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Alterations in the human epidermal growth factor receptor 2-phosphatidylinositol 3-kinase-v-Akt pathway in gastric cancer

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World Journal of Gastroenterology 2012年第45期18卷 6577-6586页

作者： Yasutaka Sukawa Hiroyuki Yamamoto Katsuhiko Nosho Hiroaki Kunimoto Hiromu Suzuki Yasushi Adachi Mayumi Nakazawa Takayuki Nobuoka Mariko Kawayama Masashi Mikami Takashi Matsuno tadashi hasegawa Koichi Hirata Kohzoh Imai Yasuhisa Shinomura First Department of Internal Medicine Sapporo Medical University School of MedicineSapporo 60-8543Japan Department of Molecular Biology Sapporo Medical University School of MedicineSapporo 60-8543Japan First Department of Surgery Sapporo Medical University School of MedicineSapporo 60-8543Japan Department of Gastroenterology JR Sapporo HospitalSapporo 60-8543Japan Department of Surgery Sapporo Gekakinen HospitalSapporo 60-8543Japan Department of Surgical Pathology Sapporo Medical University HospitalSapporo 60-8543Japan Division of Cancer Research The Institute of Medical ScienceThe University of TokyoTokyo 108-8639Japan

AIM:To investigate human epidermal growth factor receptor 2(HER2)-phosphatidylinositol 3-kinase(PI3K)-vAkt murine thymoma viral oncogene homolog signaling ***:We analyzed 231 formalin-fixed,paraffinembedded gastric cancer tissue specimens from Japanese patients who had undergone surgical *** patients' age,sex,tumor location,depth of invasion,pathological type,lymph node metastasis,and pathological stage were determined by a review of the medical *** of HER2 was analyzed by immunohistochemistry(IHC) using the HercepTest TM *** criteria for HER2 positivity(0,1+,2+,and 3+) were *** that scored 3+ were considered *** of phospho Akt(pAkt) was also analyzed by *** were considered pAkt-positive when the percentage of positive tumor cells was 10% or ***3K,catalytic,alpha polypeptide(PIK3CA) mutations in exons 1,9 and 20 were analyzed by ***-Barr virus(EBV) infection was analyzed by in situ hybridization targeting EBV-encoded small RNA(EBER) with an EBER-RNA *** instability(MSI) was analyzed by polymerase chain reaction using the mononucleotide markers BAT25 and ***:HER2 expression levels of 0,1+,2+ and 3+ were found in 167(72%),32(14%),12(5%) and 20(8.7%) samples,***2 overexpression(IHC 3+) significantly correlated with intestinal histological type(15/20 vs 98 /205,P = 0.05).PIK3CA mutations were present in 20 cases(8.7%) and significantly correlated with MSI(10/20 vs 9/211,P < 0.01).The mutation frequency was high(21%) in T4 cancers and very low(6%) in T2 *** in exons 1,9 and 20 were detected in 5(2%),9(4%) and 7(3%) cases,*** new types of PIK3CA mutation,R88Q and R108H,were found in *** PIK3CA mutations were heterozygous missense singlebase substitutions,the most common being H1047R(6/20,30%) in *** cancers(8%) were EBV-positive and this positivity significantly correlated with a diffu

关键词： Human epidermal growth factor receptor 2 Phosphatidylinositol 3-kinase Catalytic Alpha polypep-tide Epstein-Barr virus Aid: Gastric cancer

COVID-19-associated disseminated mucormycosis:An autopsy case report

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World Journal of Clinical Cases 2022年第28期10卷 10358-10365页

作者： Daisuke Kyuno Terufumi Kubo Mitsuhiro Tsujiwaki Shintaro Sugita Michiko Hosaka Hazuki Ito Keisuke Harada Akira Takasawa Yusaku Kubota Kumi Takasawa Yusuke Ono Kazufumi Magara Eichi Narimatsu tadashi hasegawa Makoto Osanai Department of Pathology Sapporo Medical UniversitySapporo 0608556HokkaidoJapan Department of Surgical Pathology Sapporo Medical UniversitySapporo 0608556Japan Department of Emergency Medicine Sapporo Medical UniversitySapporo 0608556Japan

BACKGROUND Reports of mucormycosis,an infectious disease that commonly affects immunocompromised individuals,have increased during the ongoing coronavirus disease 2019(COVID-19) *** mucormycosis associated with COVID-19 is rare but fatal and is characterized by an aggressive clinical course and delayed *** report documents a case of disseminated mucormycosis after COVID-19 *** is a rare pathological autopsy report on COVID-19-associated *** SUMMARY A 58-year-old man was transferred to our hospital with severe COVID-19 *** treatment for acute respiratory distress syndrome,he developed intra-abdominal bleeding that required a right hemicolectomy and ileostomy for *** ileostoma and surgical wound developed necrosis followed by sepsis and multi-organ failure,which led to *** autopsy revealed multiple thrombi associated with Rhizopus oryzae infection,which led to the necrosis of multiple infected *** Early suspicion and diagnosis followed by treatment are keys to better outcomes of mucormycosis in patients with severe COVID-19.

关键词： COVID-19 Mucormycosis Mucorales infection Rhizopus oryzae SARS-Co V-2 Case report

Case series of three patients with hereditary diffuse gastric cancer in a single family:Three case reports and review of literature

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World Journal of Gastroenterology 2020年第42期26卷 6689-6697页

作者： Masahiro Hirakawa Kohichi Takada Masanori Sato Chisa Fujita Naotaka Hayasaka Takayuki Nobuoka Shintaro Sugita Aki Ishikawa Miyako Mizukami Hiroyuki Ohnuma Kazuyuki Murase Koji Miyanishi Masayoshi Kobune Ichiro Takemasa tadashi hasegawa Akihiro Sakurai Junji Kato Department of Medical Oncology Sapporo Medical University School of MedicineSapporo 060-8556HokkaidoJapan Department of Gastroenterology National Hospital Organization Hokkaido Cancer CenterSapporo 003-0804HokkaidoJapan Department of Surgery Surgical Oncology and ScienceSapporo Medical University School of MedicineSapporo 060-8556HokkaidoJapan Department of Surgical Pathology Sapporo Medical University School of MedicineSapporo 060-8556HokkaidoJapan Department of Medical Genetics Sapporo Medical University School of MedicineSapporo 060-8556HokkaidoJapan Department of Hematology Sapporo Medical University School of MedicineSapporo 060-8556HokkaidoJapan

BACKGROUND Hereditary diffuse gastric cancer(HDGC)is a familial cancer syndrome often associated with germline mutations in the CDH1 ***,the frequency of CDH1 mutations is low in patients with HDGC in East Asian ***,we report three cases of HDGC harboring a missense CDH1 variant,c.1679C>G,from a single Japanese *** SUMMARY A 26-year-old female(Case 1)and a 51-year-old male(father of Case 1),who had a strong family history of gastric cancer,were diagnosed with advanced diffuse gastric *** genetic counselling,a 25-year-old younger brother of Case 1 underwent surveillance esophagogastroduodenoscopy that detected small signet ring cell carcinoma foci as multiple pale lesions in the gastric *** analysis revealed a CDH1 c.1679C>G variant in all three *** It is important for individuals suspected of having HDGC to be actively offered genetics *** report will contribute to an increased awareness of HDGC.

关键词： Hereditary diffuse gastric cancer Signet ring cell carcinoma CDH1 Ecadherin Endoscopic findings Case report

Clinicopathological Analysis of Patients with Nonmuscle-Invasive Bladder Cancer Who Underwent Radical Cystectomy

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Surgical Science 2012年第7期3卷 347-352页

作者： Naotaka Nishiyama Hiroshi Kitamura Masatoshi Mutoh Masahiro Yanase Hiroyuki Iwaki tadashi hasegawa Taiji Tsukamoto Departments of Surgical Pathology Sapporo Medical University School of Medicine Sapporo Japan Departments of Urology Sapporo Medical University School of Medicine Sapporo Japan Divisions of Pathology Sunagawa City Medical Center Sunagawa Japan Divisions of Urology Sunagawa City Medical Center Sunagawa Japan

Objectives: Surgical specimens obtained at the time of the last transurethral resection of bladder tumor (TURBT) for patients with nonmuscle-invasive bladder cancer (NMIBC) who underwent radical cystectomy were retrospectively evaluated in order to investigate the relationship between pathological variation and upstaging of NMIBC. Methods and Materials: Twenty patients (19 men, 1 woman;aged 69.4 ± 12.1 (mean ± SD) years) diagnosed with NMIBC underwent radical cystectomy during follow-up. Results: Five of the 20 patients (25%) had pathological upstaging in the radical cystectomy specimens. There was a statistical association between pathological upstaging and cancer death (p = 0.002). There were three patterns of pathological variation in the upstaged specimens: 1) in patients with BCG-resistant NMIBC, urothelial carcinoma invaded through the lamina propria;2) urothelial carcinoma showed diffuse invasion beyond the deep lamina propria, and the cancer cells had infiltrated as single cells and formed nodules;3) TURBT specimens showed a micropapillary variant. Conclusions: Since these pathological variations correlated with pathological upstaging, they may provide an indication for cystectomy in NMIBC patients.

关键词： Clinicopathological Examination Nonmuscle-Invasive Bladder Cancer Radical Cystectomy Pathological Upstaging

Arsenic pollution of groundwater and its release mechanism in the central part of the Hetao Plain, Inner Mongolia, China

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Acta Geochimica 2006年第S1期 101-102页

作者： Hiroki Hagiwara Kouichi Terasaki Fumio Kanai Takahisa Yoshimura Junji Akai Takeo Ta kano tadashi hasegawa Yoh'ichi Sakai Dept. of Geological Science Niigata University Niigata Japan

Arsenic pollution of groundwater and its release mechanism in the central part of the Hetao Plain, Inner Mongolia, China

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Chinese Journal Of Geochemistry 2006年第B8期25卷 101-102页

作者： Hanjin LUO Hiroki Hagiwara Kouichi Terasaki Fumio Kanai Takahisa Yoshimura Junji Akai Takeo Ta kano tadashi hasegawa Yoh＇ichi Sakai College of Environmental Science and Engineering/South China University of Technology Guangzhou 510640 China Dept. of Geological Science Niigata University Niigata Japan

Systemic hemodynamics in advanced cirrhosis: Concerns during perioperative period of liver transplantation

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World Journal of Hepatology 2016年第25期8卷 1047-1060页

作者： Tomohide Hori Yasuhiro Ogura Yasuharu Onishi Hideya Kamei Nobuhiko Kurata Motoshi Kainuma Hideo Takahashi Shogo Suzuki Takashi Ichikawa Shoko Mizuno tadashi Aoyama Yuki Ishida Takahiro Hirai Tomoko Hayashi Kazuko hasegawa Hiromu Takeichi Atsunobu Ota Yasuhiro Kodera Hiroyuki Sugimoto Taku Iida Shintaro Yagi Kentaro Taniguchi Shinji Uemoto Department of Transplant Surgery Nagoya University Hospital Department of Intensive Care Unit Nagoya University Hospital Second Department of Surgery Nagoya University Hospital Department of Transplant Surgery Kyoto University Hospital First Department of Surgery Mie University Hospital

Advanced liver cirrhosis is usually accompanied by portal hypertension. Long-term portal hypertension results in various vascular alterations. The systemic hemodynamic state in patients with cirrhosis is termed a hyperdynamic state. This peculiar hemodynamic state is characterized by an expanded blood volume, high cardiac output, and low total peripheral resistance. Vascular alterations do not disappear even long after liver transplantation(LT), and recipients with cirrhosis exhibit a persistent systemic hyperdynamic state even after LT. Stability of optimal systemic hemodynamics is indispensable for adequate portal venous flow(PVF) and successful LT, and reliable parameters for optimal systemic hemodynamics and adequate PVF are required. Even a subtle disorder in systemic hemodynamics is precisely indicated by the balance between cardiac output and blood volume. The indocyanine green(ICG) kinetics reflect the patient's functional hepatocytes and effective PVF, and PVF is a major determinant of the ICG elimination constant(kICG) in the well-preserved allograft. The kICG value is useful to set the optimal PVF during living-donor LT and to evaluate adequate PVF after LT. Perioperative management has a large influence on the postoperative course and outcome; therefore, key points and unexpected pitfalls for intensive management are herein summarized. Transplant physicians should fully understand the peculiar systemic hemodynamic behavior in LT recipients with cirrhosis and recognize the critical importance of PVF after LT.

关键词： Liver cirrhosis Portal hypertension Liver transplantation Indocyanine green Hyperdynamic