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Dive into the research topics where Takumi Hanai is active.

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Featured researches published by Takumi Hanai.


Surgery Today | 1989

Thromboxane as a possible hepatotoxic factor increased by endotoxemia in obstructive jaundice

Takumi Hanai; Jiro Yura; Kenji Ogino; Keiichi Hori; Tatsuya Suzuki

In a study using rats, we investigated whether liver damage induced by endotoxemia in obstructive jaundice is associated with thromboxane (TX) in order to acertain whether its vasoconstrictive and platelet aggregating properties play a role in reducing liver blood flow. The rats were divided into the following 5 groups; a control group, an endotoxin (Et) group, a bile duct ligation (BDL) group, a bile duct ligation and endotoxin (BDL+Et) group and an OKY046 (Thromboxane synthetase inhibitor) treated bile duct ligation+endotoxin (OKY-BDL+Et) group. The blood TXB2 levels in the Et, BDL and BDL+Et groups were higher than those in the control group. The liver TXB2 levels in the Et and BDL+Et groups were also higher than those in the control group. Liver phospholipids and liver blood flow decreased in the BDL+Et group, whereas in the OKY-BDL+Et group they returned close to the control group levels by decreasing the TXB2 levels in both the liver and blood to normal. These results suggest that the high level of TX in the blood and liver tissue may further aggrevate the liver during endotoxemia in obstructive jaundice by inhibiting liver blood flow.


Jpn J Gastroenterol Surg, Nihon Shokaki Geka Gakkai zasshi | 1988

Clinical and experimental studies on enterococcal cholecystitis.

Masayoshi Kitano; Takumi Hanai; Nagao Shinagawa; Fumihiko Kato; Jiro Yura

胆石症患者35例の胆嚢内胆汁の細菌と胆汁酸組成の関係について検討した. 胆汁中に胆汁酸脱抱合菌, 特に腸球菌が存在する場合には, 細菌陰性例や脱抱合菌陰性例に比べて遊離胆汁酸の割合および遊離型DCA濃度が有意に高かった.腸球菌の病原性と遊離胆汁酸の起炎性を比較検討するために, 家兎胆嚢に腸球菌または腸球菌によって脱抱合された胆汁酸を含む胆汁を接種し, 胆嚢炎の作製実験を試みたところ (n=3), 腸球菌接種によって全例胆嚢炎が起きたが, 遊離胆汁酸を含む胆汁の接種のみでは胆嚢炎は起こらなかった. 遊離胆汁酸の胆嚢炎起炎作用に関してはなお検討を要する課題と考える.


Jpn J Gastroenterol Surg, Nihon Shokaki Geka Gakkai zasshi | 1987

A case of China gallbladder with colon carcinoma.

Masayoshi Kitano; Takumi Hanai; Nagao Shinagawa; Hideo Miyaike; Jiro Yura

患者 i54歳,男 . 主訴 :心宙部痛. 家族歴 :特記すべきことなし. 既往歴 :24歳のとき胆襲内結石にて胆石摘出術を受 ける。ただし胆嚢摘出術は施行されていない。 現病歴 :1985年2月 (来院 2カ月前)よ り心寓部痛 あり近医を受診した。疼痛は仙痛様間欠的であり食事 とは関係なく,悪 心,嘔 吐,熱 発,黄 痘は伴っていな かった。便通は 1日 1回であり血便が認められた。大 腸X線 検査にて大腸癌を指摘され, さらに右上腹部の 異常石灰化像を認め当科に紹介された。 入院時現症 :身長157cm,体重53kg,結膜に貧血,黄 痘は認めない。胸部に異常所見なく,腹 部は平坦で圧 痛,筋 性防御,抵 抗を証明せず腫瘤も触知しない。肝 陣の腫大なく,直 腸指診にても異常所見は認めない。 検査成績 :血液検査,肝 機能,腎 機能および尿検査 などの臨床検査値についてはcarcinoembryonic anti・ gen(CEA)が10,7ng/mlと 軽度上昇しているのみであ り他はすべて正常範囲内であった。


Journal of Surgical Research | 1993

Comparison of Prostanoids and Their Precursor Fatty Acids in Human Hepatocellular Carcinoma and Noncancerous Reference Tissues

Takumi Hanai; Takashi Hashimoto; Keiji Nishiwaki; Masayuki Ono; Yoshimi Akamo; Moritsugu Tanaka; Isamu Mizuno; Jiro Yura


Journal of Parenteral and Enteral Nutrition | 1988

A New Apparatus for Chronic Intravenous Infusion in Unrestrained Rats

Hiromitsu Takeyama; Jiro Yura; Hideo Miyaike; Masakazu Ishikawa; Hiroshi Mizuno; Masaaki Taniguchi; Takumi Hanai; Akira Mizuno; Nagao Shinagawa; Fumihiko Kato


Jpn J Gastroenterol Surg, Nihon Shokaki Geka Gakkai zasshi | 1996

Prospective Evaluation from the View Points of Prognosis and Complications after Living Related Liver Transplantation. 12 Cases Experienced in Our Institution.

Takashi Hashimoto; Yasunobu Shimizu; Yoshihiro Otobe; Yoshinori Nakamura; Kouichi Ito; Youichi Matsuo; Michihisa Ueda; Mikinori Sato; Tsukasa Nakamura; Tatsuya Suzuki; Masayuki Ono; Moritsugu Tanaka; Shusaku Hayashi; Takumi Hanai; Tadao Manabe


Nagoya medical journal | 1993

The Utility of the Left Liver Lobe as a Graft for Partial Liver Transplantation : Morphologic Analysis in Autopsy Liver

Munehito Minami; Takashi Hashimoto; Tsukasa Nakamura; Yasunobu Shimizu; Shusaku Hayashi; Moritsugu Tanaka; Takumi Hanai; Jiro Yura


Nagoya medical journal | 1992

Leukotriene B4 : A Possible Hepatotoxic Factor Causing Liver Injury in a Hemorrhagic Shock Model

Moritsugu Tanaka; Takumi Hanai; Takashi Hashimoto


Nagoya medical journal | 1991

Use of Closed Drain Management in the Prevention of Intra-abdominal Infection Following Hepatectomy

Takumi Hanai; Jiro Yura; Keiichi Hori; Takashi Hashimoto; Nagao Shinagawa; Isamu Mizuno; Moritsugu Tanaka; Satoshi Sakurai


Jpn J Gastroenterol Surg, Nihon Shokaki Geka Gakkai zasshi | 1987

Experimental studies on the relationship between liver ischemia and thromboxane.

Takumi Hanai; Jiro Yura; Takashi Hashimoto

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Jiro Yura

Nagoya City University

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