Author Okui, Akemi| Soga, Yoshihiko| Kokeguchi, Susumu| Nose, Motoko| Yamanaka, Reiko| Kusano, Nobuchika| Morita, Manabu|
Published Date 2015-07-15
Publication Title Internal Medicine
Volume volume54
Issue issue14
Content Type Journal Article
JaLCDOI 10.18926/AMO/52405
FullText URL 68_2_89.pdf
Author Sako, Shinichi| Kariyama, Reiko| Mitsuhata, Ritsuko| Yamamoto, Masumi| Wada, Koichiro| Ishii, Ayano| Uehara, Shinya| Kokeguchi, Susumu| Kusano, Nobuchika| Kumon, Hiromi|
Abstract We conducted a study on molecular epidemiology and clinical implications of metallo-β-lactamase (MBL)-producing Pseudomonas aeruginosa isolated from urine. Over a 10-year period from 2001 through 2010, a total of 92 MBL-producing P. aeruginosa urine isolates were collected from patients (one isolate per patient) who were admitted to 5 hospitals in Okayama Prefecture, Japan. When cross-infection was suspected in the hospital, pulsed-field gel electrophoresis was performed. In the resulting dendrogram of 79 MBL-producing P. aeruginosa urine isolates, no identical isolates and 7 pairs of isolates with ≥80% similarity were found. The biofilm-forming capabilities of 92 MBL-producing P. aeruginosa urine isolates were significantly greater than those of 92 non-MBL-producing urine isolates in a medium of modified artificial urine. The imipenem resistance transferred in 16 of 18 isolates tested, and these frequencies were in the range of 10-3 to 10-9. All of 18 isolates tested belonged to internationally spread sequence type 235 and had 3 gene cassettes of antimicrobial resistance genes in the class 1 integron. The strong biofilm-forming capabilities of MBL-producing P. aeruginosa urine isolates could be seriously implicated in nosocomial infections. To prevent spread of the organism and transferable genes, effective strategies to inhibit biofilm formation in medical settings are needed.
Keywords Pseudomonas aeruginosa metallo-β-lactamase molecular epidemiology biofilm urinary tract infection
Amo Type Original Article
Published Date 2014-04
Publication Title Acta Medica Okayama
Volume volume68
Issue issue2
Publisher Okayama University Medical School
Start Page 89
End Page 99
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2014 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 24743784
Web of Science KeyUT 000334652700004
Related Url http://ousar.lib.okayama-u.ac.jp/metadata/52504
JaLCDOI 10.18926/AMO/52402
FullText URL 68_2_57.pdf
Author Hagiya, Hideharu| Naito, Hiromichi| Hagioka, Shingo| Okahara, Shuji| Morimoto, Naoki| Kusano, Nobuchika| Otsuka, Fumio|
Abstract The effect of antibiotics during the perioperative period of percutaneous dilatational tracheostomy (PDT) is still controversial. A total of 297 patients who underwent the PDT procedure were divided into 2 groups:those administered antibiotics perioperatively and those not administered antibiotics. Wound infections were noted in 7 cases (incidence rate, 2.36%) and no death was recorded. Of the 69 patients without antibiotics, 5 developed wound infections (incidence rate, 7.25%), while only 2 of the 228 patients with antibiotics developed wound infections (incidence rate, 0.88%) (p=0.002;risk ratio, 8.82;95% confidence interval, 1.67-46.6). Of the 7 cases of wound infection, 5 cases occurred during the early period after PDT (within 7 days). Collectively, the present results suggest that prophylactic administration of antibiotics may prevent the incidence of PDT-induced wound infection, especially in the early phase after the PDT procedures. The need for antibiotics in PDT should be reconsidered.
Keywords airway management critically ill patient percutaneous dilatational tracheostomy surgical site infection
Amo Type Original Article
Published Date 2014-04
Publication Title Acta Medica Okayama
Volume volume68
Issue issue2
Publisher Okayama University Medical School
Start Page 57
End Page 62
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2014 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 24743781
Web of Science KeyUT 000334652700001
Title Alternative SFTS : Severe fever with thrombocytopenia syndrome
FullText URL 126_65.pdf
Author Watanabe, Tokiko| Kusano, Nobuchika| Iwatsuki, Keiji|
Publication Title 岡山医学会雑誌
Published Date 2014-04-01
Volume volume126
Issue issue1
Start Page 65
End Page 67
ISSN 0030-1558
Related Url http://www.okayama-u.ac.jp/user/oma/
language 日本語
Copyright Holders Copyright (c) 2014 岡山医学会
File Version publisher
DOI 10.4044/joma.126.65
JaLCDOI 10.18926/AMO/32110
FullText URL fulltext.pdf
Author Shinji, Toshiyuki| Kyaw, Yi Yi| Gokan, Katsunori| Tanaka, Yasuhito| Ochi, Koji| Kusano, Nobuchika| Mizushima, Takaaki| Fujioka, Shin-ichi| Shiraha, Hidenori| Lwin, Aye Aye| Shiratori, Yasushi| Mizokami, Masashi| Khin, Myo| Miyahara, Masayuki| Okada, Shigeru| Koide, Norio|
Abstract The prevalence of hepatitis C virus (HCV) genotypes in Myanmar in comparison with the rest of Southeast Asia is not well known. Serum samples were obtained from 201 HCV antibody-positive volunteer blood donors in and around the Myanmar city of Yangon. Of these, the antibody titers of 101 samples were checked by serial dilution using HCV antibody PA test II and Terasaki microplate as a low-cost method. To compare antibody titers by this method and RNA identification, we also checked HCV-RNA using the Amplicor 2.0 test. Most high-titer groups were positive for HCV-RNA. Of the 201 samples, 110 were successfully polymerase chain reaction (PCR) amplified. Among them, 35 (31.8%) were of genotype 1, 52 (47.3%) were of genotype 3, and 23 (20.9%) were of type 6 variants, and phylogenetic analysis of these type 6 variants revealed that 3 new type 6 subgroups exist in Myanmar. We named the subgroups M6-1, M6-2, and M6-3. M6-1 and M6-2 were relatively close to types 8 and 9, respectively. M6-3, though only found in one sample, was a brand-new subgroup. These subtypes were not seen in Vietnam, where type 6 group variants are widely spread. These findings may be useful for analyzing how and when these subgroups were formed.
Keywords hepatitis C virus(HCV)genotype type 6 variant Myanmar Southeast Asia phylogenetic analysis
Amo Type Article
Published Date 2004-06
Publication Title Acta Medica Okayama
Volume volume58
Issue issue3
Publisher Okayama University Medical School
Start Page 135
End Page 142
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 15471435
Web of Science KeyUT 000222273300004
JaLCDOI 10.18926/AMO/31682
FullText URL fulltext.pdf
Author Shinji, Toshiyuki| Ujike, Kozo| Ochi, Koji| Kusano, Nobuchika| Kikui, Tetsuya| Matsumura, Naoki| Emori, Yasuyuki| Seno, Toshinobu| Koide, Norio|
Abstract In studies of the pathogenesis of pancreatic fibrosis, pancreatic stellate cells (PSCs) have recently gained attention. In the present study, we established a new collagenase perfusion method through thoracic aorta cannulation to isolate PSCs, and we studied gene expression of TGF-beta1, type I collagen, and connective tissue growth factor using primary cultured PSCs. Our method facilitated PSC isolation, and by our new method, 4.3 +/- 1.2 x 10(6) PSCs were obtained from a rat. In comparing the expression of these genes with that of hepatic stellate cells (HSCs), we observed a similar pattern, although PSCs expressed type I collagen gene earlier than did HSCs. These results suggest that PSCs may play an important role in fibrosis of the pancreas, as HSCs do in liver fibrosis; in addition, PSCs may exist in a preactivated state or may be more easily activated than are HSCs. We also isolated the PSCs from a WBN/Kob rat, the spontaneous pancreatitis rat, and compared the gene expression with that from a normal rat.
Keywords pancreatic stellate cell transforming growth factor beta connective tissue growth factor collagenase perfusion WBN/Kob rat
Amo Type Article
Published Date 2002-08
Publication Title Acta Medica Okayama
Volume volume56
Issue issue4
Publisher Okayama University Medical School
Start Page 211
End Page 218
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders Copyright© 2002 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 12199527
Web of Science KeyUT 000177382600007
Author 草野 展周| 小出 典男|
Published Date 2001-04-28
Publication Title 岡山医学会雑誌
Volume volume113
Issue issue1
Content Type Journal Article
Author 木浦 勝行| 谷本 安| 田端 雅弘| 金廣 有彦| 上岡 博| 谷本 光音| 渡邊 都貴子| 草野 展周| 小出 典男|
Published Date 2005-05-30
Publication Title 岡山医学会雑誌
Volume volume115
Issue issue1
Content Type Journal Article