1555-3892
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2007
    detail.hit.zdb_id: 2020466-8
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