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Title Alternative Basic and clinical research regarding vascular endothelial function
FullText URL 127_187.pdf
Author Tsukahara, Hirokazu|
Keywords アルギニン代謝 一酸化窒素 ガス生物学 血管内皮学 酸化ストレス
Publication Title 岡山医学会雑誌
Published Date 2015-12-01
Volume volume127
Issue issue3
Start Page 187
End Page 195
ISSN 0030-1558
language Japanese
Copyright Holders Copyright (c) 2015 岡山医学会
File Version publisher
DOI 10.4044/joma.127.187
NAID 130005116819
JaLCDOI 10.18926/AMO/53672
FullText URL 69_5_267.pdf
Author Inada, Ryo| Nagasaka, Takeshi| Kondo, Yoshitaka| Watanabe, Ayako| Toshima, Toshiaki| Kubota, Nobuhito| Kikuchi, Satoru| Ishida, Michihiro| Kuroda, Shinji| Mori, Yoshiko| Kishimoto, Hiroyuki| Fujiwara, Toshiyoshi|
Abstract The aim of this single-institution, retrospective, observational case-control study was to evaluate the safety and feasibility of laparoscopic proctocolectomy (PC) for ulcerative colitis (UC), by comparing it with a case-control series of open PC. Twenty UC patients who underwent laparoscopic PC were retrospectively compared with the open PC group of 12 patients matched for age, sex, and urgency of the operation. In the laparoscopic PC group, the operative time was significantly longer, but the amount of blood loss was significantly smaller. The open PC patients underwent an intraoperative blood transfusion significantly more often, and the serum C-reactive protein level on the first postoperative day was significantly higher in the open PC group. In the laparoscopic PC group, the rate of severe postoperative morbidities, grades 3 and 4 on the Clavien-Dindo classification, was significantly lower, and the median length of hospital stay was significantly shorter. Laparoscopic PC for patients with UC showed superior perioperative outcomes to open PC, except for longer operative time.
Keywords laparoscopic surgery total proctocolectomy open proctocolectomy ulcerative colitis case-matched study
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2015-10
Volume volume69
Issue issue5
Publisher Okayama University Medical School
Start Page 267
End Page 273
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
Copyright Holders CopyrightⒸ 2015 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 26490023
Web of Science KeyUT 000365519600002
Title Alternative Successful laparoscopic resection of a cecal tumor in a 95-year-old man
FullText URL 127_117.pdf
Author Watanabe, Ayako| Inada, Ryo| Nagasaka, Takeshi| Yagi, Tomohiko| Matsumoto, Hijiri| Toshima, Toshiaki| Kikuchi, Satoru| Kuroda, Shinshi| Kondo, Yoshitaka| Mori, Yoshiko| Kishimoto, Hiroyuki| Fujiwara, Toshiyoshi|
Abstract We report a successful laparoscopic resection of a cecal tumor in a 95-year-old Japanese man. The patient visited an initial hospital with a complaint of constipation in March 2014. Computed tomography scan and colonoscopy showed a stenotic ileocecal cancer with pericolic lymph node metastases, and he was referred to our department for management. Since his general condition was maintained, we performed a laparoscopic ileocecal resection with regional lymph node dissection for the patient. The operation achieved curative resection, and the tumor was diagnosed as a moderately differentiated adenocarcinoma and graded as pStage IIIa (pT3, pN0, pM0) according to the Japanese Classification of Colorectal Carcinoma, eighth edition. He was discharged on the 11th postoperative day without perioperative complications. Several large-scale randomized controlled trials (RCTs) revealed that laparoscopic surgeries for colorectal cancers have some advantages compared to open surgeries, including superior short-term outcomes and comparable long-term outcomes. Unfortunately, since these RCTs did not include enough elderly patients, the safety and feasibility of laparoscopic surgery for extremely elderly patients are still unknown. With respect to less-invasive procedures, these advantages of laparoscopic surgery are also thought to be the advantages for elderly colorectal cancer patients.
Keywords 超高齢者(extremely elderly patient) 大腸癌(colorectal cancer) 腹腔鏡手術(laparoscopic surgery)
Publication Title 岡山医学会雑誌
Published Date 2015-08-03
Volume volume127
Issue issue2
Start Page 117
End Page 121
ISSN 0030-1558
Related Url isVersionOf https://doi.org/10.4044/joma.127.117
language Japanese
Copyright Holders Copyright (c) 2015 岡山医学会
File Version publisher
DOI 10.4044/joma.127.117
NAID 130005096253
JaLCDOI 10.18926/AMO/53337
FullText URL 69_2_87.pdf
Author Murayama, Hidehiko| Nakata, Yusei| Kanazawa, Akane| Watanabe, Hirokazu| Shigemitsu, Yusuke| Iwasaki, Yuka| Tokorodani, Chiho| Miyazawa, Mari| Nishiuchi, Ritsuo| Kikkawa, Kiyoshi|
Abstract Ventriculoperitoneal shunts (VPSs) are used for the treatment of hydrocephalus. Here we analyzed the outcomes of VPS placements in 24 infants to determine the risk factors for shunt failure. The infants had undergone the initial VPS operation in our hospital between March 2005 and December 2013. They were observed until the end of January 2014. We obtained Kaplan-Meier curves and performed a multivariate Cox regression analysis of shunt failure. Of the 24 cases, the median (range) values for gestational age, birth weight, and birth head circumference (HC) were 37 (27-39) wks, 2,736 (686-3,788) g, and 35.3 (23.0-45.3) cm, respectively. The total number of shunt procedures was 45. Shunt failure rates were 0.51/shunt and 0.0053/shunt/year. Shunt infection rates were 0.13/shunt and 0.0014/shunt/year. The Kaplan-Meier analysis revealed an increased risk for shunt failure in infants <1 month old or in the HC >90オtile. The Cox regression analysis yielded hazard ratios (HRs) of 2.93 (95オ confidence interval (CI), 0.96-10.95, p=0.059) for age <1 month, and 4.46 (95オCI:1.20-28.91,p=0.023) for the HC >90オtile. The multivariate Cox regression analysis showed adjusted HRs of 17.56 (95オCI:2.69-202.8, p=0.001) for age <1 month, and 2.95 (95オCI:0.52-24.84, p=0.228) for the HC >90オtile. Our findings thus revealed that the risk factors for shunt failure in infants include age <1 month at the initial VPS placement.
Keywords head circumference shunt failure shunt infection ventriculoperitoneal shunt
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2015-04
Volume volume69
Issue issue2
Publisher Okayama University Medical School
Start Page 87
End Page 93
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
Copyright Holders CopyrightⒸ 2015 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 25899630
Web of Science KeyUT 000353181700003
Title Alternative Cholelithiasis with a cholecystoduodenal fistula complicated with paroxysmal nocturnal hemoglobinuria
FullText URL 127_35.pdf
Author Kato, Takuya| Matsukawa, Hiroyoshi| Shiozaki, Shigehiro| Fuji, Tomokazu| Fujiwara, Yasuhiro| Ninomiya, Motoki|
Abstract  In cases of paroxysmal nocturnal hemoglobinuria (PNH), attention must be paid to potential complications such as thrombosis and hemolysis due to perioperative stress and infection from complement activation. Here we present the case of a 61-year-old Japanese woman with PNH. We made the diagnosis of PNH when she was 28 years old, and we administered repeated steroid medication and erythrocyte transfusion. The patient's cholecystocholedocholithiasis with a cholecystoduodenal fistula was diagnosed based on a survey of the right hypochondriac pain. We performed endoscopic nasobiliary drainage (ENBD) for the prophylaxis of perioperative infection, plus a cholecystectomy and fistulectomy. There were no complications, including hemolysis attack, infection, thrombosis with irrigation erythrocyte transfusion, steroid cover, or the need for heparin administration during the perioperative period. The reduction of the complement activation is necessary in the perioperative management of PNH patients. The prevention of the development of acidosis and hypoxemia, the selection of washed red blood cells, steroid use, appropriate infection measures and thrombosis prophylaxis are all important for the prevention of complications.
Keywords 発作性夜間血色素尿症(PNH)(paroxysmal nocturnal hemoglobinuria (PNH)) 胆嚢十二指腸瘻(cholecystoduodenal fistula) 溶血発作(hemolysis)
Publication Title 岡山医学会雑誌
Published Date 2015-04-01
Volume volume127
Issue issue1
Start Page 35
End Page 39
ISSN 0030-1558
Related Url http://www.okayama-u.ac.jp/user/oma/
language Japanese
Copyright Holders Copyright (c) 2015 岡山医学会
File Version publisher
DOI 10.4044/joma.127.35
NAID 130005068351
Title Alternative Surgically treated Zenker’s diverticulum: Diverticulectomy and cricopharyngeal myotomy
FullText URL 127_19.pdf
Author Ninomiya, Takayuki| Kanaya, Nobuhiko| Katsuda, Koh| Tanakaya, Kohji| Aoki, Hideki| Takeuchi, Hitoshi|
Abstract  Zenker's diverticulum is a very rare disease among gastorointestinal diverticulum. We report a case of Zenker's diverticulum successfully treated with diverticulectomy and cricophalyngial myotomy. A 71-year-old male complained of aspirating water for two years. He was diagnosed as Zenker's diverticulum. Due to his severe symptoms, the operation was performed in an open-neck approach. The left recurrent laryngeal nerve was identified and preserved. An incision was made in the diverticulum wall, and the internal diameter of normal cervical esophagus was measured. The diverticulum was then excised with an automatic suture device in the minor axis direction of the esophagus. A cricopharyngeal myotomy was conducted, because this muscle was fibrotic and stiffened. The patient's symptoms disappeared after the operation. Diverticulectomy and cricopharyngeal myotomy through an open-neck approach is a safe and reliable method that follows, direct access to the diverticulum and recurrent laryngeal nerve.
Keywords Zenker憩室(Zenker’s diverticulum) 輪状咽頭筋切開術(cricopharyngeal myotomy) 頚部アプローチ(open-neck approach)
Publication Title 岡山医学会雑誌
Published Date 2015-04-01
Volume volume127
Issue issue1
Start Page 19
End Page 23
ISSN 0030-1558
language Japanese
Copyright Holders Copyright (c) 2015 岡山医学会
File Version publisher
DOI 10.4044/joma.127.19
NAID 130005068344
JaLCDOI 10.18926/ESR/53194
Title Alternative Aerosol observation at Okayama with Skyradiometer and LIDAR
FullText URL esr_021_1_013_021.pdf
Author Nagamatsu, Sinpei| Egawa, Daiki| Tsukamoto, Osamu|
Abstract  Aerosol is one of the controlling parameter for the global climate and also effects on local health hazards. The measurement of the aerosol was originally carried out as in-situ sampling and mass weight measurement including chemical analysis. Recently, remote sensing method is applied as satellite remote sensing and surface based remote sensing. Skyradiometer and LIDAR are surface based remote sensing system. Skyradiometer measures solar radiation as direct and scattered solar radiation affected by aerosols. LIDAR emit laser beam upward and it is backscattered by overlying aerosols. The backscattered light is received by a telescope and vertical distributions of the aerosols are obtained. These measurements require atmospheric radiation physics.  A Skyradiometer and a LIDAR were operated continuously at Okayama University campus and aerosol parameters were obtained from both of the system. Seasonal variations of the AOT (Aerosol Optical Thickness) and Angstrom parameter (α) are evaluated. During some dust events (e.g. yellow sand and PM2.5), time variations of these parameters were identified from both of the measurement system.
Keywords Aerosol Skyradiometer LIDAR Aerosol Optical Thickness (AOT)
Publication Title Okayama University Earth Science Report
Published Date 2014-12-27
Volume volume21
Issue issue1
Start Page 13
End Page 21
ISSN 1340-7414
language Japanese
Copyright Holders © 2014 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved
File Version publisher
NAID 120005567873
Author Yasuba, Ken-ichiro|
Published Date 2015-02-01
Publication Title 岡山大学農学部学術報告
Volume volume104
Content Type Departmental Bulletin Paper
Author Kamimura, Kazuo| Nagata, Nozomu| Kikumoto, Mei| Sharmin, Sultana| Wakai, Satoshi| Kanao, Tadayoshi|
Published Date 2015-02-01
Publication Title 岡山大学農学部学術報告
Volume volume104
Content Type Departmental Bulletin Paper
Author Kondo, Yoshitaka| Nagasaka, Takeshi| Kobayashi, Satoru| Kobayashi, Naoya| Fujiwara, Toshiyoshi|
Published Date 2014-03
Publication Title Hepato-Gastroenterology
Volume volume61
Issue issue130
Content Type Journal Article
Author Yamada, Eiji| Shirakawa, Yasuhiro| Yamatsuji, Tomoki| Sakuma, Leon| Takaoka, Munenori| Yamada, Takako| Noma, Kazuhiro| Sakurama, Kazufumi| Fujiwara, Yasuhiro| Tanabe, Shunsuke| Nagasaka, Takeshi| Fujiwara, Toshiyoshi| Naomoto, Yoshio|
Published Date 2012-12
Publication Title Journal of Surgical Research
Volume volume178
Issue issue2
Content Type Journal Article
Title Alternative Giant rectal gastrointestinal stromal tumor successfully resected by abdominoperineal resection combined with posterior vaginal wall resection
FullText URL 126_217.pdf
Author Iwakawa, Kazuhide| Nishie, Manabu| Tokunaga, Naoyuki| Miyaso, Hideaki| Iwagaki, Hiromi|
Abstract We report a case of giant rectal gastrointestinal stromal tumor (GIST) successfully resected by abdominoperineal resection combined with posterior vaginal wall resection. Our patient was a 79-year-old woman had been diagnosed as having von Recklinghausen disease at the age of 30 years. In 2006, a computed tomography (CT) scan revealed a tumor originating from the posterior wall of the rectum. In June 2010, she was admitted to our hospital with the chief complaint of bloody stool. A CT scan revealed a giant tumor that had increased to 9cm in size. Colonoscopy demonstrated a submucosal tumor, which was subsequently diagnosed by biopsy as a GIST. Due to the patient's continuous bleeding and abdominal pain, an emergent abdominoperineal resection was performed at that time. The tumor, which measured 8×9cm, was immunohistochemically positive for c-kit and CD34. Concomitant resection of the posterior wall of the vagina via the perineal approach provided a wide area to expose the tumor for a safe operation. The patient has been well with no sign of recurrence since the operation. This procedure is recommended as a useful approach for giant rectal GISTs or rectal cancer with invasion of the posterior pelvic wall.
Keywords 巨大直腸GIST(giant rectal GIST) 腹会陰式直腸切断術(abdominoperineal resection)
Publication Title 岡山医学会雑誌
Published Date 2014-12-01
Volume volume126
Issue issue3
Start Page 217
End Page 221
ISSN 0030-1558
language Japanese
Copyright Holders Copyright (c) 2014 岡山医学会
File Version publisher
DOI 10.4044/joma.126.217
NAID 130004903245
Author MINOWA, Hirotsugu| MUNESAWA, Yoshiomi| SUZUKI, Kazuhiko|
Published Date 2012-10-15
Publication Title 安全工学
Volume volume51
Issue issue5
Content Type Journal Article
JaLCDOI 10.18926/AMO/52893
FullText URL 68_5_255.pdf
Author Esumi, Satoru| Kawasaki, Yoichi| Gomita, Yutaka| Kitamura, Yoshihisa| Sendo, Toshiaki|
Abstract Motivation incorporates several psychological aspects that produce reward-related and learning behaviors. Although reward-related behavior is reported to be mediated by the dopaminergic reward pathway, the involvement of dopaminergic systems in motivated behavior has not been fully clarified. Several experimental methodologies for motivational behavior have been reported, but pharmacological characteristics seem to vary among these methodologies. In this review, we attempt to summarize three main concepts:(1) the relationship of dopamine neuron physiology with motivated behavior, (2) the pharmacological characteristics of the runway intracranial self-stimulation model, and (3) the behavioral distinction of disparate motivated behaviors.
Keywords motivation reward dopamine operant behavior intracranial self-stimulation
Amo Type Review
Publication Title Acta Medica Okayama
Published Date 2014-10
Volume volume68
Issue issue5
Publisher Okayama University Medical School
Start Page 255
End Page 262
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 25338481
Web of Science KeyUT 000343269300001
Author MINOWA, Hirotsugu| MUNESAWA, Yoshiomi| HASHIMOTO, Kohei|
Published Date 2014-10-15
Publication Title 安全工学
Volume volume53
Issue issue5
Content Type Journal Article
Author Ohnishi, Atsuyuki| Miyake, Yasuhiro| Matsushita, Hiroshi| Matsumoto, Kazuyuki| Takaki, Akinobu| Yasunaka, Tetsuya| Koike, Kazuko| Ikeda, Fusao| Shiraha, Hidenori| Nouso, Kazuhiro| Yamamoto, Kazuhide|
Published Date 2012
Publication Title Digestion
Volume volume86
Issue issue2
Content Type Journal Article
JaLCDOI 10.18926/AMO/52658
FullText URL 68_3_171.pdf
Author Hagiya, Hideharu| Matsumoto, Mitsuaki| Yamasawa, Takahiko| Haruki, Yuto| Otsuka, Fumio|
Abstract A 79-year-old man who had undergone a right femoropopliteal (FP) bypass operation 6 weeks previously was diagnosed with vascular graft infection caused by Staphylococcus lugdunensis. Another FP bypass operation was performed, with long-term administration of antibiotics, and the patient eventually recovered well without any recurrences for over 2 years. Although S. lugdunens is classified as coagulase-negative Staphylococcus, its pathogenicity has been reported to be equal to that of S. aureus. Based on the literature review, the organism characteristically colonizes the inguinal area of human skin;thus, operations such as FP bypass grafting may place patients at a relatively high risk for infection by S. lugdunensis, a potentially high-pathogenicity organism.
Keywords coagulase-negative Staphylococcus (CNS) femoropopliteal (FP) bypass Staphylococcus lugdunensis vacuum-assisted closure (VAC) therapy vascular graft infection (VGI)
Amo Type Case Report
Publication Title Acta Medica Okayama
Published Date 2014-06
Volume volume68
Issue issue3
Publisher Okayama University Medical School
Start Page 171
End Page 175
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 24942796
Web of Science KeyUT 000337655600007
JaLCDOI 10.18926/AMO/52407
FullText URL 68_2_111.pdf
Author Shirakawa, Yasuhiro| Noma, Kazuhiro| Maeda, Naoaki| Katsube, Ryoichi| Tanabe, Shunsuke| Ohara, Toshiaki| Sakurama, Kazufumi| Fujiwara, Toshiyoshi|
Abstract Thoracoscopic esophagectomy in the prone position (TEPP) might enable solo-surgery in cases requiring resection of the esophagus and the surrounding lymph nodes due to the associated advantages of good exposure of the surgical field and ergonomic considerations for the surgeon. However, no one approach can be for all patients requiring extensive lymphadenectomy. We recently developed an assistant-based procedure to standardize exposure of the surgical field. Patients were divided into 1 of 2 groups:a pre-standardization group (n=37) and a post-standardization group (n=28). The thoracoscopic operative time was significantly shorter (p=0.0037) in the post-standardization group (n=28; 267±31min) than in the pre-standardization group (n=37;301±53min). Further, learning curve analysis using the moving average method showed stabilization of the thoracoscopic operative time after the standardization. No significant differences were found in the number of mediastinal lymph nodes dissected or intraoperative blood loss between the 2 groups. There were also no significant differences in the complication rate. Assistant-based surgery and standardization of the procedure resulted in a well-exposed and safe surgical field. TEPP decreased the operative time, even in patients requiring extensive lymphadenectomy.
Keywords thoracoscopic esophagectomy prone position standardization
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2014-04
Volume volume68
Issue issue2
Publisher Okayama University Medical School
Start Page 111
End Page 117
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 24743786
Web of Science KeyUT 000334652700006
Author Fujiwara, Y.| Yamada, T.| Naomoto, Y.| Yamatsuji, T.| Shirakawa, Y.| Tanabe, S.| Noma, K.| Kimura, T.| Aoki, H.| Matsukawa, H.| Kimura, M.| Nonaka, Y.| Sasaki, H.| Onoda, T.| Otawa, Y.| Takaoka, M.| Fukazawa, T.| Ohno, Y.| Fujiwara, T.|
Published Date 2013-12
Publication Title Journal of Hospital Infection
Volume volume85
Issue issue4
Content Type Journal Article
Author Morimoto, Nobutoshi| Abe, Koji|
Published Date 2014-04-01
Publication Title 岡山医学会雑誌
Volume volume126
Issue issue1
Content Type Journal Article