JaLCDOI 10.18926/AMO/31722
フルテキストURL fulltext.pdf
著者 Nagai, Atsushi| Nasu, Yasutomo| Shirasaki, Yoshinori| Iguchi, Hiroki| Arata, Ryouji| Tsugawa, Masaya| Tsushima, Tomoyasu| Kumon, Hiromi|
抄録 <p>We performed laparoscopic prostatectomy in seven cases with organ-confined prostate cancer. In 6 cases, the surgery was completed successfully and the mean operative time was 424 min. Volume of blood loss was 200 to 3,200 ml and catheterization lasted 6 to 37 days. No major complications were observed in 6 of the cases. In one case, open surgical conversion was necessary mainly due to a bladder injury. Although these were the first cases of laparoscopic prostatectomy in our institution, the technical difficulty and complexity of the surgery were moderate. We believe that laparoscopic radical prostatectomy will become a standard option for the treatment of organ-confined prostate cancer.</p>
キーワード prosatatic cancer laparoscopy prostatectomy
Amo Type Article
発行日 2002-02
出版物タイトル Acta Medica Okayama
56巻
1号
出版者 Okayama University Medical School
開始ページ 51
終了ページ 52
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
論文のバージョン publisher
査読 有り
PubMed ID 11873945
Web of Science KeyUT 000174031300009
JaLCDOI 10.18926/AMO/31599
フルテキストURL fulltext.pdf
著者 Kuroda, Masahiro| Tsushima, Tomoyasu| Nasu, Yasutomo| Asaumi, Junichi| Nishikawa, Koji| Gao, Xian Shu| Joja, Ikuo| Takeda, Yoshihiro| Togami, Izumi| Makihata, Eiichi| Kawasaki, Shoji| Ohmori, Hiroyuki| Hiraki, Yoshio|
抄録 <p>We performed a long-term follow-up of 4 patients with penile cancer who underwent hyperthermotherapy from August 1985 until August 1992. Hyperthermia was applied using a frequency of 350 MHz with a waveguide applicator twice a week for 60 min each for an average of 9.5 times (varying from 6 to 13 times). The total heating time that the temperature of urethra could be kept above 42 degrees C, was 166 min on the average (ranging from 0 to 463 min). Two patients classified as stage I according to the Jackson classification and 1 patient classified as stage IV underwent combined radiotherapy and received an average radiation dose of 53 Gy (range, 40-70 Gy). Among these patients 2 underwent combined chemotherapy with bleomycin or peplomycin. Malignant cells disappeared posttherapeutically and in August 1992, after an average of 5 years and 9 months (varying from 4 years 6 months to 6 years 10 months), the patients were free of recurrences. The one patient on stage IV had extensive invasion of the abdominal wall, but still recovered completely. One patient on stage III underwent combined chemotherapy and hyperthermotherapy, but heating had obviously been insufficient. There was a residue of malignant cells after the treatment and we performed a penectomy. Regarding functional preservation of the penis a multidisciplinary therapy incorporating hyperthermotherapy can be expected to increase the curativity. This indicates that it could induce in an advanced case, where an operation would be difficult, complete remission.</p>
キーワード penile cancer hyperthermia radiotherapy chemotherapy
Amo Type Article
発行日 1993-06
出版物タイトル Acta Medica Okayama
47巻
3号
出版者 Okayama University Medical School
開始ページ 169
終了ページ 174
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
論文のバージョン publisher
査読 有り
PubMed ID 8379345
Web of Science KeyUT A1993LL12400005
JaLCDOI 10.18926/AMO/30986
フルテキストURL fulltext.pdf
著者 Ebara, Shin| Katayama, Yoshihisa| Tanimoto, Ryuta| Edamura, Kohei| Nose, Hiroyuki| Manabe, Daisuke| Kobayashi, Tomoko| Kobayashi, Yasuyuki| Kobuke, Makoto| Takemoto, Mitsuhiro| Saika, Takeshi| Nasu, Yasutomo| Kanazawa, Susumu| Kumon, Hiromi|
抄録 <p>From January 2004 to March 2007, 308 patients with clinically localized prostate cancer were treated using iodine-125 (125I) seed implantation (permanent brachytherapy) at Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences. We evaluated the treatment’s effi cacy and morbidity in 300 prostate cancer patients who were followed up for more than 1 month after brachytherapy. Based on the National Comprehensive Cancer Network (NCCN) guidelines, patients with a prostate volume of less than 40 ml in transrectal ultrasound imaging were classifi ed as low or intermediate risk. The median patient age was 67 years (range 50 to 79 years), the median prostate-specific antigen (PSA) value before biopsy was 6.95 ng/ml (range 1.13 to 24.7 ng/ml), and the median prostate volume was 24.33 ml (range 9.3 to 41.76 ml). The median follow-up was 18 months (range 1 to 36 months) and the PSA levels decreased in almost all patients after brachytherapy. Although 194 of 300 patients (64.7%) complained of diffi culty in urination, pollakisuria/urgency, miction pain, and/or urinary incontinence, all of which might be associated with radiation prostatitis during the fi rst month after brachytherapy, these symptoms gradually improved. 125I seed implantation brachytherapy is safe and eff ective for localized prostate cancer within short-term follow up.</p>
キーワード localized prostate cancer brachytherapy prostate specific antigen urinary morbidity
Amo Type Original Article
発行日 2008-02
出版物タイトル Acta Medica Okayama
62巻
1号
出版者 Okayama University Medical School
開始ページ 9
終了ページ 13
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
論文のバージョン publisher
査読 有り
PubMed ID 3558
Web of Science KeyUT 000255297600011
JaLCDOI 10.18926/AMO/30950
フルテキストURL fulltext.pdf
著者 Saika, Takashi| Kobayashi, Yasuyuki| Watanabe, Toyohiko| Manabe, Daisuke| Ebara, Shin| Uehara, Shinya| Nasu, Yasutomo| Kumon, Hiromi|
抄録 <p>To evaluate morbidity in Hybrid Radical Prostatectomy (HRP, hybridized laparoscopic and open retropubic radical prostatectomy). The operative and pathological outcomes obtained in 25 consecutive patients who underwent HRP were reviewed. The median operating time was 220min, median blood loss was 550ml, and no patient required an allogenic blood transfusion. No severe postoperative complications were observed. The surgical margin was positive in 12% of all patients, and in 1 patient with pT2 or less (4.5%). These results indicate that HRP is safe and may be able to combine the benefits of both laparoscopic and open procedures.</p>
キーワード prostate cancer radical prostatectomy hybrid surgery morbidity positive surgical margin
Amo Type Original Article
発行日 2008-12
出版物タイトル Acta Medica Okayama
62巻
6号
出版者 Okayama University Medical School
開始ページ 379
終了ページ 384
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
論文のバージョン publisher
査読 有り
Web of Science KeyUT 000262025000004
JaLCDOI 10.18926/AMO/30945
フルテキストURL fulltext.pdf
著者 Kobayashi, Tomoko| Sakaguchi, Masakiyo| Tanimoto, Ryuta| Abarzua, Fernando| Takaishi, Mikiro| Kaku, Haruki| Kataoka, Ken| Saika, Takashi| Nasu, Yasutomo| Miyazaki, Masahiro| Kumon, Hiromi| Huh, Nam-ho|
抄録 <p>We have recently shown that a new therapeutic modality using the REIC/Dkk-3 gene (Ad-REIC) is effective against various human cancers, including those of prostate, testis and breast origins. The aim of the present study was to examine the sensitivity of bladder cancers to Ad-REIC and to clarify the molecular mechanisms that determine sensitivity/resistance. We found that 2 human bladder cancer cell lines, T24 and J82, are resistant to Ad-REIC. In T24 and J82 cells, the ER stress response and activation of JNK were observed in a manner similar to that in the sensitive PC3 cells. Translocation of Bax to mitochondria occurred in PC3 cells but not in T24 and J82 cells. Bcl-2 was remarkably overexpressed in T24 and J82 compared with the expression levels in sensitive cell lines. Treatment of T24 and J82 cells with a Bcl-2 inhibitor sensitized the cells to Ad-REIC-induced apoptosis. The results indicate that some human bladder cancers are resistant to apoptosis induced by overexpression of REIC/Dkk-3, which is at least in part due to up-regulation of Bcl-2. These results provide a basis for possible use of Bcl-2 as a marker of sensitive cancers and to try to sensitize resistant cancers to Ad-REIC by down-regulation of Bcl-2.</p>
キーワード REIC/Dkk-3 bladder cancer apoptosis Bcl-2
Amo Type Original Article
発行日 2008-12
出版物タイトル Acta Medica Okayama
62巻
6号
出版者 Okayama University Medical School
開始ページ 393
終了ページ 401
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
論文のバージョン publisher
査読 有り
Web of Science KeyUT 000262025000006
JaLCDOI 10.18926/AMO/30939
フルテキストURL fulltext.pdf
著者 Kobayashi, Yasuyuki| Saika, Takashi| Manabe, Daisuke| Nasu, Yasutomo| Kumon, Hiromi|
抄録 <p>The purpose of this study is to compare the performance of laparoscopic partial nephrectomy (LPN) with and without clamping of the renal artery and to evaluate the impact of clamping on postoperative renal function. A total of 20 patients underwent LPN, 13 without and 7 with clamping of the renal artery. The 2 groups were compared with respect to complications, blood loss, operative time, mean tumor size, and incidence of positive margins. Renal function was evaluated by pre- and postoperative renal scintigraphy using <sup>99m</sup>Technetium-mercaptoacetyltriglycine (<sup>99m</sup>Tc-MAG3). Intraoperative blood loss was significantly higher in the group without clamping than in the group with clamping (p0.04). In the group with clamping, the median warm ischemic time was 35min (range 25-40min). The serum creatinine values and the renal scintigraphy showed no influence on postoperative renal function with or without clamping. In the group without clamping, 2 cases were showed positive surgical margins. The procedure performed with clamping of the renal artery is superior to the procedure performed without clamping as it provides the advantages of controlling hemorrhaging without injury to renal function and prolonging the surgical time and allowing for more accurate resection of renal tumors.</p>
キーワード laparoscopic partial nephrectomy <sup>99m</sup>Tc-MAG3 renal function
Amo Type Original Article
発行日 2008-08
出版物タイトル Acta Medica Okayama
62巻
4号
出版者 Okayama University Medical School
開始ページ 269
終了ページ 273
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
論文のバージョン publisher
査読 有り
PubMed ID 18766210
Web of Science KeyUT 000258680900007
JaLCDOI 10.18926/AMO/30759
フルテキストURL fulltext.pdf
著者 Kaku, Haruki| Saika, Takashi| Tsushima, Tomoyasu| Nagai, Atsushi| Yokoyama, Teruhiko| Abarzua, Fernando| Ebara, Shin| Manabe, Daisuke| Nasu, Yasutomo| Kumon, Hiromi|
抄録 <p>We evaluated the efficiency and toxicity of estramustine phosphate (ECT), ifosfamide (IFM) and cisplatin (CDDP) combination chemotherapy in twenty-one patients with hormone-refractory prostate cancer (HRPC), for which there is currently no effective treatment. Patients received a daily dose of 560 mg ECT in combination with 1.2 g/m2 IFM on days 1 to 5 and 70 mg/m2 CDDP on day 1. This combination therapy was given every 3 to 4 weeks. An objective response of more than 50% reduction in prostate-specific antigen was observed in 9 of 18 patients (50%), and a more than 50% reduction in bi-dimensionally measurable soft-tissue lesions was observed in 2 of 7 patients (29%). The median duration of response among the cases showing partial response was 40 weeks, while the median duration of response of overall partial-response plus stable cases was 30 weeks. The median survival duration of all cases was 47 weeks. Toxicity was modest and acceptable. In conclusion, the ECT, IFM and CDDP combination chemotherapy regimen is a viable treatment option for HRPC. However, in comparison with our previous chemotherapy regimen of IFM and CDDP, no additional long-lasting effects resulting from the inclusion of ECT could be affirmed.</p>
キーワード hormone-refractory prostate cancer chemotherapy estramustine phosphate ifosfamide cisplatin
Amo Type Article
発行日 2006-02
出版物タイトル Acta Medica Okayama
60巻
1号
出版者 Okayama University Medical School
開始ページ 43
終了ページ 49
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
論文のバージョン publisher
査読 有り
PubMed ID 16508688
Web of Science KeyUT 000235538900005
JaLCDOI 10.18926/AMO/30731
フルテキストURL fulltext.pdf
著者 Mukai, Takashi| Sato, Shuhei| Iguchi, Toshihiro| Mimura, Hidefumi| Yasui, Kotaro| Gobara, Hideo| Saika, Takashi| Nasu, Yasutomo| Kumon, Hiromi| Kanazawa, Susumu|
抄録 We quantitatively evaluated total and individual renal function by technetium-99m mercaptoacetyltriglycine (Tc-99m MAG3) renal scintigraphy before and after radiofrequency ablation (RFA) of renal tumors. Eleven patients who underwent Tc-99m MAG3 renal scintigraphy 1 week before and after RFA were evaluated (7 men and 4 women ; age range : 23-83 years ; mean age : 60.6 years). Five patients had solitary kidneys, and five had normally or minimally functioning contralateral kidneys. One patient had a renal cell carcinoma in the contralateral kidney. One patient with a solitary kidney underwent RFA a second time for a residual tumor. In patients with a solitary kidney, MAG3 clearance decreased after 5 of 6 RFAs, and in patients with a normally functioning contralateral kidney, MAG3 clearance decreased after 4 of 5 RFAs, but no significant differences were observed between before and after treatments. In addition to the total MAG3 clearance, the split MAG3 clearance was evaluated in patients with a normally functioning contralateral kidney. MAG3 clearance decreased in 4 of 5 treated kidneys, while it adversely increased in the contralateral kidneys after 4 of 5 RFAs. No significant differences, however, were observed between before and after treatments. The results of our study revealed no significant differences in sCr, BUN, CCr, or MAG3 clearance between pre- and post-RFA values. These results support data regarding the functional impact and safety of renal RFA in published reports. We evaluated total and individual renal function quantitatively using Tc-99m MAG3 renal scintigraphy before and after treatment. This scintigraphy was very useful in assessing the effects of RFA on renal function.
キーワード kidney renal tumor radiofrequency ablation Tc-99m MAG3 renal scintigraphy individual renal function
Amo Type Article
発行日 2006-04
出版物タイトル Acta Medica Okayama
60巻
2号
出版者 Okayama University Medical School
開始ページ 85
終了ページ 91
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
論文のバージョン publisher
査読 有り
Web of Science KeyUT 000237001900003
著者 那須 保友| 公文 裕巳|
発行日 2002-09-30
出版物タイトル 岡山医学会雑誌
114巻
2号
資料タイプ 学術雑誌論文
著者 小武家 誠| 那須 保友| 公文 裕巳|
発行日 2008-08-01
出版物タイトル 岡山医学会雑誌
120巻
2号
資料タイプ 学術雑誌論文
著者 那須 保友|
発行日 2008-08-01
出版物タイトル 岡山医学会雑誌
120巻
2号
資料タイプ 学術雑誌論文