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Moon BS. A Control Algorithm Capable of Handling Steam Generator Water Level Swell and Shrinkage. NUCL SCI ENG 2017. [DOI: 10.13182/nse97-a24463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Byung Soo Moon
- Korea Atomic Energy Research Institute, P.O. Box 105, Yusong, Taejon, Korea 305-600
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Shin HW, Jang ES, Moon BS, Lee JJ, Lee DE, Lee CH, Shin CS. Anti-obesity effects of gochujang products prepared using rice koji and soybean meju in rats. J Food Sci Technol 2016; 53:1004-13. [PMID: 27162380 DOI: 10.1007/s13197-015-2162-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 12/09/2015] [Accepted: 12/22/2015] [Indexed: 01/18/2023]
Abstract
The Korean traditional hot sauce gochujang has been reported to have biological activities. Different kinds of gochujang products were prepared based on combinations of a fungal rice koji with two kinds of bacterial soybean mejus. Diets that included gochujang products were fed to rats and anti-obesity effects were investigated. Gochujang products reduced body weight gains, epididymal fat weights, and triglyceride levels in the serum and the liver. Effects were exerted by the diet that included the non-fermented gochujang mixture, increased using a fungal rice koji, and further enhanced using a bacterial soybean meju. Dietary effects were apparently induced via inhibition of the lipogenic enzymes fatty acid synthase, malic enzyme, and lipoprotein lipase by gochujang products in epididymal adipose tissues, and inhibition of glucose-6-phosphate dehydrogenase in the liver. High levels of capsaicin and genistein in gochujang products are considered to contribute to anti-obesity effects.
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Affiliation(s)
- H W Shin
- CJ CheilJedang Corp., Food Research Institute, Suwon-si, 443-270 South Korea ; Department of Biotechnology, Yonsei University, Seoul, 120-749 South Korea
| | - E S Jang
- CJ CheilJedang Corp., Food Research Institute, Suwon-si, 443-270 South Korea
| | - B S Moon
- CJ CheilJedang Corp., Food Research Institute, Suwon-si, 443-270 South Korea
| | - J J Lee
- Department of Food and Nutrition, Chosun University, Gwangju, 500-759 South Korea
| | - D E Lee
- Department of Bioscience and Biotechnology, Konkuk Univeristy, Seoul, 143-701 South Korea
| | - C H Lee
- Department of Bioscience and Biotechnology, Konkuk Univeristy, Seoul, 143-701 South Korea
| | - C S Shin
- Department of Biotechnology, Yonsei University, Seoul, 120-749 South Korea
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Park HS, Kim E, Moon BS, Lim NH, Lee BC, Kim SE. In Vivo Tissue Pharmacokinetics of Carbon-11-Labeled Clozapine in Healthy Volunteers: A Positron Emission Tomography Study. CPT Pharmacometrics Syst Pharmacol 2015. [PMID: 26225256 PMCID: PMC4452936 DOI: 10.1002/psp4.38] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We investigated clozapine (CLZ) tissue pharmacokinetics in vivo by using carbon-11-labeled CLZ (11C-CLZ) and positron emission tomography (PET). Eight healthy volunteers underwent 11C-CLZ studies wherein computed tomography image acquisition was followed by PET scans (whole-body, four; brain, four). After bolus intravenous 11C-CLZ injection, PET images were acquired at various timepoints for 2–3 hours. Tissue 11C-CLZ signals were plotted over time, and pharmacokinetic parameters were determined. High 11C-CLZ radioactivity was detected in the liver and brain, implying CLZ hepatic metabolism and efficient blood–brain barrier penetration. The urinary and hepatobiliary tracts were involved in 11C-CLZ excretion. Moderate to high radioactivity was observed in the dopaminergic and serotonergic receptor-rich brain regions, indicating CLZ binding to multiple receptor types. To our knowledge, this is the first study to report the determination of 11C-CLZ tissue pharmacokinetics in humans. PET using radiolabeled drugs can provide valuable information that could complement plasma pharmacokinetic data.
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Affiliation(s)
- H S Park
- Department of Nuclear Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital Seongnam, South Korea ; Smart Humanity Convergence Center, Department of Transdisciplinary Studies, Graduate School of Convergence Science and Technology, Seoul National University Seoul, South Korea ; Advanced Institutes of Convergence Technology Suwon, South Korea
| | - E Kim
- Department of Neuropsychiatry, Seoul National University College of Medicine, Seoul National University Bundang Hospital Seongnam, South Korea
| | - B S Moon
- Department of Nuclear Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital Seongnam, South Korea
| | - N H Lim
- Department of Nuclear Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital Seongnam, South Korea
| | - B C Lee
- Department of Nuclear Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital Seongnam, South Korea ; Advanced Institutes of Convergence Technology Suwon, South Korea
| | - S E Kim
- Department of Nuclear Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital Seongnam, South Korea ; Smart Humanity Convergence Center, Department of Transdisciplinary Studies, Graduate School of Convergence Science and Technology, Seoul National University Seoul, South Korea ; Advanced Institutes of Convergence Technology Suwon, South Korea
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Abstract
BACKGROUND Rifabutin has been known to be effective in multidrug-resistant Helicobacter pylori-harboring patients undergoing treatment failure for H. pylori infection. AIM To evaluate the efficacy of 7-day treatment regimen consisting rifabutin daily but increasing the dose of amoxicillin and lansoprazole in patients who have failed first and second eradication and to assess the side effect profiles in South Korea. METHODS From December 2007 to May 2013, 59 H. pylori-infected patients with two previous eradication failures were enrolled for this study prospectively. The eligible patients were randomly assigned to either group A or B. Group A received lansoprazole 30 mg bid, amoxicillin 1.0 g tid and rifabutin 150 mg bid during 7 days, whereas group B received lansoprazole 60 mg bid, amoxicillin 1.0 g tid and rifabutin 150 mg bid during 7 days. RESULTS In group A, H. pylori eradication was achieved in 25 (78.1%) of the 32 patients in the ITT analysis and in 25 (80.6%) of the 31 patients in the PP analysis. In group B, H. pylori eradication was achieved in 26 (96.3%) of the 27 patients in the ITT analysis and in 27 (100%) of the 26 patients in the PP analysis. There was statistically significant difference between the two groups in terms of the eradication rates in PP analysis (p = .047), whereas a marginally statistical significance was found in terms of the eradication rates in ITT analysis (p = .051). Reported side effects were mild, and treatment was well tolerated. No major changes in physical examination or in standard laboratory parameters were observed after treatment. CONCLUSIONS Rifabutin-based high-dose proton-pump inhibitor (PPI)-combined therapy as empirical rescue treatment is more effective than standard dose PPI-combined rifabutin-based therapy, safe and best tolerable in third-line therapy in the Korean population. The key to successful rescue therapy with rifabutin-amoxicillin-PPI regimen may be to increase doses of PPI.
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Affiliation(s)
- Hyun Chul Lim
- Department of Internal Medicine, Division of Gastroenterology, Yonsei University College of MedicineSeoul, South Korea
| | - Yong Jae Lee
- Department of Family Medicine, Yonsei University College of MedicineSeoul, South Korea
| | - Byoungrak An
- Department of Laboratory Medicine, Yonsei University College of MedicineSeoul, South Korea
| | - Seung Woo Lee
- Department of Internal Medicine, Division of Gastroenterology, Yonsei University College of MedicineSeoul, South Korea
| | - Yong Chan Lee
- Department of Internal Medicine, Division of Gastroenterology, Yonsei University College of MedicineSeoul, South Korea
| | - Byung Soo Moon
- Department of Internal Medicine, Division of Gastroenterology, Yonsei University College of MedicineSeoul, South Korea
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An B, Moon BS, Lim HC, Lee YC, Kim H, Lee G, Kim SH, Park M, Kim JB. Analysis of Gene Mutations Associated with Antibiotic Resistance inHelicobacter pyloriStrains Isolated from Korean Patients. Korean J Helicobacter Up Gastrointest Res 2014. [DOI: 10.7704/kjhugr.2014.14.2.95] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Byoungrak An
- Department of Laboratory Medicine, Yongin Severance Hospital, Yongin, Korea
| | - Byung Soo Moon
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Hyun Chul Lim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Yong Chan Lee
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Heejung Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Gyusang Lee
- Department of Biomedical Laboratory Science, College of Health Science, Yonsei University, Wonju, Korea
| | - Sa-Hyun Kim
- Department of Biomedical Laboratory Science, College of Health Science, Yonsei University, Wonju, Korea
| | - Min Park
- Department of Biomedical Laboratory Science, College of Health Science, Yonsei University, Wonju, Korea
| | - Jong Bae Kim
- Department of Biomedical Laboratory Science, College of Health Science, Yonsei University, Wonju, Korea
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An B, Moon BS, Kim H, Lim HC, Lee YC, Lee G, Kim SH, Park M, Kim JB. Antibiotic resistance in Helicobacter pylori strains and its effect on H. pylori eradication rates in a single center in Korea. Ann Lab Med 2013; 33:415-9. [PMID: 24205490 PMCID: PMC3819440 DOI: 10.3343/alm.2013.33.6.415] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 07/18/2013] [Accepted: 08/20/2013] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Clarithromycin, amoxicillin, metronidazole, tetracycline, and levofloxacin have been commonly used for the eradication of Helicobacter pylori. We compared the change in antibiotic resistance of H. pylori strains during two separate periods and investigated the effect of antibiotic resistance on H. pylori eradication. METHODS H. pylori strains were isolated from 71 patients between 2009 and 2010 and from 94 patients between 2011 and 2012. The distribution of minimal inhibitory concentration (MIC) of 5 antibiotics was assessed using the agar dilution method, and H. pylori eradication based on the antimicrobial susceptibility of the isolates was investigated retrospectively. RESULTS Antibiotic resistance rate against clarithromycin, amoxicillin, tetracycline, metronidazole, and levofloxacin for the 2009-2010 isolates were 7.0% (5/71), 2.8% (2/71), 0% (0/71), 45.1% (32/71), and 26.8% (19/71), respectively, and for the 2011-2012 isolates were 16.0% (15/94), 2.1% (2/94), 0% (0/94), 56.3% (53/94), and 22.3% (21/94), respectively. Multi-drug resistance for 2 or more antibiotics increased slightly from 16.9% (12/71) in the 2009-2010 isolates to 23.4% (22/94) in the 2011-2012 isolates. In follow-up testing of 66 patients, first-line treatment successfully eradicated H. pylori in 50 patients (75.8%) and failed in 4 of 7 patients (57.1%) in a clarithromycin-resistant and amoxicillin-susceptible group. CONCLUSIONS We observed an increase in resistance to clarithromycin and an overall increase in multi-drug resistance during the 2 study periods. The effectiveness of the eradication regimen was low with combinations of clarithromycin and amoxicillin, particularly in the clarithromycin-resistant group. Thus, eradication of H. pylori depends upon periodic monitoring of antimicrobial susceptibility.
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Affiliation(s)
- Byoungrak An
- Department of Laboratory Medicine, Yongin Severance Hospital, Yongin, Korea
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An B, Lee G, Lim K, Moon BS, Kim JB. Identification of the repeated number of C and D regions of tyrosine phosphorylation motifs in Helicobacter pylori cagA using multiplex PCR. Microbiol Immunol 2008; 52:479-83. [PMID: 18822081 DOI: 10.1111/j.1348-0421.2008.00064.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Various tyrosine phosphorylation motif regions of H. pylori cagA exist. The number of these regions was found to have some influence on cell signaling, which was found to be more pronounced when in D (ESS) region than in C (WSS) region. A molecular biological method with multiplex PCR was developed to distinguish C and D regions, and to identify the repetition number of tyrosine phosphorylation of the cagA gene. Multiplex PCR using novel primer sets was performed on 73 strains of H. pylori isolated from Korean patients with upper gastrointestinal diseases. The Western cagA was identified in only 3 strains (4.1%) whereas East Asia cagA was identified in 69 strains (94.5%). These results were reconfirmed through a sequencing analysis. The method developed in this study would be useful for monitoring the repeated number of C and D regions of tyrosine phosphorylation motifs in H. pylori cagA.
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Affiliation(s)
- Byungrak An
- Department of Biomedical Laboratory Science, College of Health Science, Yonsei University, Wonju, Korea
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Kim HM, Chon CY, Ahn SH, Jung SJ, Han KH, Moon BS, Moon YM. Fatal spontaneous bacterial peritonitis by Leclercia adecarboxylata in a patient with hepatocellular carcinoma. Int J Clin Pract 2008; 62:1296-8. [PMID: 18705825 DOI: 10.1111/j.1742-1241.2005.00780.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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Park JY, Park YN, Kim DY, Paik YH, Lee KS, Moon BS, Han KH, Chon CY, Ahn SH. High prevalence of significant histology in asymptomatic chronic hepatitis B patients with genotype C and high serum HBV DNA levels. J Viral Hepat 2008; 15:615-21. [PMID: 18573162 DOI: 10.1111/j.1365-2893.2008.00989.x] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Current treatment guidelines suggest that antiviral therapy be considered for chronic hepatitis B (CHB) patients with high viral load if a biopsy shows significant liver disease despite alanine aminotransferase (ALT) levels two times or less than the upper limit of normal (ULN). We evaluated the histological findings in CHB patients with high viral load and persistently normal or slightly elevated serum ALT levels. Between January 2003 and June 2006, 105 consecutive treatment-naive patients with CHB who underwent ultrasonography-guided percutaneous liver biopsy, had detectable serum HBV DNA (>10(5) copies/mL) in a direct hybridization assay and normal or slightly elevated serum ALT levels (≤2 × ULN) for at least 12 months were included in a prospective study. Histological assessment was based on the METAVIR scoring system. Significant histology was defined as fibrosis stage ≥F2 or necroinflammation grade ≥A2. Among the 105 CHB patients with high viral load and persistently normal or slightly elevated serum ALT levels for at least 12 months, significant fibrosis (F2-F4 fibrosis) was observed in 63 patients (60.0%) and the actual significant histology was found in 65 patients (61.9%). On multivariate analysis, serum ALT levels and age at which they entered the study were independent factors associated with significant histology. Odds ratios for significant histology increased progressively according to serum ALT levels and age. In conclusion, a large proportion of CHB patients with genotype C, high viral load and ALT ≤2 × ULN had significant liver disease on liver biopsy and should be considered for antiviral therapy.
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Affiliation(s)
- J Y Park
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
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Kim BK, Han KH, Park YN, Park MS, Kim KS, Choi JS, Moon BS, Chon CY, Moon YM, Ahn SH. Prediction of microvascular invasion before curative resection of hepatocellular carcinoma. J Surg Oncol 2008; 97:246-52. [PMID: 18095300 DOI: 10.1002/jso.20953] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND The accurate staging of hepatocellular carcinoma (HCC) is important in establishing treatment strategies and prognosis. Among tumor factors, microvascular invasion, one of TNM staging components and prognostic factors, is underestimated preoperatively, due to inaccuracy of imaging modalities. We investigated preoperative predictors of microvascular invasion. METHODS We reviewed 190 consecutive HCC patients given curative resection from 1999 to 2006. All were treatment-naive and monitored every 3 months after resection. Tumor recurrence, survivals, and clinicopathological factors associated with microvascular invasion were analyzed. RESULTS The 5-year disease-free survival (DFS) rate was 39.4%(median follow-up duration: 35 months). On resection pathology, 38.9% (74/190 patients) had microvascular invasion undetected preoperatively, using liver spiral computed tomography (CT) or angiography. Independent predictors of microvascular invasion were tumor size (P = 0.043), number (P = 0.011), and Edmondson grade (P = 0.001). Patients with Edmondson grade 1 and size <5 cm had no microvascular invasion, while those with grade > or =2 had higher incidences (7/18 patients, 38.8%) even in small tumor (<2 cm). When tumors recurred, presence of microvascular invasion independently increased incidences of multiple tumors, portal vein invasion, and diffuse-infiltrative patterns significantly. CONCLUSIONS Preoperative predictors of microvascular invasion are tumor size, number, and Edmondson grade, which may be useful for making clinical decisions in both non-surgical and surgical candidates.
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Affiliation(s)
- Beom Kyung Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
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Kim BK, Park JY, Kim DY, Kim JK, Kim KS, Choi JS, Moon BS, Han KH, Chon CY, Moon YM, Ahn SH. Persistent hepatitis B viral replication affects recurrence of hepatocellular carcinoma after curative resection. Liver Int 2008; 28:393-401. [PMID: 18028321 DOI: 10.1111/j.1478-3231.2007.01625.x] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Elevated serum hepatitis B virus (HBV) DNA increases the development of hepatocellular carcinoma (HCC). Rather than instantaneous DNA level, the duration of persistent HBV replication is more important in carcinogenesis. Nevertheless, most investigators evaluated the DNA level at study entry. We assessed the effects of persistently detectable serum HBV DNA on HCC recurrence. PATIENTS AND METHODS We included 230 consecutive patients undergoing curative resection between 2000 and 2006. Patients who had antiviral therapy (at diagnosis or during follow-up), fluctuating DNA (cut-off value: 100,000 copies/ml) or recurrence within 12 months of resection were excluded. Ultimately, 157 were enrolled: 89 (non-viraemia group) had consistently negative DNA (<100,000 copies/ml), while 68 (viraemia group) had consistently positive DNA (>100 000copies/ml). Serum DNA level, biochemical tests, alpha-foetoprotein (AFP) and liver dynamic computed tomography were obtained every 3 months after surgery. RESULTS There were no significant differences in age, gender, liver function, histology, AFP, tumour stages or follow-up duration between the two groups. During follow-up (median: 35 months), patients in the non-viraemia group had a lower 5-year cumulative recurrence rate (54.7%) than those in the viraemia group (72.9%; P=0.043). In multivariate analysis, sustained viraemia (P=0.041) increased recurrence independently. CONCLUSIONS Persistent viraemia increased recurrence independently after surgery. To prevent long-term recurrences, antiviral therapy should be initiated in those with detectable serum HBV DNA.
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Affiliation(s)
- Beom Kyung Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
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Choi JW, Lee JH, Moon BS, Baek KH. Semi-automated disk-type solid-phase extraction method for polychlorinated dibenzo-p-dioxins and dibenzofurans in aqueous samples and its application to natural water. J Chromatogr A 2007; 1157:17-22. [PMID: 17499259 DOI: 10.1016/j.chroma.2007.04.064] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2006] [Revised: 04/15/2007] [Accepted: 04/17/2007] [Indexed: 10/23/2022]
Abstract
A disk-type solid-phase extraction (SPE) method was used for the extraction of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in natural water and tap water. Since this SPE system comprised airtight glass covers with a decompression pump, it enabled continuous extraction with semi-automation. The disk-type SPE method was validated by comparing its recovery rates of spiked internal standards with those of the liquid-liquid extraction (LLE). The recovery ranges of both methods were similar in terms of (13)C-labeled internal standards: 64.3-99.2% for the LLE and 52.4-93.6% for the SPE. For the native spike of 1,3,6,8-tetrachlorinated dibenzo-p-dioxin (TCDD) and octachlorinated dibenzo-p-dioxin (OCDD), the recoveries in the SPE were in the normal range of 77.9-101.1%. However, in the LLE, the recoveries of 1,3,6,8-TCDD decreased significantly. One of the reasons for the low recovery is that the solubility of this congener is high. The semi-automated SPE method was applied to the analysis of different types of water: river water, snow, sea water, raw water for drinking purposes, and tap water. PCDD/F congeners were found in some sea water and snow samples, while their concentrations in the other samples were below the limits of detection (LODs). This SPE system is appropriate for the routine analysis of water samples below 50L.
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Affiliation(s)
- J W Choi
- Water Analysis & Research Center, K-water, 6-2 San, Yeonchuk-dong, Daeduck-gu, Daejeon 306-711, South Korea.
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Paik YH, Lee KS, Han KH, Song KH, Kim MH, Moon BS, Ahn SH, Lee SJ, Park HJ, Lee DK, Chon CY, Lee SI, Moon YM. Comparison of rifaximin and lactulose for the treatment of hepatic encephalopathy: a prospective randomized study. Yonsei Med J 2005; 46:399-407. [PMID: 15988813 PMCID: PMC2815818 DOI: 10.3349/ymj.2005.46.3.399] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Rifaximin has been reported to be effective for the treatment of hepatic encephalopathy (HE) in Europe. However, it is unknown whether Rifaximin is effective for the treatment of HE in Koreans, therefore we conducted a open-label prospective randomized study to evaluate the efficacy of rifaximin versus lactulose in Korean patients. Fifty-four patients with liver cirrhosis and hepatic encephalopathy were enrolled. Thirty-two patients were randomized to receive rifaximin and 22 to receive lactulose both over a 7-day periods. Before and at the end of treatment, gradation of blood ammonia, flapping tremor, mental status, number connection test (NCT) were performed and estimation of HE indexes determined. Both rifaximin and lactulose were effective in the majority of patients (84.4% and 95.4%, respectively, p = 0.315). Blood NH3, flapping tremor, mental status, and NCT was significantly improved by rifaximin and lactulose, and the post- treatment levels of these measures were similar for the rifaximin and lactulose-treated groups, as was the HE index (rifaximin group (10.0 --> 4.2, p = 0.000); lactulose group (11.3 --> 5.0, p = 0.000)). One patient treated with rifaximin complained of abdominal pain, which was easily controlled. There was no episode of renal function impairment in either treatment group. Rifaximin proved to be as safe and as effective as lactulose for the treatment of Korean patients with hepatic encephalopathy.
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Affiliation(s)
- Yong-Han Paik
- Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Kwan Sik Lee
- Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Kwang-Hyub Han
- Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Kun Hoon Song
- Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Myoung Hwan Kim
- Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Byung Soo Moon
- Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Sang Hoon Ahn
- Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Se Joon Lee
- Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Hyo Jin Park
- Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Dong Ki Lee
- Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Chae Yoon Chon
- Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Sang In Lee
- Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Young Myoung Moon
- Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
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So HS, Oh J, Chung YT, Moon YJ, Kim DH, Moon BS, Lee HS, Baek SW, Park C, Lim YS, Kim MS, Park R. The water extract of Samultang protects the lipopolysaccharide (LPS)/phorbol 12-myristate 13-acetate (PMA)-induced damage and nitric oxide production of C6 glial cells via down-regulation of NF-kappaB. ACTA ACUST UNITED AC 2001; 34:303-10. [PMID: 11368885 DOI: 10.1016/s0306-3623(00)00073-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Samultang has been traditionally used for treatment of ischemic heart and brain diseases in oriental medicine. However, little is known about the mechanism by which Samultang rescues the myocardial and neuronal cells from ischemic damage. This study was designed to evaluate whether the water extract of Samultang may modulate the production of nitric oxide (NO) in LPS and PMA treated-C6 glial cells to protect the cells from NO-induced cytotoxicity. C6 glial cells treated with both LPS and PMA significantly produced a large amount of NO compared to untreated, PMA, or LPS-treated cells. In parallel with NO production, cotreatment of LPS and PMA induced the severe apoptotic death of C6 glial cells. However, Samultang significantly reduced both cell death and NO production by LPS/PMA in a dose-dependent manner. In addition, the modulatory effects of Samultang on LPS/PMA-induced cytotoxicity and NO production could be mimicked by exogenous treatments of N(G)MMA, a nitric oxide synthase (NOS) inhibitor, and pyrrolidine dithiocarbamate (PDTC), a strong NF-kappaB inhibitor. Treatment of C6-glial cells with LPS/PMA induced the transcriptional activation of NF-kappaB, which was markedly inhibited by Samultang. Taken together, we suggest that the protective effects of Samultang against LPS/PMA-induced cytotoxicity may be mediated by the suppression of NO synthesis via down-regulation of NF-kappaB activation.
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Affiliation(s)
- H S So
- Department of Microbiology, Wonkwang University, Iksan, Chonbuk 570-749, South Korea
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Lee J, Kim MS, So HS, Park C, Lim YS, Moon BS, Lee HS, Kim HJ, Park R. Protective effects of Debo on zinc-induced apoptosis of C6 glial cells via modulation of intracellular antioxidant, reduced glutathione. Immunopharmacol Immunotoxicol 2001; 23:383-96. [PMID: 11694029 DOI: 10.1081/iph-100107338] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In the present study, the mechanical basis of a traditional herbal prescription, Debo. on cytotoxic damage of the brain cells including C6 glial and PC12 cells has been studied. Traditionally, Debo has been employed for the purpose of preventing responses to trauma, ischemia, and other diseases in the nervous system. C6 glial cells were exposed to oxidative stress through the imployment of ZnCl2, and generates H2O2 and hydroxyl radicals by fenton reaction. ZnCl2-induced death of C6 glial cells, which was revealed as apoptosis by chromatin condensation as well as DNA fragmentation. Pretreatment of Debo significantly prevented apoptotic death of C6 glial cells via inhibition of H2O, generation as well as the recovering of an antioxidant, reduced glutathione (GSH). Also, deprivation of serum and glucose, found in ischemia, deceased the viability of PC12 cells up to 60% via generation of H2O2. However, Debo significantly protected cells from ischemic damage through decrease in H2O, generation. Furthermore, Debo markedly inhibited the transcriptional activation of NF-kappaB by ZnCI, in C6 glial cells. These results suggest that Debo may function as an antioxidant system against free radicals and be applicable to protect brain cells against oxidative or ischemic stresses.
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Affiliation(s)
- J Lee
- Department of Microbiology, School of Medicine, Professional Graduate School of Oriental Medicine, Wonkwang University, Iksan, Chonbuk, South Korea
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16
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Kim MS, Lee J, So HS, Lee KM, Moon BS, Lee HS, Park R. Danchunhwan water extract prevents apoptotic death by peroxynitrite and nitric oxide in human dopaminergic neuroblastoma SH-SY5Y cells. Immunopharmacol Immunotoxicol 2001; 23:239-52. [PMID: 11417851 DOI: 10.1081/iph-100103863] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In the present study, the protective effects of Danchunhwan on the cytotoxicity by peroxynitrite and nitric oxide (NO) were investigated in human dopaminergic neuroblastoma SH-SYSY cells. Danchunhwan has been used to treat infarction and cerebrovascular diseases in Oriental medicine for centuries. Cells were pretreated with Danchunhwan and exposed to sodium nitroprusside (SNP), an NO donor, and 3-morpholinosydnonimine (SIN-1) which simultaneously generates NO and superoxide, thus possibly forming peroxynitrite. Exposure of cells to SIN-1 for 24 hr induced 75% of apoptotic cell death, as evaluated by ladder-pattern fragmentation of genomic DNA and characteristic of apoptosis using 4', 6-diamidino-2-phenylinol (DAPI). However, pretreatment of SH-SY5Y cells with Danchunhwan inhibited the apoptotic cell death in a dose-dependent manner. Even though Danchunhwan was washed out after preincubation for 12 hr, cells were still remained to be resistant against cytotoxicity of SIN-1. It also inhibited SIN-1-induced activation of caspase 3-like protease in a dose-dependent fashion. Furthermore, Danchunhwan recovered the levels of intracellular antioxidant system, reduced glutathione (GSH) (83%), which was decreased by the addition of SIN-1 (63%). Taken together, we suggest that Danchunhwan protects human neuroblastoma SH-SY5Y cells from apoptotic death by free radicals including peroxynitrite and NO via generation of antioxidant, GSH.
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Affiliation(s)
- M S Kim
- Department of Microbiology, Wonkwang University School of Medicine, Chonju Chonbuk, South Korea
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17
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Abstract
OBJECTIVE The production of reactive oxygen species is increased in diabetic patients, especially in those will poor glycemic control. We have investigated oxidative damage in type 2 diabetic patients using serum 8-hydroxyguanine (8-OHG) as a biomarker. RESEARCH DESIGN AND METHODS We studied 41 type 2 diabetic patients and compared them with 3 nondiabetic control subjects. Serum 8-OHG concentration was assayed using high-pressure liquid chromatography. RESULTS The type 2 diabetic patients had significantly higher concentrations of 8-OHG in their serum than the control subjects (5.03 +/- 0.69 vs. 0.96 +/- 0.15 pmol/ml P < 0.01). There was no association between the levels of 8-OHG and HbA1c. We also could not and any correlation between serum 8-OHG levels and age, duration of diabetes, serum lipids, or creatinine or albumin exeretion rate. Creatinine clearance showed marginal correlation with serum 8-OHG levels (P = 0.06). Among the diabetic patients, those with proliferative retinopathy had significantly higher 8-OHG levels than those with nonproliferative retinopathy or without retinopathy. Likewise, the serum 8-OHG levels in patients who had advanced nephropathy (azotemia) were higher than in patients with normoalbuminuria, microalbuminuria, or overt proteinuria. CONCLUSIONS Our findings show that measuring serum 8-OHG is a novel convenient method for evaluating oxidative DNA damage. Diabetic patients, especially those with advanced microvascular complications, had significantly higher serum 8-OHG levels; this suggests that such changes may contribute to the development of microvascular complications of diabetes.
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Affiliation(s)
- C S Shin
- Department of Internal Medicine, the Institute of Endocrinology, Nutrition and Metabolism Research, Seoul National University College of Medicine, Korea
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Lee JH, Chon CY, Ahn SH, Moon BS, Kim JH, Paik YH, Han KH, Lee JT, Lee DY, Moon YM. An ischemic skin lesion after chemoembolization of the right internal mammary artery in a patient with hepatocellular carcinoma. Yonsei Med J 2001; 42:137-41. [PMID: 11293493 DOI: 10.3349/ymj.2001.42.1.137] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
A huge nodular hepatocellular carcinoma located at the anterior superior portion of the left lobe in a patient with hepatocellular carcinoma was treated with transcatheter arterial chemoembolization through the left hepatic artery. Three months later, however, there was a re-elevation of the serum alpha-fetoprotein level and evidence of a marginal recurrence at the left side of the previously embolized tumor was noted on the postembolization computed tomographic scan. Although the hepatic artery was intact in the second hepatic arteriography, we found that the right internal mammary artery was feeding the recurred hepatocellular carcinoma. This internal mammary artery was successfully treated with Lipiodol-transcatheter arterial chemoembolization. However, an ischemic lesion occurred in the skin of the anterior chest and abdominal wall several days after internal mammary artery embolization. We report here a very rare case of ischemic skin lesion on the anterior chest and abdominal wall following transcatheter arterial chemoembolization of the right internal mammary artery. This internal mammary artery was embolized because it had developed a collateral tumor feeding vessel following the initial chemoembolization of a hepatocellular carcinoma.
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Affiliation(s)
- J H Lee
- Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
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Kim HM, Shin HY, Jeong HJ, An HJ, Kim NS, Chae HJ, Kim HR, Song HJ, Kim KY, Baek SH, Cho KH, Moon BS, Lee YM. Reduced IL-2 but elevated IL-4, IL-6, and IgE serum levels in patients with cerebral infarction during the acute stage. J Mol Neurosci 2000; 14:191-6. [PMID: 10984195 DOI: 10.1385/jmn:14:3:191] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2000] [Accepted: 03/27/2000] [Indexed: 11/11/2022]
Abstract
Cytokines in the central nervous system (CNS) may play an important role in functioning as intercellular signals that orchestrate the response to injury. Whether this is a cause or result of the brain disease process is uncertain. We investigated IFN-gamma, IL-2, IL-4, IL-6, and IgE in the sera of 38 patients with cerebral infarction during the acute stage and 10 normal controls using an originally devised sensitive sandwich enzyme-linked immunosorbent assay (ELISA). We found that serum levels of IL-2 derived from T helper 1 (Th1) cells were slightly reduced in patients with cerebral infarction, whereas serum levels of IL-4 and IL-6 derived from Th2 cells were elevated significantly. IL-4 induces synthesis of IgE in human B cells. Endogenous IL-6 plays an obligatory role in IL-4-dependent human IgE synthesis. We observed that serum IgE levels were elevated significantly in patients with cerebral infarction. However, serum IFN-gamma levels were not elevated significantly in cerebral infarction patients. These findings suggest that elevated IL-4, IL-6, and IgE levels in the human serum may be an important factor in cerebral infarction during the acute stage. Decrease of IL-2 levels in the serum of patients with cerebral infarction may be a regulatory mechanism.
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Affiliation(s)
- H M Kim
- Department of Oriental Pharmacy, College of Pharmacy, Center of Oriental Medicinal Science, Wonkwang University, Iksan-city, Chonbuk, South Korea
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20
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Oh J, So HS, Park R, Ryu DK, Moon BS, Park OK, Chung YT. The water extract of Jagamchotang protects the ischemia/reperfusion-induced cytotoxicity of rat neonatal myocardial cells via generation of nitric oxide. Immunopharmacol Immunotoxicol 2000; 22:297-315. [PMID: 10952033 DOI: 10.3109/08923970009016422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Jagamchotang has been used for treatment of ischemic myocardial diseases in Chinese traditional medicine. However, little is known about the mechanism by which Jagamchotang rescues myocardial cells from ischemic damages. To elucidate the protective mechanisms, the effects of Jagamchotang on ischemia/reperfusion-induced cytotoxicity and generation of nitric oxide (NO) are investigated in primary neonatal myocardial cells. Ischemia/reperfusion itself induces severe myocardial cell death in vitro. However, treatment of the cells with Jagamchotang significantly reduces both ischemia/reperfusion-induced myocardial cell death and LDH release. In addition, pretreatment of Jagamchotang before reperfusion recovers the lose of beating rates after ischemia/reperfusion. For a while, the water extract of Jagamchotang stimulates myocardial cells in ischemic condition to produce nitric oxide (NO) in a dose dependent manner and it protects the damage of myocardial cells. Furthermore, the protective effects of the water extract of Jagamchotang is mimicked by treatment of sodium nitroprusside, an exogenous NO donor. NG-monomethyi-L-argine (NGMMA), a specific inhibitor of nitric oxide synthase (NOS), significantly blocks the protective effects of Jagamchotang on the cells after ischemia/reperfusion. Taken together, we suggest that the protective effects of Jagamchotang against ischemia/reperfusion-induced myocardial damages may be mediated by NO production during ischemic condition.
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Affiliation(s)
- J Oh
- Department of Anatomy, Wonkwang University School of Medicine, Iksan, Chonbuk, South Korea
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Kim MS, So HS, Park JS, Lee KM, Moon BS, Lee HS, Kim TY, Moon SK, Park R. Hwansodan protects PC12 cells against serum-deprivation-induced apoptosis via a mechanism involving Ras and mitogen-activated protein (MAP) kinase pathway. Gen Pharmacol 2000; 34:227-35. [PMID: 11282216 DOI: 10.1016/s0306-3623(00)00065-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Hwansodan has been used as a prescription for senile and vascular dementia in Oriental medicine. We investigated the neuroprotective effects of Hwansodan water extract on the apoptotic death of PC12 cells by serum deprivation. Hwansodan significantly rescued PC12 cells from apoptotic death by serum deprivation in a dose-dependent manner. The nuclear staining of PC12 cells clearly showed that Hwansodan attenuated nuclear condensation and fragmentation, which represents typical neuronal apoptotic characteristics. Hwansodan also prevents DNA fragmentation and caspase-3-like protease activation in serum-deprived PC12 cells and induces the tyrosine phosphorylation of proteins around 44 kDa, which was identified as ERK1 with electrophoretic gel mobility shift by Western blot. In addition, MEK inhibitor PD98059 and Ras inactivator, alpha-hydroxyfarnesylphosphonic acid and mevastatin, attenuated the neuroprotective effects of Hwansodan in serum-deprived PC12 cells. These results indicate that Ras/MEK/ERK signaling pathway plays a role in neuroprotective effects of Hwansodan in serum-deprived PC12 cells.
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Affiliation(s)
- M S Kim
- Department of Microbiology, Wonkwang University School of Medicine, Iksan, Chonbuk 570-749, Republic of Korea
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Abstract
Stress fractures in children are rare compared with the incidence in adults. This report describes an 11-year-old girl with stress fractures of the acromion, clavicle, and first rib on the left and contralateral fractures of the first and second ribs. It was eventually discovered that these fractures were caused by a nervous tic consisting of repetitive, vigorous shrugging and translation of the shoulders.
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Affiliation(s)
- B S Moon
- Department of Orthopedic Surgery, Nemours Children's Clinic, Orlando, Florida, USA
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Abstract
The purpose of this research was to investigate functional studies by which the hiatal hernia (HH) may be relevant to a reflux esophagitis (RE). Group I consisted of healthy controls who were endoscopically normal (n = 21). Group II consisted of patients with hiatal hernia but no reflux esophagitis (n = 8). Group III had patients with hiatal hernia with reflux esophagitis (n = 9). Group IV had patients with reflux esophagitis but no hiatal hernia (n = 16). Esophageal manometry, ambulatory 24 hour intraesophageal pH monitoring, acid clearance test, and gastric emptying scan were performed in each of the patients. The contraction amplitude at 3 cm above the lower esophageal sphincter did not differ significantly among the four groups, but the mean lower esophageal sphincter pressure was significantly decreased in group II. The DeMeester score in ambulatory 24 hour intraesophageal pH monitoring was significantly higher in group III compared with the controls. No significant difference among the groups was found with respect to acid clearance. Total and proximal gastric emptying times (T1/2) were significantly delayed in group III. We found that hiatal hernia combined with delayed gastric emptying may bear a relationship to the multifactorial origins of reflux esophagitis, and we suggest a rationale for using prokinetic agents as the therapeutic regimen in patients with HH complicated by RE.
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Affiliation(s)
- H J Park
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
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Kim YH, Kim YK, Kang SH, Kim YD, Moon BS, Kim PG. Measurement of Trachea with MRI in the Normal Korean Adults. Korean J Anesthesiol 1993. [DOI: 10.4097/kjae.1993.26.6.1111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Yong Hwei Kim
- Department of Anesthesiology, Sung Ae General Hospital, Seoul, Korea
| | - Young Ki Kim
- Department of Anesthesiology, Sung Ae General Hospital, Seoul, Korea
| | - Soon Ho Kang
- Department of Anesthesiology, Sung Ae General Hospital, Seoul, Korea
| | - Young Dae Kim
- Department of Anesthesiology, Sung Ae General Hospital, Seoul, Korea
| | - Byung Soo Moon
- Department of Anesthesiology, Sung Ae General Hospital, Seoul, Korea
| | - Pil Gon Kim
- Department of Anesthesiology, Sung Ae General Hospital, Seoul, Korea
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