| 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 |
| Publication Title | Acta Medica Okayama |
| Published Date | 2014-04 |
| 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 | English |
| 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 |
| Publication Title | Acta Medica Okayama |
| Published Date | 2014-04 |
| 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 | English |
| 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 | Japanese |
| 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 |
| Publication Title | Acta Medica Okayama |
| Published Date | 2004-06 |
| 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 | English |
| 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 |
| Publication Title | Acta Medica Okayama |
| Published Date | 2002-08 |
| 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 | English |
| 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 |
