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Rie Kondo, Satoshi Watanabe, Satoshi Shoji, Kosuke Ichikawa, Tetsuya Abe, Junko Baba, Junta Tanaka, Hiroki Tsukada, Masaki Terada, Kazuhiro Sato, Yoshie Maruyama, Masato Makino, Akira Hirata, Hiroshi Tanaka, Toshiyuki Koya, Hirohisa Yoshizawa, Toshiaki Kikuchi
OBJECTIVE: Chemotherapy with irinotecan plus cisplatin has shown promise in chemo-naïve small-cell lung cancer (SCLC) patients. However, irinotecan treatment for relapsed or refractory SCLC has not been adequately evaluated. This phase II study evaluated the appropriate treatment schedule of irinotecan as a single agent. This study was designed to determine the antitumor activity, toxicity, and survival in previously treated SCLC patients. METHODS: Previously treated SCLC patients with at least one platinum-based regimen received irinotecan (100 mg/m2) on days 1 and 8, every 3 weeks, until disease progression...
February 14, 2018: Oncology
T Iizuka, D Kikuchi, S Hoteya, M Kaise
Esophageal stricture occurs at a high rate after endoscopic submucosal dissection, especially after entire circumferential dissection, leading to poor quality of life. This retrospective cohort study evaluated the stricture rate in circumferential mucosal defect cases following modified steroid administration. We enrolled 22 consecutive patients who underwent entire circumferential endoscopic submucosal dissection for superficial esophageal cancer between April 2010 and April 2015 at our hospital. Until January 2013, a systemic steroid-prednisolone-was administered at 30 mg/day and tapered over 8 weeks in the original method group (original group)...
February 9, 2018: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
S Honma, K Kouno, S Takasaka, S Mitazaki, S Abe, H Kikuchi, Y Oshima, M Yoshida
Malignant gliomas are highly resistant to chemotherapy and radiation and more effective options for treatment are urgently needed. We reported previously that the aromatic amide brefelamide, which is isolated from methanolic extracts of the cellular slime molds Dictyostelium giganteum and D. brefeldianum, hinders cellular proliferation in a glioma model utilizing 1321N1 human astrocytoma cells. Herein, we examined the mechanisms underlying the inhibition of 1321N1 cell proliferation by brefelamide. Glial cell line-derived neurotrophic factor (GDNF) was found to enhance the rate of proliferation of serum-free cultured 1321N1 cells, but did not affect proliferation in PC12 cells...
January 2, 2018: Die Pharmazie
Rei Suzuki, Hiroyuki Asama, Yuichi Waragai, Tadayuki Takagi, Takuto Hikichi, Mitsuru Sugimoto, Naoki Konno, Ko Watanabe, Jun Nakamura, Hitomi Kikuchi, Yuki Sato, Shigeru Marubashi, Atsushi Masamune, Hiromasa Ohira
We investigated whether serum microRNAs (miRNAs) could be diagnostic or prognostic markers in pancreatic ductal adenocarcinoma (PDAC). We first identified miRNAs showing altered expression in human pancreatic stellate cells (hPSCs) co-cultured with PDAC cells (Panc-1 and BxPC-3) as compared to hPSCs cultured alone. Among the miRNAs with altered expression, let-7d exhibited reduced expression in an in silico analysis of The Cancer Genome Atlas data. Inhibition of let-7d resulted in enhanced expression of fibrosis-related genes...
January 12, 2018: Oncotarget
Daiki Kikuchi, Motonobu Saito, Katsuharu Saito, Yohei Watanabe, Yoshiko Matsumoto, Yasuyuki Kanke, Hisashi Onozawa, Suguru Hayase, Wataru Sakamoto, Teruhide Ishigame, Tomoyuki Momma, Shinji Ohki, Seiichi Takenoshita
Solute carrier (SLC) drug transporters exchange various molecules without energy from adenosine triphosphate hydrolysis, indicating an association with anticancer drug resistance. However, the expression and role of SLC transporters in malignant tumors has not yet been fully elucidated. Therefore, in the current study, the expression of SLC37A family genes was evaluated in patients with colorectal cancer (CRC), and it was revealed that SLC family 37 member 1 (SLC37A1) expression was significantly increased in tumorous tissues compared with that in non-tumorous tissues...
February 2018: Oncology Letters
Tetsuaki Shoji, Hidenori Mizugaki, Yasuyuki Ikezawa, Megumi Furuta, Yuta Takashima, Hajime Kikuchi, Houman Goudarzi, Hajime Asahina, Junko Kikuchi, Eiki Kikuchi, Jun Sakakibara-Konishi, Naofumi Shinagawa, Ichizo Tsujino, Masaharu Nishimura
This report describes the case of a 66-year-old man with non-small cell lung cancer and venous thromboembolism (VTE). Unfractionated heparin (UFH) was initially used to control VTE before chemotherapy. However, switching UFH to warfarin or edoxaban, a novel oral anticoagulant (NOAC), failed. Chemotherapy was then administered to control the tumor which was thought to have been the main cause of VTE, which had been treated by UFH. After tumor shrinkage was achieved by chemotherapy, we were able to successfully switch from UFH to edoxaban...
February 9, 2018: Internal Medicine
Takahiro Nonaka, Noriko Tsurui, Teruhisa Mannen, Yoshimi Kikuchi, Kentaro Shiraki
This paper describes a new pH-responsive peptide tag that adds a protein reversible precipitation and redissolution character. This peptide tag is a part of a cell surface protein B (CspB) derived from Corynebacterium glutamicum. Proinsulin that genetically fused with a peptide of N-terminal 6, 17, 50, or 250 amino acid residues of CspB showed that the reversible precipitation and redissolution depended on the pH. The transition occurred within a physiological and narrow pH range. A CspB50 tag comprising 50 amino acid residues of N-terminal CspB was further evaluated as a representative using other pharmaceutical proteins...
February 9, 2018: Protein Expression and Purification
Elena Pascal, Saransh Singh, Patrick G Callahan, Ben Hourahine, Carol Trager-Cowan, Marc De Graef
Transmission Kikuchi diffraction (TKD) has been gaining momentum as a high resolution alternative to electron back-scattered diffraction (EBSD), adding to the existing electron diffraction modalities in the scanning electron microscope (SEM). The image simulation of any of these measurement techniques requires an energy dependent diffraction model for which, in turn, knowledge of electron energies and diffraction distances distributions is required. We identify the sample-detector geometry and the effect of inelastic events on the diffracting electron beam as the important factors to be considered when predicting these distributions...
February 2, 2018: Ultramicroscopy
Toshimitsu Okamura, Maki Okada, Tatsuya Kikuchi, Hidekatsu Wakizaka, Ming-Rong Zhang
BACKGROUND: Apocynin is a constituent of the medicinal herb Picrorhiza kurroa. It is an inhibitor of nicotinamide adenine dinucleotide phosphate oxidase. This compound shows potential anti-inflammatory and antioxidant effects and has been tested as a neuroprotectant in many animal models of brain disease. In such studies, understanding the brain kinetics of apocynin would be important for interpreting its in vivo efficacy; however, little has been reported on the kinetics of apocynin in the brain...
January 1, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
Hiroko Kashiwagi, Akiko Kikuchi, Mayuko Koyama, Daisuke Saito, Naotsugu Hirabayashi
Background: The Structured Assessment of PROtective Factors for violence risk (SAPROF) was recently developed as a strength-based addition to the risk assessment of future violent behavior. We examined the interrater reliability and predictive accuracy of the SAPROF for violence in forensic mental health inpatient units in Japan. Methods: This retrospective record study provides an initial validation of the SAPROF in a Japanese sample of 95 forensic psychiatric inpatients from a complete 2008-2013 cohort...
2018: Annals of General Psychiatry
Naoki Wada, Roland Kersten, Takahiro Iwai, Shoukou Lee, Fumie Sakurai, Takashi Kikuchi, Daishi Fujita, Makoto Fujita, Jing-Ke Weng
The characterization of complex natural product mixtures to the absolute structural level of their components often requires significant amounts of starting materials, lengthy purification process, followed by arduous structure elucidation efforts. The crystalline sponge (CS) method has demonstrated its utility in absolute structure elucidation of isolated organic compounds at miniscule quantity compared to conventional methodology. Here we develop a new CS-based workflow that greatly expedites in-depth structural analysis of crude natural product extracts...
February 7, 2018: Angewandte Chemie
Shogo Kawaguchi, Tetsuro Yoshimura, Hirotake Sakuraba, Taka Asari, Yohei Sawada, Yasumitsu Araki, Koji Kikuchi, Toyohito Wada, Tomomi Kusumi, Shinsaku Fukuda
We report a case of vimentin-positive early gastric adenocarcinoma arising in a hyperplastic polyp (HP). A 72-year-old Japanese man was admitted for the detailed examination of a gastric polyp. He had a subtotal gastrectomy due to acute abdomen 12 years ago. Upper endoscopy revealed a pedunculated polyp measuring approximately 2 cm on the greater curvature of upper body of the remnant stomach. Magnifying endoscopy revealed that the microsurface pattern was irregular and partially absent accompanied with irregular microvessels at the upper end of the polyp...
February 7, 2018: Clinical Journal of Gastroenterology
Jinsen Tian, Jing Wu, Yu-Lung Chiu
The intensity profiles of backscattered and secondary electrons from a pure Mg sample have shown a variation with sample thickness and acceleration voltage in the range of 5-30 kV, depending on the specimen holder used. The intensities of backscattered electron (BSE) and secondary electron (SE) signals increases with the sample thickness until saturation when using a scanning transmission electron microscopy (STEM) holder with a closed tube below the sample. However the SE signal increases to the maximum and then decreases with the sample thickness when using a transmission Kikuchi diffraction (TKD) holder with no shielding below the sample whereas the BSE signal again increases until saturation...
February 2, 2018: Ultramicroscopy
Osamu Togao, Akio Hiwatashi, Koji Yamashita, Kazufumi Kikuchi, Daichi Momosaka, Koji Yoshimoto, Daisuke Kuga, Masahiro Mizoguchi, Satoshi O Suzuki, Toru Iwaki, Marc Van Cauteren, Koji Iihara, Hiroshi Honda
OBJECTIVE: To evaluate the quantification performance of the perfusion fraction (f) measured with intravoxel incoherent motion (IVIM) MR imaging in a comparison with the histologic vascular density in meningiomas. METHODS: Twenty-nine consecutive patients with meningioma (59.0 ± 16.8 years old, 8 males and 21 females) who underwent a subsequent surgical resection were examined with both IVIM imaging and a histopathologic analysis. IVIM imaging was conducted using a single-shot SE-EPI sequence with 13 b-factors (0, 10, 20, 30, 50, 80, 100, 200, 300, 400, 600, 800, 1000 s mm-2) at 3T...
February 7, 2018: British Journal of Radiology
Saki Tsuchiya, Ken-Ichi Sakai, Keiichi Kawano, Yuta Nakane, Takemitsu Kikuchi, Tomoyuki Akutagawa
2-(1,3-Benzothiazol-2-yl)-4-methoxy-6-(1,4,5-triphenyl-1H-imidazol-2-yl)phenol (BTImP) is an excited-state intramolecular proton transfer (ESIPT) fluorophore, containing an acid-stimuli-responsive intramolecular hydrogen bond (H-bond) that can switch from the central phenolic proton to the imidazole (Im) or the benzothiazole (BT) ring nitrogens. Here, we demonstrate that BTImP shows full-color (red, green, blue, and white) emissions upon the addition of different concentrations of HClO4 or, with time, after the addition of HBF4...
February 7, 2018: Chemistry: a European Journal
Kotaro Sato, Kenya Murakami, Yoshikuni Mimata, Yuki Kikuchi, Ryunosuke Oikawa, Minoru Doita
Superficial ulnar artery (SUA) is defined as arterial variation of an ulnar artery of high origin that lies superficially in the forearm. Because an SUA may be mistaken for a superficial vein, there is a risk of arterial damage. During routine dissection of the cadaver, we incidentally detected a case of unilateral SUA in the left arm. SUA arose from the axillary artery and descended superficial to the axillary artery and median nerve. At the wrist, the SUA crossed over palmaris longus (PL) tendon from the radial side to the ulnar side...
March 2018: Journal of Hand Surgery Asian-Pacific Volume
Jun Kikuchi, Kengo Ito, Yasuhiro Date
A natural ecosystem can be viewed as the interconnections between complex metabolic reactions and environments. Humans, a part of these ecosystems, and their activities strongly affect the environments. To account for human effects within ecosystems, understanding what benefits humans receive by facilitating the maintenance of environmental homeostasis is important. This review describes recent applications of several NMR approaches to the evaluation of environmental homeostasis by metabolic profiling and data science...
February 2018: Progress in Nuclear Magnetic Resonance Spectroscopy
Kazuya Kuwada, Shinji Kuroda, Satoru Kikuchi, Ryuichi Yoshida, Masahiko Nishizaki, Shunsuke Kagawa, Toshiyoshi Fujiwara
BACKGROUND: Sarcopenia is recognized as an important prognostic factor in various types of cancer, including gastric cancer. While long-term survival analyses typically focus on overall and disease-specific survival, death from other causes has received far less attention. METHODS: We reviewed medical records of 491 gastric cancer patients who underwent gastrectomy from January 2005 to March 2014 and whose preoperative computed tomography (CT) images were available for evaluation of sarcopenia...
February 5, 2018: Annals of Surgical Oncology
Gaku Moriyama, Maya Tanigawa, Kosuke Sakai, Yusuke Hirata, Satoshi Kikuchi, Yuriko Saito, Hiroyuki Kyoyama, Kuniko Matsuda, Masahiro Seike, Akihiko Gemma, Kazutsugu Uematsu
It was previously revealed that Wnt signaling is activated in mesothelioma cells. Although epidermal growth factor receptor (EGFR) is expressed in mesothelioma cells, EGFR-tyrosine kinase inhibitors (TKIs) are not effective for mesothelioma treatment. However, in non-small cell lung cancer, the blocking of Wnt signaling has been identified to enhance the anticancer effect of EGFR-TKIs. To confirm the anticancer effect of blocking Wnt signaling in combination with EGFR-TKI treatment in mesothelioma, the present study evaluated the effect of simultaneous suppression of human dishevelled-3 (Dvl-3) expression with Dvl-3 small interfering RNA (siRNA) and of EGFR inhibition with gefitinib on mesothelioma cell viability...
January 2018: Oncology Letters
Akiko Saito-Hakoda, Aki Nishii, Takashi Uchida, Atsuo Kikuchi, Junko Kanno, Ikuma Fujiwara, Shigeo Kure
No abstract text is available yet for this article.
2018: Clinical Pediatric Endocrinology: Case Reports and Clinical Investigations: Official Journal of the Japanese Society for Pediatric Endocrinology
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