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Satoru Kobayashi,Hiroyuki Kimura,Isao Kagomiya,Kay Kohn,Toshihiro Osawa,Yukio Noda 한국물리학회 2005 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.46 No.1
A ferroelectric phase transition of RMn2O5 (R = rare earth,Bi,Y) has been systematically reinvestigated by dielectric measurements. In addition to a sharp peak of the dielectric constant along the b axis at the temperature of ferroelectric phase transition, TC1, we observed a small kink at TS slightly below TC1 for R = Er, Y, Tb, Tm. Correspondingly, two-step successive magnetic phase transitions were found for R = Er, Y, Tm in a narrow temperature range of 1 K around TC1 by neutron diraction measurements. The comparison between temperatures of dielectric anomalies and magnetic phase transitions indicates that the paraelectric-ferroelectric phase transition at TC1 is induced by a commensurate magnetic ordering along the c axis in RMn2O5.
Synthesis of Highly Twisted and Fully π-Conjugated Porphyrinic Oligomers
Ito, Satoru,Hiroto, Satoru,Lee, Sangsu,Son, Minjung,Hisaki, Ichiro,Yoshida, Takuya,Kim, Dongho,Kobayashi, Nagao,Shinokubo, Hiroshi American Chemical Society 2015 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY - Vol.137 No.1
<P>Highly twisted π-conjugated molecules have been attractive but challenging targets. We report here an efficient synthesis of highly twisted diporphyrins with 126° and 136° twist angles that involves an oxidative fusion reaction of planar aminoporphyrin precursors at room temperature. Repeated amination–oxidative fusion sequences provide a unidirectionally twisted tetramer. The twisting angle of the tetramer is 298°.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jacsat/2015/jacsat.2015.137.issue-1/ja511905f/production/images/medium/ja-2014-11905f_0006.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ja511905f'>ACS Electronic Supporting Info</A></P>
Ochiai, Satoru,Nomoto, Yoshihito,Yamashita, Yasufumi,Watanabe, Yui,Toyomasu, Yutaka,Kawamura, Tomoko,Takada, Akinori,Ii, Noriko,Kobayashi, Shigeki,Sakuma, Hajime Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.2
Glioblastoma (GBM) is the most common and aggressive type of primary brain neoplasm. The current standard therapy for GBM consists of maximal surgical resection within safe limits, followed by radiation therapy (RT) and chemotherapy with temozolomide. Despite advances in treatment, the prognosis of GBM remains poor. Epileptic seizure is one of the most common symptoms in patients with GBM. Valproic acid (VPA), a histone deacetylase inhibitor, is often used as an anti-epileptic drug in patients with brain neoplasms due to its effectiveness and low toxicity profile. Several in vivo and in vitro studies have indicated that VPA has radiosensitizing effects for gliomas and radioprotective influence on normal brain tissue or hippocampal neurons. The results of several retrospective studies have also indicated potential benefit to improve survival of patients with GBM. Moreover, the promising treatment results of a phase 2 trial of concurrent radiation therapy, temozolomide, and VPA for patients with GBM have been recently reported. The use of VPA in patients with GBM has thus recently receiving more attention. In this article, we review the role of VPA in radiation therapy for GBM, focusing on the clinical evidence.
Yusuke Kobayashi,Kenta Masuda,Akira Hiraswa,Kazuhiro Takehara,Hitoshi Tsuda,Yoh Watanabe,Katsutoshi Oda,Satoru Nagase,Masaki Mandai,Aikou Okamoto,Nobuo Yaegashi,Mikio Mikami,Takayuki Enomoto,Daisuke A 대한부인종양학회 2022 Journal of Gynecologic Oncology Vol.33 No.5
Objective: The practices pertaining to hereditary breast and ovarian cancer (HBOC) in Japan have been rapidly changing owing to the clinical development of poly(ADP-ribose) polymerase inhibitors, the increasing availability of companion diagnostics, and the broadened insurance coverage of HBOC management from April 2020. A questionnaire of gynecologic oncologists was conducted to understand the current status and to promote the widespread standardization of future HBOC management. Methods: A Google Form questionnaire was administered to the members of the Japan Society of Gynecologic Oncology. The survey consisted of 25 questions in 4 categories: respondent demographics, HBOC management experience, insurance coverage of HBOC management, and educational opportunities related to HBOC. Results: A total of 666 valid responses were received. Regarding the prevalence of HBOC practice, the majority of physicians responded in the negative and required human resources, information sharing and educational opportunities, and expanded insurance coverage to adopt and improve HBOC practice. Most physicians were not satisfied with the educational opportunities provided so far, and further expansion was desired. They remarked on the psychological burdens of many HBOC managements. Physicians reported these burdens could be alleviated by securing sufficient time to engage in HBOC management, creating easy-to-understand explanatory material for patients, collaboration with specialists in genetic medicine, and educational opportunities. Conclusion: Gynecologic oncologists in Japan are struggling to deal with psychological burdens in HBOC practice. To promote the clinical practice of HBOC management, there is an urgent need to strengthen human resources and improve educational opportunities, and expand insurance coverage for HBOC management.
Ochiai, Satoru,Nomoto, Yoshihito,Kobayashi, Shigeki,Yamashita, Yasufumi,Watanabe, Yui,Toyomasu, Yutaka,Kawamura, Tomoko,Takada, Akinori,II, Noriko,Sakuma, Hajime Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.4
Prostate cancer is the secondary most frequently diagnosed cancer in the world. Although numerous prospective randomized trial have been conducted to guide the management of patients with localized or locally advanced prostate cancer, few clinical trials targeting node-positive prostate cancer have been reported. Therefore, there are still controversies in the optimal management of node-positive prostate cancer. Recently, efficacy of multimodality treatment, including radiation therapy (RT), for such patients has been reported in several articles. The results indicate potential benefit of RT both in adjuvant therapy after prostatectomy and in definitive therapy for node-positive prostate cancer. The aim in this article was to summarize the current evidence for RT and evaluate the role in multimodality treatment for patients with node-positive prostate cancer.
Japan Society of Gynecologic Oncology 2022 guidelines for uterine cervical neoplasm treatment
Manabu Seino,Satoru Nagase,Hideki Tokunaga,Wataru Yamagami,Yoichi Kobayashi,Tsutomu Tabata,Masanori Kaneuchi 대한부인종양학회 2024 Journal of Gynecologic Oncology Vol.35 No.1
The Japan Society of Gynecologic Oncology (JSGO) Guidelines 2022 for the Treatment ofUterine Cer vical Cancer are revised from the 2017 guideline. This guideline aimed to providestandard care for cer vical cancer, indicate appropriate current treatment methods for cer vicalcancer, minimize variances in treatment methods among institutions, improve diseaseprognosis and treatment safety, reduce the economic and psychosomatic burden of patientsby promoting the performance of appropriate treatment, and enhance mutual understandingbetween patients and healthcare professionals. The guidelines were prepared through theconsensus of the JSGO Guideline Committee, based on a careful review of evidence gatheredthrough the literature searches and the medical health insurance system and actual clinicalpractice situations in Japan. The guidelines comprise seven chapters and 5 algorithms. The main features of the 2022 revision are as follows: 1) added discussed points at the finalconsensus meeting; 2) revised the treatment methods based on the International Federationof Gynecology and Obstetrics 2018 staging system; 3) examined minimally invasive surger ybased on Laparoscopic Approach to Cer vical Cancer trial; 4) added clinical question (CQ)for treatments of rare histological types, gastric type, and small-cell neuroendocrinecarcinoma; 5) added CQ for intensity-modulated radiation therapy; 6) added CQ for cancergenomic profiling test; and 7) added CQ for cancer sur vivorship. Each recommendationis accompanied by a classification of recommendation categories based on the consensusreached by the Guideline Committee members. Here, we present the English version of theJSGO Guidelines 2022 for the Treatment of Uterine Cer vical Cancer.
Manabu Seino,Satoru Nagase,Tsuyoshi Ohta,Wataru Yamagami,Yasuhiko Ebina,Yoichi Kobayashi,Tsutomu Tabata,Masanori Kaneuchi,Takayuki Enomoto,Mikio Mikami 대한부인종양학회 2023 Journal of Gynecologic Oncology Vol.34 No.1
Objective: The aim of this study was to review the clinicopathological characteristics of small cell neuroendocrine cervical cancer (SCNEC) and to identify the optimal treatment. Methods: The Japanese Society of Gynecologic Oncology conducted a retrospective cohort study of SCNECs enrolled in the Gynecological Tumor Registry of the Japan Society of Obstetrics and Gynecology between 2004 and 2015. All cases were modified and unified by International Federation of Gynecology and Obstetrics 2008 (Union for International Cancer Control 7th edition). Results: There were 822 registered patients diagnosed with SCNEC from 2004 to 2015 which comprised 1.1% (822/73,698) of all uterine cervical cancer cases. Rates of lymph-node and distant metastasis were significantly higher in T1b2 (38.9% and 13.7%, respectively) than T1b1 (14.2% and 4.4%, respectively) (p<0.01). In IB2 and T1bN1M0 SCNEC, the 5-year survival rate with surgery followed by chemotherapy was significantly higher than that with surgery followed by radiation therapy/concurrent chemoradiation therapy (p<0.01). Conclusion: SNCEC tumors >4 cm in size had greater rates of lymph-node and distant metastasis when compared with tumors ≤4 cm. Adjuvant chemotherapy, rather than radiotherapy, may improve prognosis after surgery in T1bN1M0 SCNEC.
Nonalcoholic Fatty Liver Disease as a Systemic Disease and the Need for Multidisciplinary Care
Yoneda Masato,Kobayashi Takashi,Iwaki Michihiro,Nogami Asako,Saito Satoru,Nakajima Atsushi 거트앤리버 소화기연관학회협의회 2023 Gut and Liver Vol.17 No.6
Nonalcoholic fatty liver disease (NAFLD) is currently the most common chronic liver disease, and there has been a rapid increase in cases worldwide. NAFLD is rapidly becoming the leading cause of hepatocellular carcinoma and is also associated with an increased risk of cardiovascular disease or exacerbation of other organ diseases, thus posing a significant health problem from both a medical and a socioeconomic perspective. NAFLD is a systemic disease and requires the involvement of numerous medical professionals. Multidisciplinary collaboration, in which different professionals within different specialties come together and work together toward a common goal, supports better patient care by integrating perspectives of multiple experts and facilitating the exchange of opinions. Due to the large number of potential patients, gastroenterologists and hepatologists cannot manage the patients alone, and collaboration between specialists in various fields, including family doctors, dentists, nutritionists, and pharmacists is required for treatment of NAFLD. This review will discuss NAFLD from the perspective of various specialties and introduce multidisciplinary collaboration.
Japan Society of Gynecologic Oncology 2018 guidelines for treatment of uterine body neoplasms
Wataru Yamagami,Mikio Mikami,Satoru Nagase,Tsutomu Tabata,Yoichi Kobayashi,Masanori Kaneuchi,Hiroaki Kobayashi,Hidekazu Yamada,Kiyoshi Hasegawa,Hiroyuki Fujiwara,Hidetaka Katabuchi,Daisuke Aoki 대한부인종양학회 2020 Journal of Gynecologic Oncology Vol.31 No.1
The Fourth Edition of the Guidelines for Treatment of Uterine Body Neoplasm was published in 2018. These guidelines include 9 chapters: 1. Overview of the guidelines, 2. Initial treatment for endometrial cancer, 3. Postoperative adjuvant therapy for endometrial cancer, 4. Post-treatment surveillance for endometrial cancer, 5. Treatment for advanced or recurrent endometrial cancer, 6. Fertility-sparing therapy, 7. Treatment of uterine carcinosarcoma and uterine sarcoma, 8. Treatment of trophoblastic disease, 9. Document collection; and nine algorithms: 1-3. Initial treatment of endometrial cancer, 4. Postoperative adjuvant treatment for endometrial cancer, 5. Treatment of recurrent endometrial cancer, 6. Fertility-sparing therapy, 7. Treatment for uterine carcinosarcoma, 8. Treatment for uterine sarcoma, 9. Treatment for choriocarcinoma. Each chapter includes overviews and clinical questions, and recommendations, objectives, explanation, and references are provided for each clinical question. This revision has no major changes compared to the 3rd edition, but does have some differences: 1) an explanation of the recommendation decision process and conflict of interest considerations have been added in the overview, 2) nurses, pharmacists and patients participated in creation of the guidelines, in addition to physicians, 3) the approach to evidence collection is listed at the end of the guidelines, and 4) for clinical questions that lack evidence or clinical validation, the opinion of the Guidelines Committee is given as a “Recommendations for tomorrow”.
Hirozumi Sano,Ryoji Kobayashi,Satoru Matsushima,Daiki Hori,Masato Yanagi,Daisuke Suzuki,Go Ohba,Hiroshi Yamamoto,Kunihiko Kobayashi 대한소아혈액종양학회 2023 Clinical Pediatric Hematology-Oncology Vol.30 No.1
Nephroblastomatosis (NBM) is a precursor of Wilms tumor. We herein report a case in which Wilms tumor was initially suspected and the affected kidney was removed. The tumor was subsequently diagnosed as intralobar NBM and a favorable outcome was achieved with postoperative chemotherapy. A 2-year-old boy who presented with gross hematuria was found to have an enlarged left kidney with hydronephrosis. Needle biopsy of the left kidney suggested Wilms tumor and left nephrectomy was performed. The tumor was histopathologically diagnosed as intralobar NBM. Although NBM is regarded as a precancerous lesion, a definite treatment plan has not yet been established. In the present case, we used a similar chemotherapy regi-men to that for Wilms tumor. Eight years after the completion of chemotherapy, Wilms tumor has not developed or recurred. Appropriate management plans need to be developed by accumulating similar cases.