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Author Tahara, T.; Hirata, I.; Nakano, N.; Nagasaka, M.; Nakagawa, Y.; Shibata, T.; Ohmiya, N. url  doi
openurl 
  Title Comprehensive DNA Methylation Profiling of Inflammatory Mucosa in Ulcerative Colitis Type Journal Article
  Year 2017 Publication Inflammatory Bowel Diseases Abbreviated Journal Inflamm Bowel Dis  
  Volume (up) 23 Issue 1 Pages 165-173  
  Keywords  
  Abstract INTRODUCTION: Aberrant DNA methylation frequently occurs in the inflammatory mucosa in ulcerative colitis (UC) and is involved in UC-related tumorigenesis. We performed comprehensive DNA methylation profiling of the promoter regions of the inflamed rectal mucosae of patients with UC. DESIGN: The methylation status of the promoter CpG islands (CGIs) of 45 cancer/inflammation or age-related candidate genes and the LINE1 repetitive element were examined in the colonic mucosae of 84 cancer-free patients with UC by bisulfite pyrosequencing. Methylation status of selected genes (DPYS, N33, MIR1247, GSTP1, and SOX11) was also determined in 14 neoplastic lesions (5 with high-grade dysplasia and 9 with carcinoma) and 8 adjacent tissues derived from 12 patients. An Infinium HumanMethylation450 BeadChip array was used to characterize the methylation status of >450,000 CpG sites for 10 patients with UC. RESULTS: Clustering analysis based on the methylation status of the candidate genes clearly distinguished the inflammatory samples from the noninflammatory samples. The hypermethylation of the promoter CGIs strongly correlated with increased disease duration, which is a known risk factor for the development of colon cancer. Genome-wide methylation analyses revealed a high rate of hypermethylation in the severe phenotype of UC, particularly at the CGIs. Exclusively hypermethylated promoter CGIs in the severe phenotypes were significantly related to genes involved in biosynthetic processes, the regulation of metabolic processes, and nitrogen compound metabolic processes. CONCLUSION: Our findings suggest the potential utility of DNA methylation as a molecular marker and therapeutic target for UC-related tumorigenesis.  
  Address *Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Japan; and daggerDepartment of Gastroenterology, Tanimukai Hospital Japan, Nishinomiya, Japan  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1078-0998 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:27930411 Approved no  
  Call Number ref @ user @ Serial 96375  
Permanent link to this record
 

 
Author Shibata, W.; Sohara, M.; Wu, R.; Kobayashi, K.; Yagi, S.; Yaguchi, K.; Iizuka, Y.; Iwasa, M.; Nakahata, H.; Yamaguchi, T.; Matsumoto, H.; Okada, M.; Taniguchi, K.; Hayashi, A.; Inazawa, S.; Inagaki, N.; Sasaki, T.; Koh, R.; Kinoshita, H.; Nishio, M.; Ogashiwa, T.; Ookawara, A.; Miyajima, E.; Oba, M.; Ohge, H.; Maeda, S.; Kimura, H.; Kunisaki, R. url  doi
openurl 
  Title Incidence and Outcomes of Central Venous Catheter-related Blood Stream Infection in Patients with Inflammatory Bowel Disease in Routine Clinical Practice Setting Type Journal Article
  Year 2017 Publication Inflammatory Bowel Diseases Abbreviated Journal Inflamm Bowel Dis  
  Volume (up) 23 Issue 11 Pages 2042-2047  
  Keywords  
  Abstract BACKGROUND: Patients with inflammatory bowel disease (IBD) occasionally require central venous catheter (CVC) placement to support a therapeutic plan. Given that CVC can predispose patients to infection, this investigation was undertaken to assess the incidence, risk factors, and outcomes of CVC-related blood stream infection (CRBSI) in patients with IBD during routine clinical practice. METHODS: Data were compiled using retrospective chart reviews of 1367 patients treated at our IBD center between 2007 and 2012 during routine clinical practice. Among the 1367 patients, 314 who had received CVC placements were included. Patients with positive blood culture were considered as “definite” CRBSI, whereas “possible” CRBSI was defined as patients in whom fever alleviated within 48 hours post-CVC without any other infection. Patients' demographic variables including age, body mass index, serum albumin, duration of CVC placement, use of antibiotics, medications for IBD, and perioperative status between CRBSI and non-CRBSI subgroups were compared by applying a multivariate Poisson logistic regression model. RESULTS: Among the 314 patients with CVC placement, there were 83 CRBSI cases (26.4%). The average time to the onset of CRBSI was 22.5 days (range 4-105 days). The jugular vein access was found to be the most serious risk of CRBSI (risk ratio 2.041 versus subclavian vein). All patients with CRBSI fully recovered. CONCLUSIONS: In this investigation, regardless of the patients' demographic features including immunosuppressive therapy, up to 30% of febrile IBD patients with CVC showed CRBSI. It is believed that CVC placement per se is a risk of CRBSI in patients with IBD.  
  Address *Inflammatory Bowel Disease Center, Yokohama City University Medical Centre, Yokohama, Japan;daggerDivision of Gastroenterology, Department of Medicine, Yokohama City University, Yokohama, Japan;double daggerSchool of Medicine, Yokohama City University, Yokohama, Japan; section signDepartment of Laboratory Medicine and Clinical Investigation, Yokohama City University Medical Centre, Yokohama, Japan; ||Department of Biostatistics and Epidemiology, Graduate School of Medicine, Yokohama City University, Yokohama, Japan; and paragraph signDepartment of Infectious Diseases, Hiroshima University Hospital, Japan  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1078-0998 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:29045261 Approved no  
  Call Number ref @ user @ Serial 99359  
Permanent link to this record
 

 
Author Yu, W.-L.; Lee, M.-F.; Chen, C.-C.; Tang, H.-J.; Ho, C.-H.; Chuang, Y.-C. url  doi
openurl 
  Title Impacts of Hypervirulence Determinants on Clinical Features and Outcomes of Bacteremia Caused by Extended-Spectrum beta-Lactamase-Producing Klebsiella pneumoniae Type Journal Article
  Year 2017 Publication Microbial Drug Resistance (Larchmont, N.Y.) Abbreviated Journal Microb Drug Resist  
  Volume (up) 23 Issue 3 Pages 376-383  
  Keywords Aged; Anti-Bacterial Agents/therapeutic use; Bacteremia/drug therapy/*microbiology; Bacterial Proteins/genetics; Cross Infection/drug therapy/microbiology; Female; Hospital Mortality; Humans; Klebsiella Infections/drug therapy/*microbiology; Klebsiella pneumoniae/*genetics; Male; Middle Aged; Serogroup; Urinary Tract Infections/drug therapy/microbiology; Virulence Factors/*genetics; beta-Lactamases/*genetics; Esbl; Klebsiella pneumoniae; hypermucoviscosity; hypervirulence; rmpA; virulence  
  Abstract We investigated the implications of hypervirulence determinants on clinical features of 48 adult patients with bacteremia caused by extended-spectrum beta-lactamase-producing Klebsiella pneumoniae. Isolates in the hypervirulence group included any of the following virulence determinants: K1/K2 capsule serotypes, hypermucoviscosity phenotype, rmpA gene, or rmpA2 gene. Nonhypervirulence group isolates were negative for all of the above virulence factors. In this study, all isolates used were non-K1/K2 strains. Statistically significant differences were observed in clinical features of patients between the two groups. The hypervirulent isolates (n = 19), including 11 isolates with the hypermucoviscosity phenotype, 15 with the rmpA gene, and 16 with the rmpA2 gene, were more commonly recovered from diabetic patients and mainly manifested as secondary bacteremia (such as pneumonia, urinary tract infections, or other localized infections). The nonhypervirulent isolates (n = 29) were more commonly recovered from patients after prolonged hospital stays (>30 days) and mostly manifested as primary bacteremia. The overall in-hospital mortality was 56.3%. Hazard ratio (HR) analysis revealed the following positive predictors for mortality: nosocomial infection, stay in an intensive care unit, no removal of the central venous catheter, Charlson comorbidity score, and APACHE II score (>==15). The negative predictors were initial appropriate antibiotic therapy (HR 0.42) and urinary tract infection (HR 0.19). Charlson score was an independent confounder based on multivariate analysis (HR 1.43, 95% confidence interval 1.04-1.99). In conclusion, hypervirulence determinants played a role in causing secondary infections in diabetic patients; however, the presence of morbidity cofactors could themselves influence mortality, despite the absence of hypervirulence determinants.  
  Address 6 Department of Internal Medicine, Chi Mei Medical Center-Liou Ying , Tainan City, Taiwan  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1076-6294 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:27380450 Approved no  
  Call Number ref @ user @ Serial 99505  
Permanent link to this record
 

 
Author Shibata, W.; Sohara, M.; Wu, R.; Kobayashi, K.; Yagi, S.; Yaguchi, K.; Iizuka, Y.; Iwasa, M.; Nakahata, H.; Yamaguchi, T.; Matsumoto, H.; Okada, M.; Taniguchi, K.; Hayashi, A.; Inazawa, S.; Inagaki, N.; Sasaki, T.; Koh, R.; Kinoshita, H.; Nishio, M.; Ogashiwa, T.; Ookawara, A.; Miyajima, E.; Oba, M.; Ohge, H.; Maeda, S.; Kimura, H.; Kunisaki, R. url  doi
openurl 
  Title Incidence and Outcomes of Central Venous Catheter-related Blood Stream Infection in Patients with Inflammatory Bowel Disease in Routine Clinical Practice Setting Type Journal Article
  Year 2017 Publication Inflammatory Bowel Diseases Abbreviated Journal Inflamm Bowel Dis  
  Volume (up) 23 Issue 11 Pages 2042-2047  
  Keywords  
  Abstract BACKGROUND: Patients with inflammatory bowel disease (IBD) occasionally require central venous catheter (CVC) placement to support a therapeutic plan. Given that CVC can predispose patients to infection, this investigation was undertaken to assess the incidence, risk factors, and outcomes of CVC-related blood stream infection (CRBSI) in patients with IBD during routine clinical practice. METHODS: Data were compiled using retrospective chart reviews of 1367 patients treated at our IBD center between 2007 and 2012 during routine clinical practice. Among the 1367 patients, 314 who had received CVC placements were included. Patients with positive blood culture were considered as “definite” CRBSI, whereas “possible” CRBSI was defined as patients in whom fever alleviated within 48 hours post-CVC without any other infection. Patients' demographic variables including age, body mass index, serum albumin, duration of CVC placement, use of antibiotics, medications for IBD, and perioperative status between CRBSI and non-CRBSI subgroups were compared by applying a multivariate Poisson logistic regression model. RESULTS: Among the 314 patients with CVC placement, there were 83 CRBSI cases (26.4%). The average time to the onset of CRBSI was 22.5 days (range 4-105 days). The jugular vein access was found to be the most serious risk of CRBSI (risk ratio 2.041 versus subclavian vein). All patients with CRBSI fully recovered. CONCLUSIONS: In this investigation, regardless of the patients' demographic features including immunosuppressive therapy, up to 30% of febrile IBD patients with CVC showed CRBSI. It is believed that CVC placement per se is a risk of CRBSI in patients with IBD.  
  Address *Inflammatory Bowel Disease Center, Yokohama City University Medical Centre, Yokohama, Japan;daggerDivision of Gastroenterology, Department of Medicine, Yokohama City University, Yokohama, Japan;double daggerSchool of Medicine, Yokohama City University, Yokohama, Japan; section signDepartment of Laboratory Medicine and Clinical Investigation, Yokohama City University Medical Centre, Yokohama, Japan; ||Department of Biostatistics and Epidemiology, Graduate School of Medicine, Yokohama City University, Yokohama, Japan; and paragraph signDepartment of Infectious Diseases, Hiroshima University Hospital, Japan  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1078-0998 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:29045261 Approved no  
  Call Number ref @ user @ Serial 100389  
Permanent link to this record
 

 
Author Yu, W.-L.; Lee, M.-F.; Chen, C.-C.; Tang, H.-J.; Ho, C.-H.; Chuang, Y.-C. url  doi
openurl 
  Title Impacts of Hypervirulence Determinants on Clinical Features and Outcomes of Bacteremia Caused by Extended-Spectrum beta-Lactamase-Producing Klebsiella pneumoniae Type Journal Article
  Year 2017 Publication Microbial Drug Resistance (Larchmont, N.Y.) Abbreviated Journal Microb Drug Resist  
  Volume (up) 23 Issue 3 Pages 376-383  
  Keywords Aged; Anti-Bacterial Agents/therapeutic use; Bacteremia/drug therapy/*microbiology; Bacterial Proteins/genetics; Cross Infection/drug therapy/microbiology; Female; Hospital Mortality; Humans; Klebsiella Infections/drug therapy/*microbiology; Klebsiella pneumoniae/*genetics; Male; Middle Aged; Serogroup; Urinary Tract Infections/drug therapy/microbiology; Virulence Factors/*genetics; beta-Lactamases/*genetics; Esbl; Klebsiella pneumoniae; hypermucoviscosity; hypervirulence; rmpA; virulence  
  Abstract We investigated the implications of hypervirulence determinants on clinical features of 48 adult patients with bacteremia caused by extended-spectrum beta-lactamase-producing Klebsiella pneumoniae. Isolates in the hypervirulence group included any of the following virulence determinants: K1/K2 capsule serotypes, hypermucoviscosity phenotype, rmpA gene, or rmpA2 gene. Nonhypervirulence group isolates were negative for all of the above virulence factors. In this study, all isolates used were non-K1/K2 strains. Statistically significant differences were observed in clinical features of patients between the two groups. The hypervirulent isolates (n = 19), including 11 isolates with the hypermucoviscosity phenotype, 15 with the rmpA gene, and 16 with the rmpA2 gene, were more commonly recovered from diabetic patients and mainly manifested as secondary bacteremia (such as pneumonia, urinary tract infections, or other localized infections). The nonhypervirulent isolates (n = 29) were more commonly recovered from patients after prolonged hospital stays (>30 days) and mostly manifested as primary bacteremia. The overall in-hospital mortality was 56.3%. Hazard ratio (HR) analysis revealed the following positive predictors for mortality: nosocomial infection, stay in an intensive care unit, no removal of the central venous catheter, Charlson comorbidity score, and APACHE II score (>==15). The negative predictors were initial appropriate antibiotic therapy (HR 0.42) and urinary tract infection (HR 0.19). Charlson score was an independent confounder based on multivariate analysis (HR 1.43, 95% confidence interval 1.04-1.99). In conclusion, hypervirulence determinants played a role in causing secondary infections in diabetic patients; however, the presence of morbidity cofactors could themselves influence mortality, despite the absence of hypervirulence determinants.  
  Address 6 Department of Internal Medicine, Chi Mei Medical Center-Liou Ying , Tainan City, Taiwan  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1076-6294 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:27380450 Approved no  
  Call Number ref @ user @ Serial 100535  
Permanent link to this record
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