2024/07/28 更新

写真a

ナカタ コウヘイ
仲田 興平
NAKATA KOHEI
所属
九州大学病院 光学医療診療部 准教授
医学部 医学科(併任)
医学系学府 医学専攻(併任)
医学系学府 医科学専攻(併任)
職名
准教授
電話番号
0926425440
プロフィール
消化器外科手術 肝胆膵外科手術 内視鏡外科手術 ロボット支援下手術 膵臓癌に関する分子生物学的研究 海外機関との交流 膵癌に対する免疫治療の開発 膵癌悪性度におけるオートファジーの関与に関する研究 既存薬を用いたドラッグスクリーニング
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学位

  • 医学博士

経歴

  • 浜の町病院   

    浜の町病院

  • 無し   

研究テーマ・研究キーワード

  • 研究テーマ: 膵癌における免疫細胞改変による化学療法抵抗性の改善

    研究キーワード: 膵癌、免疫

    研究期間: 2021年5月 - 2023年5月

  • 研究テーマ: 膵周囲の解剖に関する研究

    研究キーワード: 膵臓 解剖

    研究期間: 2019年4月 - 2025年6月

  • 研究テーマ: 鏡視下(ロボット、腹腔鏡)膵手術に関する研究

    研究キーワード: ロボット、腹腔鏡、膵切除

    研究期間: 2019年4月 - 2025年6月

  • 研究テーマ: 薬剤スクリーニングによる新規抗がん剤開発、免疫治療開発

    研究キーワード: 薬剤スクリーニング 悪性腫瘍

    研究期間: 2019年4月 - 2024年6月

  • 研究テーマ: オートファジー関連遺伝子の同定

    研究キーワード: オートファジー

    研究期間: 2019年4月 - 2022年6月

  • 研究テーマ: 膵頭十二指腸切除後合併症に関する研究

    研究キーワード: 膵頭十二指腸切除術、合併症

    研究期間: 2019年4月 - 2022年6月

  • 研究テーマ: 膵癌癌間質相互作用におけるオートファジーの役割

    研究キーワード: 膵臓癌 癌ー間質相互作用 オートファジー

    研究期間: 2019年4月 - 2022年3月

  • 研究テーマ: 膵臓星細胞活性化におけるオートファジーの役割.

    研究キーワード: 膵臓癌、 膵星細胞、 オートファジー

    研究期間: 2019年4月 - 2022年3月

受賞

  • 優秀賞

    2012年12月   すこやか健康事業団   低酸素環境下におけるオートファジーを介した癌制御メカニズムの解明

  • Young Investigator Award

    2010年7月   Joint meeting of the international association of pancreatology and Japan pancreatic society  

  • Young Investigator Award

    2009年7月   40th anniversary APA/JPS joint annual meeting  

論文

  • Tumor-infiltrating monocytic myeloid-derived suppressor cells contribute to the development of an immunosuppressive tumor microenvironment in gastric cancer

    Chikanori Tsutsumi, Kenoki Ohuchida, Naoki Katayama, Yutaka Yamada, Shoichi Nakamura, Sho Okuda, Yoshiki Otsubo, Chika Iwamoto, Nobuhiro Torata, Kohei Horioka, Koji Shindo, Yusuke Mizuuchi, Naoki Ikenaga, Kohei Nakata, Eishi Nagai, Takashi Morisaki, Yoshinao Oda, Masafumi Nakamura

    Gastric Cancer   2024年4月

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    記述言語:英語  

    Background
    Gastric cancer (GC) is characterized by an immunosuppressive and treatment-resistant tumor immune microenvironment (TIME). Here, we investigated the roles of different immunosuppressive cell types in the development of the GC TIME.
    Methods
    Single-cell RNA sequencing (scRNA-seq) and multiplex immunostaining of samples from untreated or immune checkpoint inhibitor (ICI)-resistant GC patients were used to examine the correlation between certain immunosuppressive cells and the prognosis of GC patients.
    Results
    The results of the scRNA-seq analysis revealed that tumor-infiltrating monocytic myeloid-derived suppressor cells (TI-M-MDSCs) expressed higher levels of genes with immunosuppressive functions than other immunosuppressive cell types. Additionally, among the immunosuppressive cell types assessed, M-MDSCs were most significantly enriched in GC tissues relative to adjacent normal tissues. The M-MDSCs in GC tissues expressed significantly higher levels of these markers than adjacent normal tissues; moreover, their presence was most strongly associated with a poor prognosis among the immunosuppressive cells. Immediate early response 3 (IER3), which we identified as a differentially expressed gene between M-MDSCs of GC and adjacent normal tissues, was an independent poor prognostic factor in GC patients (P=0.0003). IER3+ M-MDSCs expressed higher levels of genes with immunosuppressive functions than IER3- M-MDSCs and were more abundant in treatment-resistant than -responsive GC patie
    nts.
    Conclusions
    The present study suggests that TI-M-MDSCs, especially IER3+ ones, may play a predominant role in the development of the immunosuppressive and ICI-resistant GC TIME.

    DOI: 10.1007/s10120-023-01456-4

  • MicroRNA-20a in extracellular vesicles derived from duodenal fluid is a possible biomarker for pancreatic ductal adenocarcinoma

    Takashi Taniguchi, Noboru Ideno, Tomoyuki Araki, Shun Miura, Masahiro Yamamoto, Tomoki Nakafusa, Nobuhiro Higashijima, Takeo Yamamoto, Koji Tamura, So Nakamura, Toshiya Abe, Naoki Ikenaga, Kohei Nakata, Kenoki Ohuchida, Yoshinao Oda, Takao Ohtsuka, Masafumi Nakamura

    DEN Open   4 ( 1 )   e333   2024年4月

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    記述言語:英語  

    Background: Pancreatic ductal adenocarcinoma (PDAC) has a high mortality rate owing to its late diagnosis and aggression. In addition, there are relatively few minimally invasive screening methods for the early detection of PDAC, making the identification of biomarkers for this disease a critical priority. Recent studies have reported that microRNAs in extracellular vesicles (EV-miRs) from bodily fluids can be useful for the diagnosis of PDACs. Given this, we designed this study to evaluate the utility of cancer EVs extracted from duodenal fluid (DF) and their resident EV-miRs as potential biomarkers for the detection of PDAC.

    Methods: EV-miRs were evaluated and identified in the supernatants of various pancreatic cancer cell lines (Panc-1, SUIT2, and MIAPaca2), human pancreatic duct epithelial cells, and the DF from patients with PDAC and healthy controls. EVs were extracted using ultracentrifugation and the relative expression of EV-miR-20a was quantified.

    Results: We collected a total of 34 DF samples (27 PDAC patients and seven controls) for evaluation and our data suggest that the relative expression levels of EV-miR-20a were significantly higher in patients with PDAC than in controls (p = 0.0025). In addition, EV-miR-20a expression could discriminate PDAC from control patients regardless of the location of the tumor with an area under the curve values of 0.88 and 0.88, respectively.

    Conclusions: We confirmed the presence of EVs in the DF and suggest that the expression of EV-miR-20a in these samples may act as a potential diagnostic biomarker for PDAC.

    Keywords: duodenal fluid; early detection; extracellular vesicle; microRNA; pancreatic ductal adenocarcinoma.

    DOI: 10.1002/deo2.333

  • Immature stroma and high infiltration of CD15+ cells are predictive markers of poor prognosis in different subsets of patients with pancreatic cancer

    Yutaka Yamada, Takeo Yamamoto, Chikanori Tsutsumi, Takashi Matsumoto, Shoko Noguchi, Yuki Shimada, Kohei Nakata, Kenoki Ohuchida, Masafumi Nakamura, Yoshinao Oda

    Cancer Sci   115 ( 3 )   1001 - 1013   2024年4月

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    記述言語:英語  

    Preoperative treatment is commonly carried out for borderline resectable pancreatic ductal adenocarcinoma (PDAC). However, the relationship between the combination of immune cells in the tumor microenvironment and their intratumoral heterogeneity along with their association with histological findings remains unclear, especially in patients receiving preoperative chemotherapy. We aimed to explore the therapeutic strategies for patients with PDAC with poor prognosis after receiving chemotherapy based on histological and immunological microenvironmental classifications. We investigated the correlation between the prognosis and histological immune microenvironmental factors of patients who initially underwent surgery (n = 100) and were receiving gemcitabine plus nab-paclitaxel (GEM + nabPTX) as preoperative chemotherapy (n = 103). Immune profiles were generated based on immune cell infiltration into the tumor, and their correlation with patient outcomes and histological features was analyzed. Tumor-infiltrating neutrophils (TINs) were identified as independent poor prognostic factors using multivariate analysis in both surgery-first and preoperative chemotherapy groups. The patients were further classified into four groups based on immune cell infiltration into the tumor. Patients with high CD15 infiltration into the tumor and immature stroma at the cancer margins showed the worst prognosis in the preoperative chemotherapy group. The analysis of mRNA expression and immunohistochemical features revealed that CXCR2, the receptor for CXCL8, was correlated with disease-free and overall survival. We inferred that patients with immature stroma at the margins and high infiltration of CD15+ neutrophils within the tumor showed the worst prognosis and they could particularly benefit from treatment with inhibitors targeting CXCR2 or CXCL8.
    Keywords: neoadjuvant chemotherapy; neutrophils; pancreatic cancer; receptors, chemokine; tumor microenvironment.

    DOI: 10.1111/cas.16060

  • Higher incidence of cholelithiasis with Roux-en-Y reconstruction compared with Billroth-I after laparoscopic distal gastrectomy for gastric cancer: a retrospective cohort study

    Taiki Moriyama, Kenoki Ohuchida, Takao Ohtsuka, Koji Shindo, Naoki Ikenaga, Kohei Nakata, Masafumi Nakamura

    Langenbecks Arch Surg   409 ( 1 )   75   2024年4月

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    記述言語:英語  

    Purpose: Cholelithiasis occurs often after gastrectomy. However, no consensus has been established regarding the difference in the incidence of postgastrectomy cholelithiasis with different reconstruction methods. In this study, we examined the frequency of cholelithiasis after two major reconstruction methods, namely Billroth-I (B-I) and Roux-en-Y (R-Y) following laparoscopic distal gastrectomy (LDG) for gastric cancer.
    Methods: Among 696 gastric cancer patients who underwent LDG between April 2000 and March 2017, after applying the exclusion criteria, 284 patients who underwent B-I and 310 who underwent R-Y were examined retrospectively. The estimated incidence of cholelithiasis was compared between the methods, and factors associated with the development of cholelithiasis in the gallbladder and/or common bile duct were investigated.
    Results: During the median follow-up of 61.2 months, 52 patients (8.8%) developed cholelithiasis postgastrectomy; 12 patients (4.2%) after B-I and 40 (12.9%) after R-Y (p = 0.0002). Among them, choledocholithiasis was more frequent in patients who underwent R-Y (n = 11, 27.5%) vs. B-I (n = 1, 8.3%) (p = 0.0056). Univariate and multivariate analyses revealed that male sex, body mass index > 22.5 kg/m2, and R-Y reconstruction were significant predictors of the development of postLDG cholelithiasis.
    Conclusion: Regarding cholelithiasis development, B-I reconstruction should be preferred whenever possible during distal gastrectomy.
    Keywords: Billroth-I; Cholelithiasis; Distal gastrectomy; Gastric cancer; Laparoscopy; Roux-en-Y.

    DOI: 10.1007/s00423-024-03267-2

  • A multi-institutional randomized phase III study comparing minimally invasive distal pancreatectomy versus open distal pancreatectomy for pancreatic cancer; Japan Clinical Oncology Group study JCOG2202 (LAPAN study)

    Naoki Ikenaga, Tadayoshi Hashimoto, Junki Mizusawa, Ryo Kitabayashi, Yusuke Sano, Haruhiko Fukuda, Kohei Nakata, Kazuto Shibuya, Yuji Kitahata, Minoru Takada, Keiko Kamei, Hiroshi Kurahara, Daisuke Ban, Shogo Kobayashi, Hiroaki Nagano, Hajime Imamura, Michiaki Unno, Amane Takahashi, Shintaro Yagi, Hiroshi Wada, Hirofumi Shirakawa, Naoto Yamamoto, Seiko Hirono, Naoto Gotohda, Etsuro Hatano, Masafumi Nakamura, Makoto Ueno; on behalf of the Hepatobiliary and Pancreatic Oncology Group in Japan Clinical Oncology Group

    BMC cancer   24 ( 1 )   231   2024年4月

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    記述言語:英語  

    Background: Minimally invasive distal pancreatectomy (MIDP), including laparoscopic and robotic distal pancreatectomy, has gained widespread acceptance over the last decade owing to its favorable short-term outcomes. However, evidence regarding its oncologic safety is insufficient. In March 2023, a randomized phase III study was launched in Japan to confirm the non-inferiority of overall survival in patients with resectable pancreatic cancer undergoing MIDP compared with that of patients undergoing open distal pancreatectomy (ODP).
    Methods: This is a multi-institutional, randomized, phase III study. A total of 370 patients will be enrolled from 40 institutions within 4 years. The primary endpoint of this study is overall survival, and the secondary endpoints include relapse-free survival, proportion of patients undergoing radical resection, proportion of patients undergoing complete laparoscopic surgery, incidence of adverse surgical events, and length of postoperative hospital stay. Only a credentialed surgeon is eligible to perform both ODP and MIDP. All ODP and MIDP procedures will undergo centralized review using intraoperative photographs. The non-inferiority of MIDP to ODP in terms of overall survival will be statistically analyzed. Only if non-inferiority is confirmed will the analysis assess the superiority of MIDP over ODP.
    Discussion: If our study demonstrates the non-inferiority of MIDP in terms of overall survival, it would validate its short-term advantages and establish its long-term clinical efficacy.
    Trial registration: This trial is registered with the Japan Registry of Clinical Trials as jRCT 1,031,220,705 [ https://jrct.niph.go.jp/en-latest-detail/jRCT1031220705 ].
    Keywords: Clinical trial; Laparoscopy; Minimally invasive surgical procedures; Pancreatectomy; Pancreatic neoplasm.

    DOI: 10.1186/s12885-024-11957-9

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書籍等出版物

  • 【膵癌・胆道癌2023(上)膵癌編-基礎・臨床の最新研究動向-】上皮性腫瘍 浸潤性膵管癌 治療 外科的切除 標準的切除 膵癌に対する腹腔鏡下手術(解説)

    中村聡, 仲田興平, 中村雅史

    日本臨牀社  2023年4月 

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    担当ページ:日本臨牀,81(増刊2):157-162   記述言語:日本語  

  • ロボット支援尾側膵切除術 Gerota筋膜を意識した膵上縁からのアプローチ

    仲田興平, 中村雅史

    医学書院  2023年4月 

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    担当ページ:消化器内視鏡外科手術バイブル-動画で学ぶハイボリュームセンターの手技-,270-274   記述言語:日本語  

  • 膵体尾部切除術

    尾籠晃子, 野入寛子, 阿部俊也, 仲田興平

    メディカ出版  2022年4月 

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    担当ページ:消化器ナーシング2022秋季増刊,210-214   記述言語:日本語  

    DOI: DOI無し

  • Spleen-Preserving Distal Pancreatectomy

    Kohei Nakata, Masafumi Nakamura

    Springer  2022年4月 

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    担当ページ:The IASGO Textbook of Multi-Disciplinary Management of Hepato-Pancreato-Biliary Diseases,353-359   記述言語:英語  

    Concomitant splenectomy has traditionally been performed during conventional distal pancreatectomy because of the anatomic proximity of the pancreas and splenic vessels. Spleen-preserving distal pancreatectomy has been proposed however, subsequent to a more detailed understanding of the function of the spleen and various complications after splenectomy, including severe post-splenectomy infections, thrombocytosis, and increased cancer risk (Di Sabatino et al., The Lancet 378:86–97, 2011; Mellemkjoer et al., Cancer 75:577–583, 1995). Splenic preservation can be performed with splenic vessel preservation (Kimura et al., Surgery 120:885–890, 1996) or Warshaw’s technique (Warshaw, Arch Surg 123:550–553, 1988). Indications, technical methods, and potential pitfalls of spleen-preserving distal pancreatectomy are introduced in this chapter.

    DOI: 10.1007/978-981-19-0063-1_46

  • 膵全摘術

    紫原緋鶴, 井口裕加, 阿部俊也, 仲田興平

    メディカ出版  2022年4月 

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    担当ページ:消化器ナーシング2022秋季増刊,215-218   記述言語:日本語  

    DOI: DOI無し

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講演・口頭発表等

  • 当科における高リスク胃GISTに対する治療成績の検討

    堀岡宏平, 大内田研宙, 進藤幸治, 藤本崇聡, 田村公二, 永吉絹子, 水内祐介, 池永直樹, 仲田興平, 中村雅史

    第124回日本外科学会定期学術集会  2024年4月 

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    開催年月日: 2024年4月

    開催地:常滑市   国名:日本国  

  • 潰瘍性大腸炎に対する経肛門的直腸授動操作併用腹腔鏡下大腸全摘術の有用性

    永吉絹子, 藤本崇聡, 田村公二, 水内祐介, 堀岡宏平, 進藤幸治, 池永直樹, 仲田興平, 大内田研宙, 中村雅史

    第124回日本外科学会定期学術集会  2024年4月 

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    開催年月日: 2024年4月

    開催地:名古屋市   国名:日本国  

  • 膵癌をhot tumorに誘導する遺伝子群の検討

    持田 郁己, 大内田 研宙, 孫紀和, 片山 直樹, 堤 親範, 久野 恭子, 寅田 信博, 阿部俊也, 池永直樹, 仲田 興平, 中村 雅史

    第124回日本外科学会定期学術集会  2024年4月 

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    開催年月日: 2024年4月

    開催地:名古屋市   国名:日本国  

    【はじめに】 膵癌は予後不良な疾患であり、その一因としてT細胞浸潤が乏しい抑制性免疫微小環境、いわゆるcold tumorであることが知られている。他癌腫ではcold tumorをT細胞浸潤のあるhot tumorへと誘導することで免疫チェックポイント阻害剤が奏功したという報告もあり、免疫細胞浸潤機序の解明が待たれている。膵癌組織において、癌細胞のどのような因子が免疫細胞浸潤を促進するのかについては、いまだ明らかになっておらず、本研究ではその解明を目的とした。 【方法】 膵癌自然発癌マウス由来の膵癌細胞株を複数樹立し、それぞれ免疫のあるマウスの膵臓に同所移植した。3週後の膵癌組織を免疫染色し、CD8 T細胞浸潤の程度からhot/cold TIME(腫瘍免疫微小環境)に分類した。各TIMEを誘導する膵癌細胞株を3種類ずつ選出し、RNAシークエンスを行い、hot TIMEを誘導する膵癌細胞の発現変動遺伝子を同定した。さらにヒト膵癌のpublic data (Peng et al, 2019)をシングルセルRNA解析し、発現変動遺伝子のうちよりCD8 T細胞浸潤に関与する可能性のある遺伝子を同定した。 【結果】 マウス移植実験により、細胞数や移植後の観察期間に関わらず、常にhot TIME(腫瘍内にCD8 T細胞浸潤が多い)もしくはcold TIME(T細胞浸潤が乏しいもしくは辺縁にのみ集族する)を呈する細胞株をそれぞれ3種類ずつを同定した。これらの癌細胞株のRNAシークエンスにより、hot TIMEとなる癌細胞株群で22の発現変動遺伝子を抽出した。シングルセルRNA解析を行い、CD8 T細胞の細胞数などから抑制性免疫微小環境を呈する患者群では、これらの遺伝子群の発現が低いことを確認した。また発現変動遺伝子のうちCSF1の発現が高い患者ではCD8T細胞発現細胞数が有意に低いことを明らかにした。 【まとめ】 異なる遺伝子発現の膵癌細胞株の移植では異なる免疫微小環境を呈することを明らかにした。さらにhot TIMEの誘導に関与する可能性のある遺伝子を同定した。

  • 当科において根治術前に化学療法を行った進行胃癌症例の成績

    進藤幸治, 大内田研宙, 堀岡宏平, 藤本崇聡, 田村公二, 永吉絹子, 水内祐介, 井手野昇, 池永直樹, 仲田興平, 中村雅史

    第124回 日本外科学会  2024年4月 

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    開催年月日: 2024年4月

    開催地:名古屋市   国名:日本国  

  • 家族性大腸癌と予後の関係についての検討―単施設後ろ向き観察研究―

    水内祐介, 田辺嘉高, 永吉絹子, 田村公二, 藤本崇聡, 進藤幸治, 仲田興平, 大内田研宙, 久保真, 中村雅史

    第124回日本外科学会定期学術集会  2024年4月 

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    開催年月日: 2024年4月

    開催地:名古屋市   国名:日本国  

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MISC

  • 貧血の精査で発見された空腸pyogenic granuloma の1 例

    大河原一真, 水内祐介, 島田有貴, 山本猛雄, 佐田政史, 永吉絹子, 永井俊太郎, 古賀裕, 鳥巣剛弘, 仲田興平, 大内田研宙, 小田義直, 中村雅史

    日消外会誌   2023年4月

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    記述言語:日本語  

    症例は61 歳の女性で,貧血の精査で行った経口ダブルバルーン内視鏡で空腸中部に頂部に潰瘍を伴う無茎性の隆起性病変を認めた.黒色便,貧血の改善のため腹腔鏡下小腸部分切除を施行した.
    病理診断で炎症細胞浸潤および一部小葉状の毛細血管増生の所見を認め,pyogenic granuloma と診断した.術後は貧血の改善を認めた.Pyogenic granuloma は皮膚や口腔内に好発する肉芽組織型血管腫であり,消化管での発生はまれである.
    易出血性であり消化管出血の原因となりうることから原因不明の消化管出血は本症が原因であることがある.

    DOI: 10.5833/jjgs.2021.0085

  • A case report of sigmoid colon cancer with the inferior mesenteric artery directly originating from the superior mesenteric artery

    Kiyotaka Mizoguchi, Kinuko Nagayoshi, Yusuke Mizuuchi, Koji Tamura, Masafumi Sada, Kohei Nakata, Kenoki Ouchida, Masafumi Nakamura

    Surg Case Rep   2023年4月

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    記述言語:英語  

    Background: There are few reports describing the unusual origin of the inferior mesenteric artery (IMA). We report a rare case of advanced sigmoid colon cancer with the IMA arising from the superior mesenteric artery.
    Case presentation: A 59-year-old man with diarrhea and abdominal distention was diagnosed with advanced sigmoid colon cancer. Colonoscopy revealed a semi-circumferential cancer lesion in the sigmoid colon. Enhanced CT scan and CT angiography showed that the IMA directly originated from the superior mesenteric artery at the level of the second lumbar vertebra. PET-CT suggested metastases in the para-intestinal lymph nodes and the liver, but not in the central lymph nodes along the IMA. Preoperative diagnosis was sigmoid colon cancer cT4aN2aM1a cStage IVA(UICC, 8th edition). We performed laparoscopic complete resection as the radical treatment of the primary region prior to resection of the liver metastases. Intraoperative findings showed that the IMA was running parallel to the abdominal aorta; meanwhile, the colonic autonomic nerve was supplied from the lumbar splanchnic nerve at the caudal side of the duodenum. Central lymph nodes around the colonic autonomic nerve were dissected en bloc with the regional lymph nodes. Pathological radical resection including the regional lymph nodes metastasis was achieved. Two months later, complete resection of the liver metastasis was performed. After the adjuvant chemotherapy, no recurrence was observed 1.5 years after the liver resection was performed.
    Conclusions: Preoperative confirmation of the anatomy helped us to safely complete radical surgery in a patient with unusual bifurcation of the IMA.
    Keywords: IMA anomaly; Laparoscopic low anterior resection; Sigmoid colon cancer.

    DOI: 10.1186/s40792-023-01671-2

  • Nonmass-forming type anorectal cancer with pagetoid spread: A report of two cases

    Masahiro Yamamoto, Yusuke Mizuuchi, Koji Tamura, Masafumi Sada, Kinuko Nagayoshi, Kohei Nakata, Kenoki Ohuchida, Yoshinao Oda, Masafumi Nakamura

    Asian J Endosc Surg   2023年4月

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    記述言語:英語  

    Pagetoid spread (PS) of anorectal cancer is relatively rare and associated with poor prognosis. While a primary tumorous lesion is usually obvious in most PS cases, we experienced two cases of nonmass-forming type anorectal cancer with PS. It remains challenging to decide strategies. In both cases, histological findings of a perianal skin biopsy showed proliferation of atypical cells that were positive for cytokeratin (CK) 7, CK20, and caudal type homeobox 2 and negative for Gross cystic disease fluid protein 15, suggesting PS. Abdominoperineal resection (APR) with extensive anal skin resection was performed in both patients. The pathological diagnosis in each was nonmass-forming type anorectal cancer with PS. Neither has experienced recurrence in postoperative courses. Even nonmass-forming type anorectal cancer with PS could have high malignant potentials. APR with lymph nodes dissection and wide skin excision and regular surveillance might be necessary.
    Keywords: anal canal cancer; nonmass-forming type; pagetoid spread.

    DOI: 10.1111/ases.13217

  • Reconstruction with the right gastroepiploic vein during pancreaticoduodenectomy and total pancreatectomy to prevent left-sided portal hypertension: a report of two cases

    Sanshiro Hatai, Keizo Kaku, Shinsuke Kubo, Yu Sato, Hiroshi Noguchi, Yasuhiro Okabe, Naoki Ikenaga, Kohei Nakata, Masafumi Nakamura

    Surgical Case Reports   2023年4月

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    記述言語:英語  

    Background:
    Left-sided portal hypertension including gastric venous congestion may be caused by ligating the splenic vein during pancreaticoduodenectomy with portal vein resection or total pancreatectomy. The usefulness of reconstruction with the splenic vein has been reported in such cases. However, depending on the site of the tumor and other factors, it may be impossible to leave sufficient length of the splenic vein, making anastomosis difficult. We report two patterns of reconstruction with the right gastroepiploic vein during pancreaticoduodenectomy and total pancreatectomy to prevent left-sided portal hypertension.

    Case presentation:
    The first patient was a 79-year-old man who underwent pancreaticoduodenectomy for pancreatic cancer. The root of the splenic vein was infiltrated by the tumor, and we resected this vein at the confluence of the portal vein. Closure of the portal vein was performed without reconstruction of the splenic vein. To prevent left-sided portal hypertension, we anastomosed the right gastroepiploic vein to the middle colic vein. Postoperatively, there was no suggestion of left-sided portal hypertension, such as splenomegaly, varices, and thrombocytosis.
    The second case was a 63-year-old woman who underwent total pancreatectomy for pancreatic cancer. The splenic vein-superior mesenteric vein confluence was infiltrated by the tumor, and we resected the portal vein, including the confluence. End-to-end anastomosis was performed without reconstruction of the splenic vein. We also divided the left gastric vein, left gastroepiploic vein, right gastroepiploic vein, and right gastric vein, which resulted in a lack of drainage veins from the stomach and severe gastric vein congestion. We anastomosed the right gastroepiploic vein to the left renal vein, which improved the gastric vein congestion. Postoperatively, imaging confirmed short-term patency of the anastomosis site. Although the patient died because of tumor progression 8 months after the surgery, no findings suggested left-sided portal hypertension, such as varices. Reconstruction with the right gastroepiploic vein during pancreaticoduodenectomy and total pancreatectomy is useful to
    prevent left-sided portal hypertension.

    DOI: 10.1186/s40792-023-01773-x

  • Repeated robotic pancreatectomy for recurrent pancreatic metastasis of mesenchymal chondrosarcoma: A case report

    Sayuri Hayashida, Naoki Ikenaga, Kohei Nakata, So Nakamura, Toshiya Abe, Noboru Ideno, Makoto Endo, Shoko Noguchi, Yoshinao Oda, Masafumi Nakamura

    Asian J Endosc Surg   2023年4月

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    記述言語:英語  

    Abstract
    Mesenchymal chondrosarcoma is a rare subset of sarcomas accounting for 3%-10% of all cases of chondrosarcomas. Radical resection is the only curative strategy, even in patients with metastatic tumors. However, data regarding treatment strategies remain limited owing to the small number of cases. Herein, we report a patient who underwent repeated robotic pancreatectomy for recurrent pancreatic metastasis originating from extraskeletal mesenchymal chondrosarcoma of the pelvis. First, robotic pancreaticoduodenectomy with a reconstruction of pancreaticogastrostomy was performed for synchronous pancreatic metastasis 5 months after the primary resection of mesenchymal chondrosarcoma. Ten months after robotic pancreaticoduodenectomy, tumor recurrence was observed at the tail end of the pancreas, which was removed by reperforming robotic distal pancreatectomy. Given the precise tissue manipulation that can be achieved with robotic articulated forceps, the peripheral splenic artery and pancreas were easily isolated and divided in close proximity to the tumor. The central part of the pancreas was preserved. Robotic surgery allowed safe and effective resection of the reconstructed remnant pancreas. The patient survived for 28 months after primary tumor resection. Repeated pancreatectomy with minimally invasive techniques is a feasible and curative treatment for metastatic mesenchymal chondrosarcoma.
    Keywords: mesenchymal chondrosarcoma; robotic distal pancreatectomy; robotic pancreaticoduodenectomy.

    DOI: 10.1111/ases.13240

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所属学協会

  • 日本ロボット外科学会

  • 日本内視鏡外科学会

  • 日本外科学会

  • 日本消化器外科学会

  • 日本肝胆膵外科学会

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学術貢献活動

  • 学術論文等の審査

    役割:査読

    2023年

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    種別:査読等 

    外国語雑誌 査読論文数:7

    日本語雑誌 査読論文数:9

  • 学術論文等の審査

    役割:査読

    2022年

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    種別:査読等 

    外国語雑誌 査読論文数:7

    日本語雑誌 査読論文数:15

  • 学術論文等の審査

    役割:査読

    2021年

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    種別:査読等 

    外国語雑誌 査読論文数:4

    日本語雑誌 査読論文数:10

  • 学術論文等の審査

    役割:査読

    2019年

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    種別:査読等 

    外国語雑誌 査読論文数:1

  • 学術論文等の審査

    役割:査読

    2017年

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    種別:査読等 

    外国語雑誌 査読論文数:1

共同研究・競争的資金等の研究課題

  • オートファジー依存性がん抗原放出機構の解明および免疫提示システムの強化改変

    2023年 - 2026年

    日本学術振興会  科学研究費助成事業  基盤研究(B)

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    担当区分:研究代表者  資金種別:科研費

  • オートファジー依存性がん抗原放出機構の解明および免疫提示システムの強化改変

    研究課題/領域番号:23H02982  2023年 - 2025年

    日本学術振興会  科学研究費助成事業  基盤研究(B)

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    担当区分:研究代表者  資金種別:科研費

  • 膵癌に対する抗腫瘍免疫抑制性環境の改変を目指したCAR-T療法の開発

    2022年 - 2025年

    日本学術振興会  科学研究費助成事業  基盤研究(A)

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    担当区分:研究分担者  資金種別:科研費

  • Validation study of difficulty scoring system in laparoscopic distal pancreatectomy 日韓合同プロジェクト研究 国際共著

    2019年4月 - 2023年6月

    日本肝胆膵外科学会 

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    担当区分:研究分担者 

    日韓のlaparoscopic distal pancreatectomy を集積しこれまでのDS systemのvalidationを行う

  • 膵星細胞活性化におけるオートファジーを標的としたHIT化合物の同定とその評価

    研究課題/領域番号:18H02880  2018年 - 2021年

    日本学術振興会  科学研究費助成事業  基盤研究(B)

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    担当区分:研究代表者  資金種別:科研費

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教育活動概要

  • 大学院生への癌の分子生物学的研究に関する指導
    オートファジー関連遺伝子の同定
    薬剤スクリーニングによる新規抗がん剤開発
    膵がんに対する免疫療法の開発
    学部生への外科学に関する指導

担当授業科目

  • 肝・胆・膵

    2024年10月 - 2025年3月   後期

  • 大学院講義

    2022年10月 - 2023年3月   後期

  • 肝・胆・膵

    2022年10月 - 2023年3月   後期

社会貢献・国際連携活動概要

  • 国際学会に積極的に参加し最新情報を得る努力を行うとともに本邦の膵癌治療、治療法開発に関する報告を海外へむけて行う
    留学生、海外からの研究員に対する研究、臨床指導を行う
    海外機関との共同研究
    モンゴル、キルギスタンにおける鏡視下膵切除術の指導

学内運営に関わる各種委員・役職等

  • 2016年4月 - 2017年3月   部門 中放委員

  • 2012年4月 - 2013年3月   その他 中放委員

  • 2012年4月 - 2013年3月   その他 カルテ委員

  • 2012年4月 - 2013年3月   その他 代議員

専門診療領域

  • 生物系/医歯薬学/外科系臨床医学/外科学一般

臨床医資格

  • 認定医

    日本内視鏡外科学会

  • 専門医

    日本肝胆膵外科学会

医師免許取得年

  • 2000年

特筆しておきたい臨床活動

  • 肝胆膵領域疾患に対する、外来、手術、病棟管理 肝胆膵領域における腹腔鏡手術の普及