Author Hanaya, Tadashi| Sato, Nobuaki| Yamamoto, Hiroshi|
Published Date 2007-04
Publication Title Heterocycles
Volume volume71
Issue issue3
Content Type Journal Article
Author Hanaya, Tadashi| Yamamoto, Hiroshi|
Published Date 2013-06
Publication Title Pteridines
Volume volume24
Issue issue1
Content Type Journal Article
JaLCDOI 10.18926/AMO/51864
FullText URL 67_5_285.pdf
Author Akita, Mitsuhiro| Hiraoka, Sakiko| Kaji, Eisuke| Takemoto, Koji| Nagahara, Yasuhiro| Yamamoto, Hiroshi| Yamamoto, Kazuhide| Kato, Jun|
Abstract Whether presence or history of extracolonic primary malignancy is a risk for colorectal neoplasia is not fully known. In this study, 26,452 first-time colonoscopy cases were examined using a colonoscopy database. Among the analyzed subjects, 3,026 (11%) subjects had history or concomitance of extracolonic primary malignancy, while the remaining 23,426 subjects did not. Colorectal neoplasia was observed in 39% of all the subjects. A crude comparison showed that the prevalence of any type of colorectal neoplasia was higher in subjects with extracolonic malignancy than in those without (42% vs. 39%, p=0.0012). However, after adjusting for confounding factors, the odds ratios (ORs) of subjects with extracolonic malignancy for having colorectal neoplasia, advanced neoplasia, and cancer were all less than 1.0, and all significantly different from those of subjects without extracolonic malignancy. Analysis according to the type of extracolonic malignancy revealed that gastric cancer cases had a significantly lower risk for colorectal advanced neoplasia (OR:0.81;95% CI:0.67-0.99). Among major malignancies, only esophageal squamous cell cancer cases had increased risk for colorectal neoplasia (OR:1.66;95% CI:1.20-2.29). Patients with presence or history of extracolonic malignancy did not carry a higher risk of occurrence of colorectal neoplasia.
Keywords colorectal cancer colonoscopy risk factor database
Amo Type Original Article
Published Date 2013-10
Publication Title Acta Medica Okayama
Volume volume67
Issue issue5
Publisher Okayama University Medical School
Start Page 285
End Page 292
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2013 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 24145728
Web of Sience KeyUT 000325836100002
Author Hanaya, Tadashi| Koga, Yuko| Kawamoto, Heizan| Yamamoto, Hiroshi|
Published Date 2007-12
Publication Title Heterocycles
Volume volume73
Issue issue1
Content Type Journal Article
Author Hanaya, Tadashi| Tsukui, Hiroyuki| Igi, Naomi| Noguchi, Ayashi| Kawamoto, Heizan| Yamamoto, Hiroshi|
Published Date 2007-04-13
Publication Title Heterocycles
Volume volume72
Issue issue1
Content Type Journal Article
Author Hanaya, Tadashi| Kawaguchi, Masahiro| Sumi, Masakazu| Makino, Kazuo| Tsukada, Keiko| Yamamoto, Hiroshi|
Published Date 2012-12-31
Publication Title Heterocycles
Volume volume86
Issue issue2
Content Type Journal Article
Author Hanaya, Tadashi| Ejiri, Kazumasa| Yamamoto, Hiroshi|
Published Date 2012-01-01
Publication Title Heterocycles
Volume volume84
Issue issue2
Content Type Journal Article
Author Hanaya, Tadashi| Torigoe, Kiyoshi| Soranaka, Kazuyuki| Fujita, Hiroshi| Yamamoto, Hiroshi| Pfleiderer, Wolfgang|
Published Date 2008-09
Publication Title Pteridines
Volume volume19
Issue issue3
Content Type Journal Article
Author Hanaya, Tadashi| Baba, Hiroki| Kanemoto, Mitsunori| Yamamoto, Hiroshi|
Published Date 2008-09-03
Publication Title Heterocycles
Volume volume76
Issue issue1
Content Type Journal Article
Author Hanaya, Tadashi| Baba, Hiroki| Toyota, Hiroki| Yamamoto, Hiroshi|
Published Date 2009-09-19
Publication Title Tetrahedron
Volume volume65
Issue issue38
Content Type Journal Article
Author Hanaya, Tadashi| Yamamoto, Hiroshi| Pfleiderer, Wolfgang|
Published Date 2009-12
Publication Title Pteridines
Volume volume20
Issue issueSpecial Issue
Content Type Journal Article
Author Hanaya, Tadashi| Hattori, Takafumi| Takayama, Daisuke| Yamamoto, Hiroshi|
Published Date 2010-09
Publication Title Pteridines
Volume volume21
Issue issue3
Content Type Journal Article
Author Hanaya, Tadashi| Baba, Hiroki| Ejiri, Kazumasa| Yamamoto, Hiroshi|
Published Date 2010-03-01
Publication Title Heterocycles
Volume volume80
Issue issue2
Content Type Journal Article
Author Hanaya, Tadashi| Baba, Hiroki| Yamamoto, Hiroshi|
Published Date 2009-02-01
Publication Title Heterocycles
Volume volume77
Issue issue2
Content Type Journal Article
Author Hanaya, Tadashi| Baba, Hiroki| Toyota, Hiroki| Yamamoto, Hiroshi|
Published Date 2008-02-25
Publication Title Tetrahedron
Volume volume64
Issue issue9
Content Type Journal Article
Author Hanaya, Tadashi| Nakamura, Yuichi| Yamamoto, Hiroshi|
Published Date 2007-12-31
Publication Title Heterocycles
Volume volume74
Issue issue1
Content Type Journal Article
JaLCDOI 10.18926/AMO/32398
FullText URL fulltext.pdf
Author Ito, Toshio| Yamamoto, Hiroshi| Itoshima, Tatsuya| Ukida, Minoru| Ogawa, Hiromichi| Kitadai, Masahiro| Hattori, Shuzo| Mizutani, Shigeki| Kita, Keiji| Tanaka, Ryoji| Yamauchi, Yasuhiko| Hashimoto, Keiji| Hayashi, Hidehiro| Aono, Kaname| Nagashima, Hideo|
Abstract <p>Computed tomographic arteriography (CTA) was performed in 30 patients with hepatocellular carcinoma (HCC). Detection of HCC by CTA was compared with that of conventional celiac or hepatic arteriography. CT scanning was performed immediately, 30 seconds and 1 min after an injection of 5 to 10 ml of contrast medium into the common or proper hepatic artery. Repeated infusions allowed whole liver sections to be visualized. HCC was localized in 28 of the 30 patients by conventional arteriography, with CTA detecting the masses in 27 of the 28 patients. CTA imaging presented the tumor mass in 1 of the 2 patients missed by arteriography. Conventional arteriography delineated the boundaries of HCC in 15 (50%) of the 30 patients. CTA clearly delineated the masses in 26 (87%) of the 30 patients including 11 patients in which the tumor borders were obscure by conventional arteriography. HCC lesions smaller than 1 cm in diameter were detected only by CTA in 6 (20%) of the patients. It was concluded that CTA is both useful and necessary in the demarcation of small HCC masses.</p>
Keywords computed tomographic arteriography hepatocellular carcinoma hepatic arteriography contrast enhancement
Amo Type Article
Published Date 1983-12
Publication Title Acta Medica Okayama
Volume volume37
Issue issue6
Publisher Okayama University Medical School
Start Page 503
End Page 510
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 6320600
Web of Sience KeyUT A1983RW62800006
JaLCDOI 10.18926/AMO/32068
FullText URL fulltext.pdf
Author Arata, Takiji| Momozaki, Fumitaka| Kazuta, Minoru| Yamamoto, Hiroshi| Sekiba, Kaoru|
Abstract <p>Peripheral blood lymphocytes from patients with gynecologic cancer were tested by micro-cytotoxicity assay against two types of allogeneic cultured cancer cell lines: squamous cell carcinoma and adenocarcinoma. Lymphocytes from cancer patients with squamous cell carcinoma or adenocarcinoma were equally cytotoxic against these target cells. In addition, lymphocytes from healthy controls and myoma patients were also cytotoxic for these cell lines. No significant difference in cytotoxic activities was detected among the cancer patients and controls. However, a good correlation was observed between cytotoxic activity and non-specific lymphocyte responses. It was concluded that this assay sysetm is not suitable for measuring cell-mediated immunity against tumor specific antigens but does estimate non-specific resistance against cancer.</p>
Keywords lymphocyte cytotoxicity cultured cells gynecologic cancers
Amo Type Article
Published Date 1979-06
Publication Title Acta Medica Okayama
Volume volume33
Issue issue3
Publisher Okayama University Medical School
Start Page 197
End Page 204
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 158947
Author Noritsugu, Toshiro| Yamamoto, Hiroshi| Sasaki, Daisuke| Takaiwa, Masahiro|
Published Date 2004-08-04
Publication Title Robot and Human Interactive Communication
Content Type Journal Article