Kotaro Ueno | Researchain

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Featured researches published by Kotaro Ueno.

Gastroenterologia Japonica | 1978

Bioassay of cholecystokinin in the duodenal mucosa.

Shigeki Kataoka; Tsutomu Kamei; Makoto Ishikawa; Masao Tsuboi; Haruhide Shinzawa; Toshiaki Goto; Tsuneo Takahashi; Kotaro Ueno

SummaryCholecystokinin (CCK)-like activities in the duodenal mucosa were measured by bioassay in patients with duodenal ulcer, cholelithiasis and some other gastrointestinal diseases as well as in healthy normal subjects. The mean CCK-like activity of the duodenal mucosa in patients with duodenal ulcer and cholelithiasis was 0.405 Ivy dog units per milligram and 0.376 Ivy dog units per milligram of dry weight of the duodenal mucosa (IDU/mg d.w.), respectively. Both these figures are significantly higher than 0.180 IDU/mg d.w. in normal subjects (p<0.005, p<0.005, respectively). It can be speculated that the CCK-level of the duodenal mucosa in patients with cholelithiasis may be regulated by a feedback mechanism and CCK in patients with duodenal ulcer may act physiologically for the cure of duodenal ulcer.

Acta Gastro-Enterologica Belgica | 1986

ENDOSCOPICALLY CLASSIFIED FOUR TYPES OF ANTIBIOTIC-ASSOCIATED COLITIS

Masayuki Kaneko; Toshio Nakajima; Hisato Tada; Yutaka Suzuki; Toshihiro Suzuki; Hiroshi Masukawa; Tsuneo Takahashi; Kotaro Ueno; Makoto Ishikawa

Acta Gastro-Enterologica Belgica | 1986

BASIC AND CLINICAL EVALUATION OF THE EFFECT OF THROMBIN POWDER ORALLY ADMINISTRATED IN REPEATED, SMALL DOSES FOR THE TREATMENT OF ACUTE UPPER GI TRACT HEMORRHAGE

Tohru Matsuda; Hirotaka Toda; Hiroshi Itasaka; Kotaro Ueno; Makoto Ishikawa; Isao Chinen; Katsuyoshi Itasaka; Keiko Ashizawa; Shuzi Kon; Takashi Monma; Harufumi Ooizumi

Acta Gastro-Enterologica Belgica | 1985

EVALUATION OF REFLECTANCE SPECTROPHOTOMETERY (MODEL TS-200) ON THE MEASUREMENT OF GASTRIC MUCOSAL BLOOD FLOW IN DOG AND HUMAN

Shizuo Tominaga; Kotaro Ueno; Hideki Saito; Toshihiro Suzuki; Makoto Ishikawa

Acta Gastro-Enterologica Belgica | 1985

A CASE OF DUBIN-JOHNSON SYNDROME ASSOCIATED WITH IDIOPATHIC PORTAL HYPERTENSION -ITS CHARACTERISTIC CHANGES IN BOTH LAPAROSCOPIC AND HISTOLOGICAL APPEARANCES

Hiroto Wakabayashi; Haruhide Shinzawa; Nobuo Yamada; Hitoshi Togashi; Hiromichi Simazu; Tsuneo A. Takahashi; Kotaro Ueno; Makoto Ishikawa; Toshiaki Gotoh

Acta Gastro-Enterologica Belgica | 1984

A CASE OF EARLY GASTRIC CANCER ASSOCIATED WITH BOWEN'S DISEASE

Yutaka Suzuki; Hitoshi Togashi; Toshihiro Suzuki; Hisato Tada; Masayuki Kaneko; Shin Agitzu; Junichi Sato; Junichi Wada; Tsuneo Takahashi; Kotaro Ueno; Makoto Ishikawa

Acta Gastro-Enterologica Belgica | 1981

ENDOSCOPIC OBSERVATION OF HEALING PROCESS OF ANTIBIOTIC-ASSOCIATED COLITIS

Toshio Nakajima; Masao Tsuboi; Junichi Wada; Kotaro Ueno; Makoto Ishikawa

Acta Gastro-Enterologica Belgica | 1981

WHAT ARE THE POINTS TO BE IMPROVED IN FIVERDUODENOSCOPE FOR ERCP

Tohru Matsuda; Masao Tsuboi; Masayuki Kaneko; Haruhide Shinzawa; Kotaro Ueno; Makoto Ishikawa; Harufumi Ohizumi; Akihiro Furfsawa; Katsuyoshi Itasaka; Shingo Miyazaki

Acta Gastro-Enterologica Belgica | 1980

A CASE REPORT OF A MALIGNANT ACANTHOSIS NIGRICANS ASSOCIATED WITH AN ESOPHAGEAL PAPILLONATOSIS AND A RENAL PELVIC CANCER.

Junichi Sato; Shin Agitzu; Yoshihiro Abe; Hiromichi Shimazu; Junichi Wada; Masao Tsuboi; Toshiaki Goto; Kotaro Ueno; Makoto Ishikawa; Kenji Kawase; Kazuo Terashima; Akio Kaneko

Acta Gastro-Enterologica Belgica | 1979