
北沢 将人 (キタザワ マサト)
学術研究院(医学系(附属病院))
医学部附属病院 消化器・移植・小児外科
講師
研究者情報
研究キーワード
- 大腸癌, 消化器癌, KRAS変異, RAS/MAPKシグナル, 分子標的薬, 薬剤耐性, 個別化医療, ロボット支援下手術, 腹腔鏡下手術, 直腸癌, ストーマリハビリテーション
ホームページURL
経歴
- 2016年 - 現在
信州大学医学部附属病院, 消化器外科, 講師 - 2015年 - 2016年
信州大学医学部附属病院, 消化器外科, 助教 - 2014年 - 2015年
信州大学医学部附属病院, 消化器外科, 医員 - 2012年 - 2014年
飯田市立病院, 外科 - 2008年 - 2012年
信州大学大学院医学系研究科分子腫瘍学, 大学院生 - 2007年 - 2008年
信州大学医学部附属病院 外科1, 医員 - 2005年 - 2007年
独立行政法人国立松本病院, 外科 - 2004年 - 2005年
長野県立木曽病院, 外科 - 2003年 - 2004年
飯田市立病院, 外科 - 2002年 - 2003年
飯山赤十字病院, 外科 - 2001年 - 2002年
信州大学医学部附属病院, 外科2, 医員
研究活動情報
論文
- Prognostic impact of vascular CXCR4 expression in colorectal carcinoma.
Hiroshi Sawaguchi; Takeshi Uehara; Mai Iwaya; Shiho Asaka; Shinsuke Sugenoya; Takahiro Yoshizawa; Tomoyuki Nakajima; Shotaro Komamura; Masato Kamakura; Yugo Iwaya; Masato Kitazawa; Yuji Soejima; Hiroyoshi Ota; Tadanobu Nagaya
Experimental and molecular pathology, 146, 105043-105043, 2026年06月

- High INHBB Expression Shapes an Immunosuppressive Tumor Microenvironment and Predicts Poor Prognosis in Colorectal Carcinoma.
Hiroshi Sawaguchi; Takeshi Uehara; Mai Iwaya; Shiho Asaka; Tomoyuki Nakajima; Shotaro Komamura; Shunsuke Imamura; Yugo Iwaya; Shinsuke Sugenoya; Masato Kitazawa; Yuji Soejima; Hiroyoshi Ota; Tadanobu Nagaya
Digestive diseases and sciences, 71(5), 1821-1834, 2026年05月

- The Correlation of PBK Expression with an Immune-Activated Tumor Microenvironment and Outcome in Colorectal Cancer.
Hiroshi Sawaguchi; Takeshi Uehara; Mai Iwaya; Shiho Asaka; Tomoyuki Nakajima; Shotaro Komamura; Shunsuke Imamura; Yugo Iwaya; Shinsuke Sugenoya; Masato Kitazawa; Yuji Soejima; Hiroyoshi Ota; Tadanobu Nagaya
Cancers, 18(3), 2026年01月

- High Incidence of Asymptomatic Pulmonary Embolism Detected on Early Postoperative CT After Thoracoscopic Esophagectomy for Esophageal Cancer: A Prospective Observational Study.
Satoshi Nakamura; Masato Kitazawa; Yuta Yamamoto; Satoru Miyazaki; Nao Hondo; Masahiro Kataoka; Hirokazu Tanaka; Naoki Ishizaka; Tadaaki Shimizu; Yuji Soejima
Anticancer research, 46(1), 371-383, 2026年01月

- Megacolon Associated with Multiple Endocrine Neoplasia Type 2B: A Case Successfully Managed with Ileostomy
Takeshi Ikeda; Nao Hondo; Masato Kitazawa; Satoshi Nakamura; Yuta Yamamoto; Satoru Miyazaki; Masahiro Kataoka; Hirokazu Tanaka; Naoki Ishizaka; Tadaaki Shimizu; Masatsugu Kuroiwa; Naoya Yamamoto; Yuji Soejima
Surgical Case Reports, 12(1), 2026年

- A Case with a Pathological Course Resembling Ulcerative Colitis after Rectal Cancer Surgery with Diversion
Tadaaki Shimizu; Masato Kitazawa; Atsuhiro Hirayama; Satoshi Nakamura; Yuta Yamamoto; Satoru Miyazaki; Nao Hondo; Masahiro Kataoka; Hirokazu Tanaka; Masatsugu Kuroiwa; Naoki Ishizaka; Naoya Yamamoto; Yuji Soejima
Surgical Case Reports, 12(1), 2026年

- High KCNJ14 expression is associated with an immunosuppressive tumor microenvironment and advanced pathological features: An RNA in situ hybridization-based analysis of colorectal carcinoma.
Hiroshi Sawaguchi; Takeshi Uehara; Mai Iwaya; Shiho Asaka; Tomoyuki Nakajima; Shotaro Komamura; Shunsuke Imamura; Yugo Iwaya; Shinsuke Sugenoya; Masato Kitazawa; Yuji Soejima; Hiroyoshi Ota; Tadanobu Nagaya
Experimental and molecular pathology, 144, 105005-105005, 2025年12月

- Effect of Monofilament Sutures on Incisional Hernia After Laparoscopic Colorectal Surgery: A Focus on Patients With Umbilical Hernia.
Hirokazu Tanaka; Masato Kitazawa; Satoshi Nakamura; Yuta Yamamoto; Satoru Miyazaki; Nao Hondo; Masahiro Kataoka; Naoki Ishizaka; Tadaaki Shimizu; Ryohei Miyashita; Yuji Soejima
Anticancer research, 45(6), 2661-2668, 2025年06月

- The Clinical Outcomes of Preoperative Self‐Expandable Metal Stent Placement as Bridge to Surgery for Obstructive Colorectal Cancer
Ryosuke Aoki; Nao Hondo; Masato Kitazawa; Satoshi Nakamura; Makoto Koyama; Masahiro Kataoka; Hirokazu Tanaka; Takuya Iguchi; Yonghan Park; Yuji Soejima
Cancer Reports, 8(6), e70255, 2025年06月

- Targeting KRAS‐mutant pancreatic cancer through simultaneous inhibition of KRAS, MEK, and JAK2
Satoru Miyazaki; Masato Kitazawa; Satoshi Nakamura; Makoto Koyama; Yuta Yamamoto; Nao Hondo; Masahiro Kataoka; Hirokazu Tanaka; Michiko Takeoka; Daisuke Komatsu; Yuji Soejima
Molecular Oncology, 19(2), 377-390, 2025年02月

- Outcomes of Older Patients Undergoing Surgery for Esophageal Squamous Cell Carcinoma.
Takuya Iguchi; Satoshi Nakamura; Masato Kitazawa; Yuta Yamamoto; Satoru Miyazaki; Nao Hondo; Masahiro Kataoka; Hirokazu Tanaka; Ryosuke Aoki; Park Yonghan; Yuji Soejima
In vivo (Athens, Greece), 39(4), 2286-2294, 2025年

- 術前のTAEにより安全に切除し得た巨大孤立性線維性腫瘍の1例
西山 大貴; 北沢 将人; 中村 聡; 宮崎 暁; 片岡 将宏; 田中 宏和; 石坂 直毅; 清水 忠朗; 宮下 遼平; 平田 廉人; 副島 雄二
日本臨床外科学会雑誌, 85(増刊), S298-S298, 2024年10月 - Interleukin-6 Stromal Expression is Correlated with Epithelial-Mesenchymal Transition at Tumor Budding in Colorectal Cancer.
Takeshi Uehara; Koichi Sato; Mai Iwaya; Shiho Asaka; Tomoyuki Nakajima; Tadanobu Nagaya; Masato Kitazawa; Hiroyoshi Ota
International journal of surgical pathology, 32(2), 304-309, 2024年04月

- Short-term outcomes of laparoscopic and robotic distal gastrectomy for gastric cancer: Real-world evidence from a large-scale inpatient database in Japan.
Nao Hondo; Yuta Yamamoto; Takayo Nakabe; Tetsuya Otsubo; Masato Kitazawa; Satoshi Nakamura; Makoto Koyama; Satoru Miyazaki; Masahiro Kataoka; Yuji Soejima
Journal of surgical oncology, 129(5), 922-929, 2024年04月

- Transmesenteric approach for laparoscopic endoscopic cooperative surgery for a duodenal adenoma located in the third portion of the duodenum
Futoshi Muranaka; Masato Kitazawa; Yugo Iwaya; Shigeo Tokumaru; Satoshi Nakamura; Makoto Koyama; Yuta Yamamoto; Nao Hondo; Yuji Soejima
Asian Journal of Endoscopic Surgery, 16(4), 822-826, 2023年10月

- Comparison of Short-term Outcomes Between Esophageal Bypass Surgery and Self-expanding Stent Insertion in Esophageal Cancer: A Propensity Score-matched Analysis Using a Large-scale Inpatient Database.
Yuta Yamamoto; Masato Kitazawa; Tetsuya Otsubo; Shigeo Tokumaru; Satoshi Nakamura; Makoto Koyama; Nao Hondo; Masahiro Kataoka; Kai Seharada; Yuji Soejima
Surgical laparoscopy, endoscopy & percutaneous techniques, 33(4), 395-401, 2023年08月

- Gastric glomus tumor resection using laparoscopic endoscopic cooperative surgery: A case report.
Yasuhiro Iijima; Shigeo Tokumaru; Masato Kitazawa; Satoshi Nakamura; Makoto Koyama; Yuta Yamamoto; Takehito Ehara; Nao Hondo; Satoru Miyazaki; Yuji Soejima
Asian journal of endoscopic surgery, 16(3), 496-499, 2023年07月

- MEK inhibitor and anti-EGFR antibody overcome sotorasib resistance signals and enhance its antitumor effect in colorectal cancer cells
Nao Hondo; Masato Kitazawa; Makoto Koyama; Satoshi Nakamura; Shigeo Tokumaru; Satoru Miyazaki; Masahiro Kataoka; Kai Seharada; Yuji Soejima
Cancer Letters, 567, 216264-216264, 2023年07月

- Importance of intraoperative indocyanine green imaging in the management of non-occlusive mesenteric ischemia: a case report
Ryohei Miyashita; Masato Kitazawa; Shigeo Tokumaru; Satoshi Nakamura; Makoto Koyama; Yuta Yamamoto; Nao Hondo; Satoru Miyazaki; Yuji Soejima
Surgical Case Reports, 9(1), 31-31, 2023年02月

- High expression of LGR6 is a poor prognostic factor in esophageal carcinoma.
Takehito Ehara; Takeshi Uehara; Takahiro Yoshizawa; Yasuhiro Kinugawa; Tomoyuki Nakajima; Shota Kobayashi; Shiho Asaka; Mai Iwaya; Tadanobu Nagaya; Masato Kitazawa; Hiroyoshi Ota; Yuji Soejima
Pathology, research and practice, 242, 154312-154312, 2023年02月

- Hereditary diffuse gastric cancer in a Japanese family with CDH1 mutation three case reports.
Futoshi Muranaka; Emiko Kise; Shigeo Tokumaru; Masato Kitazawa; Yusuke Miyagawa; Tomoaki Suga; Takeshi Uehara; Mai Iwaya; Shota Kobayashi; Midori Sato; Daisuke Gomi; Hidetaka Yamada; Haruhiko Sugimura; Tomoki Kosho; Yuji Soejima; Tomonobu Koizumi
Discover oncology, 14(1), 14-14, 2023年01月

- RhoA G17E/Vav1 Signaling Induces Cancer Invasion via Matrix Metalloproteinase-9 in Gastric Cancer
Satoshi Nakamura; Masato Kitazawa; Yusuke Miyagawa; Makoto Koyama; Satoru Miyazaki; Nao Hondo; Futoshi Muranaka; Shigeo Tokumaru; Yuta Yamamoto; Takehito Ehara; Tomio Matsumura; Michiko Takeoka; Yuji Soejima
Technology in Cancer Research & Treatment, 22, 15330338221146024-15330338221146024, 2023年01月

- Risk factors for umbilical incisional hernia after laparoscopic colorectal surgery
Hirokazu Tanaka; Masato Kitazawa; Yusuke Miyagawa; Futoshi Muranaka; Shigeo Tokumaru; Satoshi Nakamura; Makoto Koyama; Yuta Yamamoto; Nao Hondo; Takehito Ehara; Satoru Miyazaki; Masatsugu Kuroiwa; Yuji Soejima
ANZ Journal of Surgery, 92(12), 3219-3223, 2022年12月

- Intraoperative visualization of morphological patterns of the thoracic duct by subcutaneous inguinal injection of indocyanine green in esophagectomy for esophageal cancer
Shigeo Tokumaru; Masato Kitazawa; Satoshi Nakamura; Makoto Koyama; Yuji Soejima
Annals of Gastroenterological Surgery, 6(6), 873-879, 2022年11月

- Comparison of Clinical Outcomes and Safety Between Open and Laparoscopic Surgery for Adhesive Small Bowel Obstruction: A Propensity-Matched Analysis of a National Inpatient Database.
Yuta Yamamoto; Masato Kitazawa; Tetsuya Otsubo; Yusuke Miyagawa; Shigeo Tokumaru; Satoshi Nakamura; Makoto Koyama; Takehito Ehara; Nao Hondo; Yasuhiro Iijima; Yuji Soejima
Journal of laparoendoscopic & advanced surgical techniques. Part A, 32(10), 1064-1070, 2022年10月

- Impact of seasonal and meteorological factors on the incidence of adhesive small bowel obstruction: A large-scale study using a national inpatient database.
Yuta Yamamoto; Masato Kitazawa; Tetsuya Otsubo; Yusuke Miyagawa; Shigeo Tokumaru; Satoshi Nakamura; Makoto Koyama; Takehito Ehara; Nao Hondo; Yuji Soejima
Annals of gastroenterological surgery, 6(4), 569-576, 2022年07月

- Laparoscopic left-sided mesocolic leaf flap repair for pelvic reconstruction after sacral tissue necrosis. A case report.
Makoto Koyama; Yusuke Miyagawa; Masato Kitazawa; Atsushi Tanaka; Daisuke Yanagisawa; Futoshi Muranaka; Shigeo Tokumaru; Satoshi Nakamura; Yuta Yamamoto; Nao Hondo; Shugo Takahata; Hirokazu Tanaka; Masatsugu Kuroiwa; Yuji Soejima
Asian journal of endoscopic surgery, 15(2), 363-367, 2022年04月

- Association of Serum Creatinine Level with Prognosis of Laparotomy for Acute Mesenteric Ischemia after Cardiovascular Surgery
Yusuke Miyagawa; Yuta Yamamoto; Masato Kitazawa; Shigeo Tokumaru; Satoshi Nakamura; Makoto Koyama; Takehito Ehara; Nao Hondo; Yasuhiro Iijima; Yuji Soejima
Surgery Research and Practice, 2022, 1-7, 2022年03月

- A case of appendiceal ganglioneuroma in neurofibromatosis type 1
Tadaaki Shimizu; Nao Hondo; Yusuke Miyagawa; Masato Kitazawa; Futoshi Muranaka; Shigeo Tokumaru; Satoshi Nakamura; Makoto Koyama; Yuta Yamamoto; Takehito Ehara; Satoru Miyazaki; Yasuhiro Iijima; Mai Iwaya; Yuji Soejima
Surgical Case Reports, 7(1), 218-218, 2021年12月

- Mesh Migration into the Neobladder and Ileum with Complicated Fistula Formation following Incisional Hernia Repair
Masatsugu Kuroiwa; Masato Kitazawa; Yusuke Miyagawa; Futoshi Muranaka; Shigeo Tokumaru; Satoshi Nakamura; Makoto Koyama; Yuta Yamamoto; Nao Hondo; Takehito Ehara; Satoru Miyazaki; Hirokazu Tanaka; Yuji Soejima
Case Reports in Surgery, 2021, 5683621-5683621, 2021年10月

- Drug sensitivity profile of minor KRAS mutations in colorectal cancer using mix culture assay: The effect of AMG-510, a novel KRAS G12C selective inhibitor, on colon cancer cells is markedly enhanced by the combined inhibition of MEK and BCL-XL.
Masato Kitazawa; Yusuke Miyagawa; Makoto Koyama; Satoshi Nakamura; Nao Hondo; Satoru Miyazaki; Futoshi Muranaka; Shigeo Tokumaru; Yuta Yamamoto; Takehito Ehara; Masatsugu Kuroiwa; Hirokazu Tanaka; Daisuke Komatsu; Michiko Takeoka; Yuji Soejima
Molecular and clinical oncology, 15(1), 148-148, 2021年07月

- A case of sigmoidectomy for sigmoid colon cancer with severe pulmonary arterial hypertension associated with mixed tissue connected disease: A case report.
Yuki Takagi; Makoto Koyama; Yusuke Miyagawa; Masato Kitazawa; Kazuhiro Kimura; Yuji Soejima
International journal of surgery case reports, 83, 105906-105906, 2021年06月

- A perpendicular approach to mesorectal excision using an articulating tissue sealer in laparoscopic sigmoidectomy-a video vignette.
Yuta Yamamoto; Yusuke Miyagawa; Masato Kitazawa; Shigeo Tokumaru; Futoshi Muranaka; Yuji Soejima
Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland, 23(4), 1008-1008, 2021年04月

- Association of feces sign with prognosis of non-emergency adhesive small bowel obstruction.
Yuta Yamamoto; Yusuke Miyagawa; Masato Kitazawa; Hirokazu Tanaka; Masatsugu Kuroiwa; Nao Hondo; Makoto Koyama; Satoshi Nakamura; Shigeo Tokumaru; Futoshi Muranaka; Yuji Soejima
Asian journal of surgery, 44(1), 292-297, 2021年01月

- Lymphocyte-to-Monocyte Ratio Is a Predictive Biomarker of Response to Treatment with Nivolumab for Gastric Cancer
Shigeo Tokumaru; Tomonobu Koizumi; Yasushi Sekino; Nobumichi Takeuchi; Shinji Nakata; Yusuke Miyagawa; Masato Kitazawa; Futoshi Muranaka; Satoshi Nakamura; Makoto Koyama; Yuta Yamamoto; Takehito Ehara; Nao Hondo; Yuji Soejima
Oncology, 99(10), 632-640, 2021年

- Low‑dose trametinib and Bcl‑xL antagonist have a specific antitumor effect in KRAS‑mutated colorectal cancer cells.
Makoto Koyama; Masato Kitazawa; Satoshi Nakamura; Tomio Matsumura; Satoru Miyazaki; Yusuke Miyagawa; Futoshi Muranaka; Shigeo Tokumaru; Masahiro Okumura; Yuta Yamamoto; Takehito Ehara; Nao Hondo; Shugo Takahata; Michiko Takeoka; Shin-Ichi Miyagawa; Yuji Soejima
International journal of oncology, 57(5), 1179-1191, 2020年11月

- Impact of barometric pressure on adhesive small bowel obstruction: a retrospective study.
Yuta Yamamoto; Yusuke Miyagawa; Masato Kitazawa; Hirokazu Tanaka; Masatsugu Kuroiwa; Nao Hondo; Makoto Koyama; Satoshi Nakamura; Shigeo Tokumaru; Futoshi Muranaka; Yuji Soejima
BMC surgery, 20(1), 168-168, 2020年07月

- Treatment of Rectal Cancer-Induced Disseminated Carcinomatosis of the Bone Marrow with FOLFOX plus Cetuximab and Panitumumab
Takehito Ehara; Masato Kitazawa; Nao Hondo; Shugo Takahata; Yuta Yamamoto; Makoto Koyama; Motohiro Okumura; Satoshi Nakamura; Shigeo Tokumaru; Futoshi Muranaka; Yusuke Miyagawa; Yuji Soejima
Case Reports in Oncology, 13(1), 145-152, 2020年02月

- Fascin1 suppresses RIG-I-like receptor signaling and interferon-β production by associating with IκB kinase ϵ (IKKϵ) in colon cancer.
Tomio Matsumura; Shigeaki Hida; Masato Kitazawa; Chifumi Fujii; Akira Kobayashi; Michiko Takeoka; Shun-Ichiro Taniguchi; Shin-Ichi Miyagawa
The Journal of biological chemistry, 293(17), 6326-6336, 2018年04月

- High incidence of other primary malignancies in patients with synchronous multiple gastric cancers "a multi-center retrospective cohort study".
Daisuke Takeuchi; Naohiko Koide; Akira Suzuki; Fumiaki Shimizu; Yoshinori Koyama; Takehito Ehara; Yuta Yamamoto; Makoto Koyama; Satoshi Nakamura; Masato Kitazawa; Yusuke Miyagawa; Shinichi Miyagawa
Oncotarget, 9(29), 20605-20616, 2018年04月

- Survival pathway of cholangiocarcinoma via AKT/mTOR signaling to escape RAF/MEK/ERK pathway inhibition by sorafenib.
Kenta Yokoi; Akira Kobayashi; Hiroaki Motoyama; Masato Kitazawa; Akira Shimizu; Tsuyoshi Notake; Takahide Yokoyama; Tomio Matsumura; Michiko Takeoka; Shin-Ichi Miyagawa
Oncology reports, 39(2), 843-850, 2018年02月

- Primary malignant melanoma of esophagus following chemoradiotherapy for esophageal squamous cell carcinoma: report of a case.
Shinichiro Imai; Akira Suzuki; Yuta Yamamoto; Makoto Koyama; Satoshi Sugiyama; Masato Kitazawa; Yusuke Miyagawa; Shinichi Miyagawa
Clinical journal of gastroenterology, 10(4), 336-341, 2017年08月

- ASC Induces Apoptosis via Activation of Caspase-9 by Enhancing Gap Junction-Mediated Intercellular Communication
Masato Kitazawa; Shigeaki Hida; Chifumi Fujii; Shun’ichiro Taniguchi; Kensuke Ito; Tomio Matsumura; Nagisa Okada; Takashi Sakaizawa; Akira Kobayashi; Michiko Takeoka; Shin-ichi Miyagawa
PLOS ONE, 12(1), e0169340, 2017年01月

- Surgery for chronic mesh infection occurred 10 years after sacrectomy - Mesh resection and mesentric leaf repair: A case report.
Makoto Koyama; Yusuke Miyagawa; Yuta Yamamoto; Masato Kitazawa; Akira Suzuki; Satoshi Ishizone; Shinichi Miyagawa
International journal of surgery case reports, 30, 215-217, 2017年
