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Takei S, Kinoshita H, Kawahara S, Kumihashi M, Jamal M, Yamashita T, Tanaka E, Abe H, Tsutsui K, Kimura S. Kerosene condenses in the trachea following inhalation. Forensic Toxicol 2024:10.1007/s11419-024-00682-4. [PMID: 38436881 DOI: 10.1007/s11419-024-00682-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 01/25/2024] [Indexed: 03/05/2024]
Abstract
PURPOSE We have investigated the absorption dynamics of petroleum fuel components from the analytical results of autopsy samples. METHODS Post-mortem samples of the severely burned case, including femoral blood, intratracheal contents (mucus) and intratracheal gas-phase samples were collected, and analysed by gas chromatography-mass spectrometer with head-space solid-phase microextraction. RESULTS The composition of flammable substances in the tracheal gas phase differed slightly from that in mucus. CONCLUSION High-boiling point components are retained in the trachea, whereas relatively lower-boiling point components are detected predominantly in the tracheal gas phase and blood.
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Affiliation(s)
- Sella Takei
- Department of Forensic Medicine, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Kita, Miki, Kagawa, 761-0793, Japan
| | - Hiroshi Kinoshita
- Department of Forensic Medicine, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Kita, Miki, Kagawa, 761-0793, Japan.
| | - Sachiko Kawahara
- Department of Forensic Medicine, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Kita, Miki, Kagawa, 761-0793, Japan
| | - Mitsuru Kumihashi
- Department of Forensic Medicine, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Kita, Miki, Kagawa, 761-0793, Japan
| | - Mostofa Jamal
- Department of Forensic Medicine, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Kita, Miki, Kagawa, 761-0793, Japan
| | - Tadayoshi Yamashita
- Department of Forensic Medicine, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Kita, Miki, Kagawa, 761-0793, Japan
| | - Etsuko Tanaka
- Department of Forensic Medicine, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Kita, Miki, Kagawa, 761-0793, Japan
| | - Hiroko Abe
- Bio Design Inc., Nishi-Ikebukuro, Toshima, Tokyo, 170-0021, Japan
| | - Kunihiko Tsutsui
- Kagawa Prefectural University of Health Science, 281-1 Hara, Mure, Takamatsu, Kagawa, 761-0123, Japan
| | - Shoji Kimura
- Department of Forensic Medicine, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Kita, Miki, Kagawa, 761-0793, Japan
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Takei S, Kinoshita H, Jamal M, Kumihashi M, Yamashita T, Tanaka E, Kawahara S, Abe H, Tsutsui K, Kimura S. Case report: Fatal poisoning caused by additive effects of two barbiturates. Front Pharmacol 2023; 14:1196565. [PMID: 37292155 PMCID: PMC10244534 DOI: 10.3389/fphar.2023.1196565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 05/09/2023] [Indexed: 06/10/2023] Open
Abstract
A case of fatal poisoning involving multiple psychotropic drugs is presented. Quantitative toxicological analysis showed femoral blood concentrations of pentobarbital, phenobarbital, duloxetine, acetaminophen and tramadol were 10.39, 22.57, 0.22, 0.61 and 0.22 μg/ml, respectively. We concluded that the death was due to the additive effects of two barbiturates. As both pentobarbital and phenobarbital act on gamma-aminobutyric acid (GABA) receptors, central nervous system activity was suppressed, causing respiratory depression. Additive pharmacological effects should be considered in cases of massive ingestion of multiple drugs.
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Affiliation(s)
- Sella Takei
- Departments of Forensic Medicine, Faculty of Medicine, Kagawa University, Takamatsu, Japan
| | - Hiroshi Kinoshita
- Departments of Forensic Medicine, Faculty of Medicine, Kagawa University, Takamatsu, Japan
| | - Mostofa Jamal
- Departments of Forensic Medicine, Faculty of Medicine, Kagawa University, Takamatsu, Japan
| | - Mitsuru Kumihashi
- Departments of Forensic Medicine, Faculty of Medicine, Kagawa University, Takamatsu, Japan
| | - Tadayoshi Yamashita
- Departments of Forensic Medicine, Faculty of Medicine, Kagawa University, Takamatsu, Japan
| | - Etsuko Tanaka
- Departments of Forensic Medicine, Faculty of Medicine, Kagawa University, Takamatsu, Japan
| | - Sachiko Kawahara
- Departments of Forensic Medicine, Faculty of Medicine, Kagawa University, Takamatsu, Japan
| | | | - Kunihiko Tsutsui
- Kagawa Prefectural University of Health Sciences, Takamatsu, Kagawa, Japan
| | - Shoji Kimura
- Departments of Forensic Medicine, Faculty of Medicine, Kagawa University, Takamatsu, Japan
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3
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Tsutsui K, Nemoto M, Kono M, Sato T, Yoshizawa Y, Yumoto Y, Nakagawa R, Iwamoto T, Wada H, Sasaki T. GC-MS analysis of exhaled gas for fine detection of inflammatory diseases. Anal Biochem 2023; 671:115155. [PMID: 37059321 DOI: 10.1016/j.ab.2023.115155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 04/04/2023] [Accepted: 04/12/2023] [Indexed: 04/16/2023]
Abstract
Exhaled gas analysis is a non-invasive test ideal for continuous monitoring of biological metabolic information. We analyzed the exhaled gas of patients with inflammatory diseases for trace gas components that could serve as biomarkers that enable early detection of inflammatory diseases and assessment of treatment efficacy. Furthermore, we examined the clinical potential of this method. We enrolled 34 patients with inflammatory disease and 69 healthy participants. Volatile components from exhaled gas were collected and analyzed by a gas chromatography-mass spectrometry system, and the data were examined for gender, age, inflammatory markers, and changes in markers before and after treatment. The data were tested for statistical significance through discriminant analysis by Volcano plot, Analysis of variance test, principal component analysis, and cluster analysis comparing healthy and patient groups. There were no significant differences in the trace components of exhaled gas by gender or age. However, we found differences in some components of the exhaled gas between healthy and untreated patients. In addition, after treatment, gas patterns including the patient-specific components changed to a state closer to the inflammation-free status. We identified trace components in the exhaled gas of patients with inflammatory diseases and found that some of these regressed after treatment.
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Affiliation(s)
- K Tsutsui
- Department of General Internal Medicine, Katsushika Medical Center, The Jikei University School of Medicine, Japan
| | - M Nemoto
- Department of General Internal Medicine, Katsushika Medical Center, The Jikei University School of Medicine, Japan.
| | - M Kono
- Institute of Clinical Medicine and Research, The Jikei University School of Medicine, Japan; Department of Laboratory Medicine, The Jikei University School of Medicine, Japan
| | - T Sato
- Institute of Clinical Medicine and Research, The Jikei University School of Medicine, Japan; Faculty of Pharmaceutical Sciences, Tokyo University of Science, Japan
| | - Y Yoshizawa
- Institute of Clinical Medicine and Research, The Jikei University School of Medicine, Japan
| | - Y Yumoto
- Institute of Clinical Medicine and Research, The Jikei University School of Medicine, Japan
| | | | - T Iwamoto
- Core Research Facilities for Basic Science, The Jikei University School of Medicine, Japan
| | - H Wada
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Japan
| | - T Sasaki
- Institute of Clinical Medicine and Research, The Jikei University School of Medicine, Japan; Sasaki Institute, Sasaki Foundation, Japan
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4
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Otsuka M, Funakubo F, Suzuki T, Hattori Y, Tsutsui K, Adachi N, Sasaki T. Real-time monitoring of tablet surface temperature during high-speed tableting by infrared thermal imaging. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2021.102736] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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5
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Hirata M, Fujita K, Fujihara S, Mizuo T, Nakabayashi R, Kono T, Namima D, Fujita N, Yamana H, Kamada H, Tani J, Kobara H, Tsutsui K, Matsuda Y, Ono M, Masaki T. Telomerase Reverse Transcriptase Promoter Mutations in Human Hepatobiliary, Pancreatic and Gastrointestinal Cancer Cell Lines. In Vivo 2022; 36:94-102. [PMID: 34972704 DOI: 10.21873/invivo.12680] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 09/27/2021] [Accepted: 10/29/2021] [Indexed: 12/18/2022]
Abstract
BACKGROUND/AIM The promoter region of the telomerase reverse transcriptase (TERT) gene is a regulatory element capable of affecting TERT expression, telomerase activity, and telomerase length. Mutations within the TERT promoter region are the most common mutations in many cancers. In this study, we characterized the TERT promoter mutation status in hepatobiliary, pancreatic, and gastrointestinal cancer cell lines. MATERIALS AND METHODS TERT promoter mutation status was assessed by digital PCR in 12 liver cancer, 5 cholangiocarcinoma (CCA), 12 pancreatic cancer, 17 gastrointestinal cancer, and 3 healthy control cell lines. RESULTS The C228T promoter mutation was detected in 9 liver cancer lines, and the C250T TERT mutation was detected in 1 oesophageal squamous cell carcinoma line. CONCLUSION The C228T promoter mutation is specific to liver cancer cell lines among various gastrointestinal cancer cell lines. These data will contribute to future research on the tumorigenic mechanisms and clinical use of digital PCR to detect mutations.
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Affiliation(s)
- Masahiro Hirata
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Koji Fujita
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Shintaro Fujihara
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Takaaki Mizuo
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Ryota Nakabayashi
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Toshiaki Kono
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Daisuke Namima
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Naoki Fujita
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Hiroki Yamana
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Hideki Kamada
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Joji Tani
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Hideki Kobara
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Kunihiko Tsutsui
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Yoko Matsuda
- Department of Pathology and Host-Defense, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Masafumi Ono
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Tsutomu Masaki
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan;
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Fujita K, Oura K, Tadokoro T, Nakahara M, Tani J, Morishita A, Kobara H, Tsutsui K, Himoto T, Masaki T. Prognosis of probable autoimmune hepatitis patients: a single-center study in Japan. Intern Emerg Med 2021; 16:2155-2162. [PMID: 33783693 DOI: 10.1007/s11739-021-02720-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 03/18/2021] [Indexed: 10/21/2022]
Abstract
Autoimmune hepatitis (AIH) is an idiopathic inflammatory liver disease with genetic susceptibility and unknown environmental triggers. The gold standard for diagnosis, International Autoimmune Hepatitis Group (IAIHG) scoring system, classifies AIH as definite or probable. Conventional research on probable AIH has focused on the Caucasian population and there is little data pertaining to the Asian population. This study aimed to assess and compare the prognosis of Japanese patients with probable and definite AIH. In the current study, patients with probable and definite AIH diagnosed based on IAIHG scores between 1987 and 2018 were enrolled. As a result, 72 patients with definite AIH and 49 patients with probable AIH were evaluated. Univariate analysis revealed age, fibrosis stage 4, and the fibrosis-4 index were prognostic factors for overall survival. Multivariate analysis indicated that age and liver cirrhosis significantly affected the overall survival. When the cut off albumin-bilirubin score was set appropriately, cirrhosis was differentially diagnosed using albumin-bilirubin score with 100% sensitivity and 70.5% specificity. Classification of probable or definite disease did not alter overall survival with statistical significance. In conclusion, our findings suggest that probable AIH should be managed as definite AIH is managed in Japanese population. The albumin-bilirubin score helps identify liver cirrhosis and is a prognostic biomarker for overall survival.
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Affiliation(s)
- Koji Fujita
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki, Kita, Kagawa, 761-0793, Japan.
| | - Kyoko Oura
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki, Kita, Kagawa, 761-0793, Japan
| | - Tomoko Tadokoro
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki, Kita, Kagawa, 761-0793, Japan
| | - Mai Nakahara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki, Kita, Kagawa, 761-0793, Japan
| | - Joji Tani
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki, Kita, Kagawa, 761-0793, Japan
| | - Asahiro Morishita
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki, Kita, Kagawa, 761-0793, Japan
| | - Hideki Kobara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki, Kita, Kagawa, 761-0793, Japan
| | - Kunihiko Tsutsui
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki, Kita, Kagawa, 761-0793, Japan
| | - Takashi Himoto
- Department of Medical Technology, Kagawa Prefectural University of Health Sciences, 281-1 Hara, Mure, Takamatsu, Kagawa, 761-0123, Japan.
| | - Tsutomu Masaki
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki, Kita, Kagawa, 761-0793, Japan
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7
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Yoneyama H, Morishita A, Iwama H, Fujita K, Masaki T, Tani J, Tadokoro T, Nomura T, Sakamoto T, Oura K, Takuma K, Nakahara M, Mimura S, Deguchi A, Oryu M, Tsutsui K, Himoto T, Shimotohno K, Wakita T, Kobara H, Masaki T. Identification of microRNA associated with the elimination of hepatitis C virus genotype 1b by direct-acting antiviral therapies. J Gastroenterol Hepatol 2021; 36:1126-1135. [PMID: 32839985 DOI: 10.1111/jgh.15224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 08/06/2020] [Accepted: 08/12/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND AND AIM Direct-acting antiviral (DAA) therapies have been proven to be highly effective for the eradication of hepatitis C virus (HCV) without resistance-associated substitutions (RASs). However, even in cases with no detected RASs, treatment sometimes fails, suggestive of the existence of some host-related factors involved in HCV eradication by DAAs. To explore such factors, we analyzed the serum microRNAs (miRNAs) of patients who received DAA treatment. METHODS The serum miRNA expression levels of 39 patients with chronic HCV infection without any detectable RASs, who achieved sustained virological response with asunaprevir/daclatasvir or grazoprevir/elbasvir therapy, were investigated cyclopedically, using oligonucleotide microarrays. The effects of specific miRNAs on the replication of HCV were measured in the HCV genomic replicon containing Huh-7 hepatoma cells. RESULTS Along with the disappearance of HCV, the expression quantiles of 16 miRNAs in the asunaprevir/daclatasvir group and 18 miRNAs in the grazoprevir/elbasvir group showed a tendency to increase or decrease. Among these molecules, adjustments for multiple testing yielded a significant differential expression at a false discovery rate of less than 5% for only one molecule, hsa-miR-762. Its expression quantile increased after HCV exclusion in all patients who had achieved sustained virological response. Quantitative polymerase chain reaction analysis validated a significant increase in the serum hsa-miR-762 after disappearance of HCV. On the contrary, hsa-miR-762 was decreased in the relapse and breakthrough of HCV in DAA failures. Transfection of hsa-miR-762 into cultured HCV-infected hepatocytes significantly decreased HCV-RNA replication. CONCLUSION These data suggest that hsa-miR-762 is one of the host factors participating in HCV exclusion by DAA therapy.
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Affiliation(s)
- Hirohito Yoneyama
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa, Japan
| | - Asahiro Morishita
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa, Japan
| | - Hisakazu Iwama
- Life Science Research Center, Kagawa University, Miki, Kagawa, Japan
| | - Koji Fujita
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa, Japan
| | - Takahiro Masaki
- Department of Laboratory Medicine, Jikei University School of Medicine, Tokyo, Japan
| | - Joji Tani
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa, Japan
| | - Tomoko Tadokoro
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa, Japan
| | - Takako Nomura
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa, Japan
| | - Teppei Sakamoto
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa, Japan
| | - Kyoko Oura
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa, Japan
| | - Kei Takuma
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa, Japan
| | - Mai Nakahara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa, Japan
| | - Shima Mimura
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa, Japan
| | - Akihiro Deguchi
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa, Japan
| | - Makoto Oryu
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa, Japan
| | - Kunihiko Tsutsui
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa, Japan
| | - Takashi Himoto
- Department of Medical Technology, Kagawa Prefectural University of Health Sciences, Takamatsu, Kagawa, Japan
| | - Kunitada Shimotohno
- Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, Ichikawa, Chiba, Japan
| | - Takaji Wakita
- Department of Virology II, National Institute of Infectious Diseases, Toyama, Tokyo, Japan
| | - Hideki Kobara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa, Japan
| | - Tsutomu Masaki
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa, Japan
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8
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Manoochehri R, Jafarzadeh Shirazi MR, Akhlaghi A, Tsutsui K, Namavar MR, Zamiri MJ, Rezazadeh FM. The localization and expression of gonadotropin inhibitory hormone in the hypothalamus of turkey hens during the prepubertal, pubertal and postpubertal phases. Domest Anim Endocrinol 2021; 74:106486. [PMID: 32882449 DOI: 10.1016/j.domaniend.2020.106486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 03/27/2020] [Accepted: 04/14/2020] [Indexed: 10/24/2022]
Abstract
Gonadotropin inhibitory hormone (GnIH), initially discovered in birds as a hypothalamic neuropeptide, inhibits the synthesis and release of gonadotropins by affecting GnRH neurons and gonadotropes. Therefore, it may be a key neuropeptide in reproduction in birds. The aim of the present study was to investigate the prepubertal, pubertal, and postpubertal localization of GnIH and changes in hypothalamic GnIH expression in British United Turkey hens. In prepubertal, pubertal, and postpubertal periods, the brains of turkey hens (n = 15) were removed after fixation. Sections (30 μm) were prepared from the entire hypothalamus and stained immunohistochemically against GnIH antibody. Gonadotropin inhibitory hormone-immunoreactive neurons were observed in the paraventricular nucleus. These neurons were significantly more abundant in the prepubertal turkeys than pubertal and postpubertal turkeys (P < 0.05). The results suggested that GnIH neurons have an important role in regulating the pubertal events in British United Turkey hens.
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Affiliation(s)
- R Manoochehri
- Department of Animal Science, College of Agriculture, Shiraz University, Shiraz, Iran
| | | | - A Akhlaghi
- Department of Animal Science, College of Agriculture, Shiraz University, Shiraz, Iran
| | - K Tsutsui
- Laboratory of Integrative Brain Sciences, Department of Biology, Center for Medical Life Science, Waseda University, Tokyo 162-8480, Japan
| | - M R Namavar
- Department of Anatomy, Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran; Department of Anatomy, Histomorphometry and Stereology Research Centre, Shiraz University of Medical Sciences, Shiraz, Iran
| | - M J Zamiri
- Department of Animal Science, College of Agriculture, Shiraz University, Shiraz, Iran
| | - F M Rezazadeh
- Department of Animal Science, College of Agriculture, Shiraz University, Shiraz, Iran
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9
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Namima D, Fujihara S, Iwama H, Fujita K, Matsui T, Nakahara M, Okamura M, Hirata M, Kono T, Fujita N, Yamana H, Kato K, Kamada H, Morishita A, Kobara H, Tsutsui K, Masaki T. The Effect of Gemcitabine on Cell Cycle Arrest and microRNA Signatures in Pancreatic Cancer Cells. In Vivo 2020; 34:3195-3203. [PMID: 33144424 DOI: 10.21873/invivo.12155] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 07/24/2020] [Accepted: 07/27/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND/AIM Gemcitabine, an inhibitor of DNA synthesis, is the gold standard chemotherapeutic agent for pancreatic ductal adenocarcinoma (PDAC). MicroRNAs (miRNAs) play critical roles in cancers, including PDAC. However, less is known about the effect of gemcitabine on PDAC cells and miRNA expression in PDAC. We evaluated the effect of gemcitabine on the cell cycle of PDAC cells in vitro and in vivo and on the miRNA expression profile. MATERIALS AND METHODS Effects of gemcitabine on PK-1 and PK-9 cell growth were evaluated using a cell counting kit-8 assay. Xenografted mouse models were used to assess gemcitabine effects in vivo. RESULTS Gemcitabine inhibited the proliferation and tumour growth of PK-1 cells, and induced S phase cell cycle arrest. Numerous miRNAs were altered upon gemcitabine treatment of PK-1 cells and xenograft models. CONCLUSION Altered miRNAs may serve as potential therapeutic targets for improving the efficacy of gemcitabine in PDAC.
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Affiliation(s)
- Daisuke Namima
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Shintaro Fujihara
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Hisakazu Iwama
- Life Science Research Center, Kagawa University, Kagawa, Japan
| | - Koji Fujita
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Takanori Matsui
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Mai Nakahara
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Megumi Okamura
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Masahiro Hirata
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Toshiaki Kono
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Naoki Fujita
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Hiroki Yamana
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Kiyohito Kato
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Hideki Kamada
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Asahiro Morishita
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Hideki Kobara
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | | | - Tsutomu Masaki
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
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10
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Nomura T, Morishita A, Tani J, Takuma K, Nakahara M, Oura K, Tadokoro T, Kobayashi K, Fujita K, Mimura S, Kobara H, Tsutsui K, Sanomura T, Nishiyama Y, Ibuki E, Haba R, Sakamoto T, Yoneyama H, Himoto T, Masaki T. A case report of granulocyte colony-stimulating factor-producing hepatocellular carcinoma that recurred after long-term complete response. Clin J Gastroenterol 2020; 14:204-211. [PMID: 33068269 DOI: 10.1007/s12328-020-01239-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 09/13/2020] [Indexed: 12/14/2022]
Abstract
The granulocyte colony-stimulating factor (G-CSF) is a glycoprotein that stimulates cell proliferation and differentiation of precursor cells in the bone marrow. Several cases of G-CSF-producing malignant tumors in various organs have been reported, but there are only nine cases of G-CSF-producing hepatocellular carcinoma (HCC) reported in the English literature. G-CSF-producing tumors grow rapidly and have a high probability of distant metastases; thus, they generally have a poor prognosis. Given that the mechanism of the carcinogenesis of G-CSF-producing HCC remains unclear, an efficient treatment strategy also remains to be elucidated. We report herein a case of G-CSF-producing HCC accompanied by leukocytosis and high serum G-CSF concentrations in the disease progression stage after long-term complete response. We also reviewed previous reports to investigate the clinical behaviors of G-CSF-producing HCC, including our case. Clinicians should consider G-CSF-producing HCC in patients with a hepatic mass and drastic leukocytosis, without any evidence of infection and blood disorders. Early diagnosis and prompt therapy, including radical resection, may provide a more favorable prognosis.
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Affiliation(s)
- Takako Nomura
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan.
| | - Asahiro Morishita
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan
| | - Joji Tani
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan
| | - Kei Takuma
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan
| | - Mai Nakahara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan
| | - Kyoko Oura
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan
| | - Tomoko Tadokoro
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan
| | - Kiyoyuki Kobayashi
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan
| | - Koji Fujita
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan
| | - Shima Mimura
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan
| | - Hideki Kobara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan
| | - Kunihiko Tsutsui
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan
| | - Takayuki Sanomura
- Department of Radiology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan
| | - Yoshihiro Nishiyama
- Department of Radiology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan
| | - Emi Ibuki
- Department of Diagnostic Pathology, Kagawa University Hospital, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan
| | - Reiji Haba
- Department of Diagnostic Pathology, Kagawa University Hospital, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan
| | - Teppei Sakamoto
- Department of Internal Medicine, Yashima General Hospital, 2105-17, Yashimanishi-machi, Takamatsu, Kagawa, 761-0113, Japan
| | - Hirohito Yoneyama
- Department of Gastroenterology, Saint Martin's Hospital, Tani-machi, Sakaide, Kagawa, 762-0033, Japan
| | - Takashi Himoto
- Department of Clinical Examination, Faculty of Health Sciences, Kagawa Prefectural University of Health Sciences, 281-1 Hara, Mure-cho, Takamatsu, Kagawa, 761-0123, Japan
| | - Tsutomu Masaki
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan
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11
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Imanishi A, Kawazoe T, Hamada Y, Kumagai T, Tsutsui K, Sakai N, Eto K, Noguchi A, Shimizu T, Takahashi T, Han G, Mishima K, Kanbayashi T, Kondo H. Early detection of Niemann-pick disease type C with cataplexy and orexin levels: continuous observation with and without Miglustat. Orphanet J Rare Dis 2020; 15:269. [PMID: 32993765 PMCID: PMC7523321 DOI: 10.1186/s13023-020-01531-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 09/07/2020] [Indexed: 12/30/2022] Open
Abstract
Study objectives Niemann-Pick type C (NPC) is an autosomal recessive and congenital neurological disorder characterized by the accumulation of cholesterol and glycosphingolipids. Symptoms include hepatosplenomegaly, vertical supranuclear saccadic palsy, ataxia, dystonia, and dementia. Some cases frequently display narcolepsy-like symptoms, including cataplexy which was reported in 26% of all NPC patients and was more often recorded among late-infantile onset (50%) and juvenile onset (38%) patients. In this current study, we examined CSF orexin levels in the 10 patients of NPC with and without cataplexy, which supports previous findings. Methods Ten patients with NPC were included in the study (5 males and 5 females). NPC diagnosis was biochemically confirmed in all 10 patients, from which 8 patients with NPC1 gene were identified. We compared CSF orexin levels among NPC, narcoleptic and idiopathic hypersomnia patients. Results Six NPC patients with cataplexy had low or intermediate orexin levels. In 4 cases without cataplexy, their orexin levels were normal. In 5 cases with Miglustat treatment, their symptoms stabilized or improved. For cases without Miglustat treatment, their conditions worsened generally. The CSF orexin levels of NPC patients were significantly higher than those of patients with narcolepsy-cataplexy and lower than those of patients with idiopathic hypersomnia, which was considered as the control group with normal CSF orexin levels. Discussion Our study indicates that orexin level measurements can be an early alert of potential NPC. Low or intermediate orexin levels could further decrease due to reduction in the neuronal function in the orexin system, accelerating the patients’ NPC pathophysiology. However with Miglustat treatment, the orexin levels stabilized or improved, along with other general symptoms. Although the circuitry is unclear, this supports that orexin system is indeed involved in narcolepsy-cataplexy in NPC patients. Conclusion The NPC patients with cataplexy had low or intermediate orexin levels. In the cases without cataplexy, their orexin levels were normal. Our study suggests that orexin measurements can serve as an early alert for potential NPC; furthermore, they could be a marker of therapy monitoring during a treatment.
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Affiliation(s)
- A Imanishi
- Department of Psychiatry, Akita University Graduate School of Medicine, Akita, Japan
| | - T Kawazoe
- Department of Neurology, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Y Hamada
- Department of Pediatrics, Toyonaka Municipal Hospital, Toyonaka, Japan
| | - T Kumagai
- National Center for Child Health and Development, Tokyo, Japan
| | - K Tsutsui
- Department of Psychiatry, Akita University Graduate School of Medicine, Akita, Japan
| | - N Sakai
- Division of Health Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
| | - K Eto
- Department of Pediatrics, Tokyo Women's Medical University, Tokyo, Japan
| | - A Noguchi
- Department of Pediatrics, Akita University Graduate School of Medicine, Akita, Japan
| | - T Shimizu
- Akita Mental Health and Welfare Center, Akita, Japan
| | - T Takahashi
- Department of Pediatrics, Akita University Graduate School of Medicine, Akita, Japan
| | - G Han
- International Institute for Integrative Sleep Medicine (IIIS), University of Tsukuba, Tsukuba, 305-8575, Japan
| | - K Mishima
- Department of Psychiatry, Akita University Graduate School of Medicine, Akita, Japan.,International Institute for Integrative Sleep Medicine (IIIS), University of Tsukuba, Tsukuba, 305-8575, Japan
| | - T Kanbayashi
- International Institute for Integrative Sleep Medicine (IIIS), University of Tsukuba, Tsukuba, 305-8575, Japan.
| | - H Kondo
- International Institute for Integrative Sleep Medicine (IIIS), University of Tsukuba, Tsukuba, 305-8575, Japan
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12
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Shi T, Fujita K, Gong J, Nakahara M, Iwama H, Liu S, Yoneyama H, Morishita A, Nomura T, Tani J, Takuma K, Tadokoro T, Himoto T, Oura K, Tsutsui K, Kobara H, Masaki T. Aspirin inhibits hepatocellular carcinoma cell proliferation in vitro and in vivo via inducing cell cycle arrest and apoptosis. Oncol Rep 2020; 44:457-468. [PMID: 32627038 PMCID: PMC7336451 DOI: 10.3892/or.2020.7630] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 03/10/2020] [Indexed: 12/24/2022] Open
Abstract
Aspirin, a nonsteroidal anti‑inflammatory drug (NSAID), is known to inhibit cell proliferation in a variety of cancers. However, the underlying mechanism of this inhibition remains unknown. We investigated the effects of aspirin on hepatocellular carcinoma (HCC) cells using in vitro and in vivo models. Six HCC cell lines and a liver cancer cell line including Huh‑7 were used in assays that evaluated cell proliferation, cell cycle, and apoptosis. Flow cytometry, enzyme‑linked immunosorbent assay (ELISA), western blot analysis, and phosphorylated receptor tyrosine kinase array were used to evaluate the effects of aspirin on the cells, and microRNAs (miRNAs) were analyzed by a miRNA array chip. The results were validated in vivo using a nude mouse model of Huh‑7‑xenografted tumors. Our results showed that aspirin exhibited an antiproliferative effect on all cell lines. Moreover, aspirin induced G0/G1 cell cycle arrest and modulated the levels of cell cycle‑related molecules such as cyclin E, cyclin D1, and cyclin‑dependent kinase 2 (Cdk2). In addition, aspirin upregulated the levels of caspase‑cleaved cytokeratin 18, increased the proportion of early apoptotic cells, decreased the levels of clusterin and heat shock protein 70 (HSP 70), upregulated the levels of miRNA‑137 and inhibited epidermal growth factor receptor (EGFR) activation. In addition, we observed that aspirin suppressed cell proliferation partially through the miRNA‑137/EGFR pathway. Our in vivo results showed that aspirin reduced the growth of xenograft tumors in nude mice. In conclusion, aspirin was able to inhibit the growth of HCC cells by cell cycle arrest, apoptosis, and alteration of miRNA levels in in vitro and in vivo models.
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Affiliation(s)
- Tingting Shi
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kida, Kagawa 761‑0793, Japan
| | - Koji Fujita
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kida, Kagawa 761‑0793, Japan
| | - Jian Gong
- Department of Gastroenterology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Mai Nakahara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kida, Kagawa 761‑0793, Japan
| | - Hisakazu Iwama
- Life Science Research Center, Kagawa University, Kida, Kagawa 761‑0793, Japan
| | - Shi Liu
- Department of Gastroenterology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Hirohito Yoneyama
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kida, Kagawa 761‑0793, Japan
| | - Asahiro Morishita
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kida, Kagawa 761‑0793, Japan
| | - Takako Nomura
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kida, Kagawa 761‑0793, Japan
| | - Joji Tani
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kida, Kagawa 761‑0793, Japan
| | - Kei Takuma
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kida, Kagawa 761‑0793, Japan
| | - Tomoko Tadokoro
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kida, Kagawa 761‑0793, Japan
| | - Takashi Himoto
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kida, Kagawa 761‑0793, Japan
| | - Kyoko Oura
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kida, Kagawa 761‑0793, Japan
| | - Kunihiko Tsutsui
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kida, Kagawa 761‑0793, Japan
| | - Hideki Kobara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kida, Kagawa 761‑0793, Japan
| | - Tsutomu Masaki
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kida, Kagawa 761‑0793, Japan
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13
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Imanishi A, Yoshizawa K, Tsutsui K, Omori Y, Ono T, Ito Uemura S, Mishima K, Kondo H, Kanbayashi T. 0757 Increasing Number of Cases Who Had Both Hypersomnolence Disorders and Developmental Disorders With Orexin Measurements. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Recently, attention has been paid to the relationship between developmental disorders such as attention deficit hyperactivity disorder (ADHD) and autism spectrum disorder (ASD), and sleep disorders. We meet many developmental disorder patients who complaint hypersomnolence. Among these patients, cases with coexistence of central hypersomnia and developmental disorders, or developmental disorder alone were increased. Therefore, we first investigated patients with the complaint of hypersomnolence, who were also suspected developmental disorders. Furthermore, we have been measuring CSF orexin in 17 cases suspected of both disorders to investigate orexin levels of these patients.
Methods
86patients who complained of EDS with suspicion of developmental disorders had been examined. In order to diagnose hypersomnolence disorders, PSG and MSLT were performed. Psychological examinations were performed for diagnosing developmental disorders.We have been measuring for CSF orexin in 17 cases suspected both hypersomnolence and developmental disorders. We examined the onset of hypersomnolence and the clinical history of these ADHD or ASD cases for more details.
Results
In 86 examined cases, developmental disorders coexisted in 30 cases. Among 30 cases, ADHD were 18, ASD were 6 and both diagnosed were 6 cases. Among them, 20 cases diagnosed as having coexistence of hypersomnia (8: narcolepsy, 12: IHS) and developmental disorders (ADHD:12, ASD:4, ADHD/ASD:4). In 17 cases with orexin measurements, 10 cases coexisted ADHD and 4 cases coexisted ASD. Two cases diagnosed as both ADHD and ASD. In 10 ADHD cases, 3 cases had low orexin levels, and 7 cases had normal orexin levels. Other 7 ASD cases had normal orexin levels.
Conclusion
ADHD has a higher rate of central hypersomnia (12/18) compared with ASD and the rate of narcolepsy was also high (5/12). While patients in ASD was diagnosed as IHS (3/6), narcolepsy cases were not observed. It became clear that the majority of patients had developmental disorder or had a tendency for developmental disorder before the onset of hypersomnolence.Although it is possible that ADHD/ASD symptoms may be exacerbated by orexin dysfunctions, ADHD/ASD may not newly occur. There were cases with low orexin levels, but it seems that narcolepsy happened to coexist with developmental disorders.
Support
a
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Affiliation(s)
- A Imanishi
- Akita University School of Medicine, Akita, JAPAN
| | - K Yoshizawa
- Akita University School of Medicine, Akita, JAPAN
| | - K Tsutsui
- Akita University School of Medicine, Akita, JAPAN
| | - Y Omori
- Tokyo Metropolitan Geriatric Hospital, Tokyo, JAPAN
| | - T Ono
- Sleep & Circadian Neurobiology Laboratory, Stanford University,, California, CA
| | - S Ito Uemura
- Akita University Graduate School of Health Sciences, Akita, JAPAN
| | - K Mishima
- Akita University School of Medicine, Akita, JAPAN
| | - H Kondo
- International Institute for Integrative Sleep Medicine (IIIS), Tsukuba University,, Tsukuba, JAPAN
| | - T Kanbayashi
- International Institute for Integrative Sleep Medicine (IIIS), Tsukuba University,, Tsukuba, JAPAN
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14
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Fujita N, Fujita K, Iwama H, Kobara H, Fujihara S, Chiyo T, Namima D, Yamana H, Kono T, Takuma K, Hirata M, Kobayashi K, Kato K, Kamada H, Morishita A, Tsutsui K, Himoto T, Okano K, Suzuki Y, Masaki T. Antihypertensive drug telmisartan suppresses the proliferation of gastric cancer cells in vitro and in vivo. Oncol Rep 2020; 44:339-348. [PMID: 32627043 DOI: 10.3892/or.2020.7607] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 04/13/2020] [Indexed: 11/06/2022] Open
Abstract
Gastric cancer is one of the most common malignancies diagnosed worldwide. Telmisartan, an angiotensin receptor blocker (ARB), suppresses the proliferation of cancer cells and the growth of tumors through an unknown mechanism. To identify the mechanism, the present study was designed to evaluate the effects of telmisartan on gastric cancer cell lines and tumors in vitro and in vivo and the associated signaling molecules were identified. It was shown here that telmisartan suppressed the proliferation of the cultured human gastric cancer cell lines MKN74, MKN1 and MKN45 as detected in the CCK‑8 assay. In a mouse xenograft model of gastric cancer, telmisartan suppressed tumor growth by arresting the cell cycle at the G0/G1 phase through inhibition of the expression of cyclin D1, the catalytic subunit of cyclin dependent kinase 4 (CDK4), as well as the phosphorylation of the tumor suppressor retinoblastoma (pRb) protein as detected by western blotting. Notably, telmisartan did not induce apoptosis, as indicated by consistent levels of caspase‑cleaved keratin 18 in MKN74 cells. Furthermore, telmisartan inhibited the phosphorylation of epidermal growth factor receptor (EGFR) and increased the levels of the angiogenesis‑related protein tissue inhibitor of metalloproteinase‑1 (TIMP‑1). Analyses of microarrays revealed that telmisartan altered the expression of miRNAs in MKN74 cells. In conclusion, telmisartan suppressed the proliferation of human gastric cancer cells by inducing cell cycle arrest.
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Affiliation(s)
- Naoki Fujita
- Department of Gastroenterology and Neurology, Kagawa University, Takamatsu, Kagawa 761‑0793, Japan
| | - Koji Fujita
- Department of Gastroenterology and Neurology, Kagawa University, Takamatsu, Kagawa 761‑0793, Japan
| | - Hisakazu Iwama
- Life Science Research Center, Kagawa University, Takamatsu, Kagawa 761‑0793, Japan
| | - Hideki Kobara
- Department of Gastroenterology and Neurology, Kagawa University, Takamatsu, Kagawa 761‑0793, Japan
| | - Shintaro Fujihara
- Department of Gastroenterology and Neurology, Kagawa University, Takamatsu, Kagawa 761‑0793, Japan
| | - Taiga Chiyo
- Department of Gastroenterology and Neurology, Kagawa University, Takamatsu, Kagawa 761‑0793, Japan
| | - Daisuke Namima
- Department of Gastroenterology and Neurology, Kagawa University, Takamatsu, Kagawa 761‑0793, Japan
| | - Hiroki Yamana
- Department of Gastroenterology and Neurology, Kagawa University, Takamatsu, Kagawa 761‑0793, Japan
| | - Toshiaki Kono
- Department of Gastroenterology and Neurology, Kagawa University, Takamatsu, Kagawa 761‑0793, Japan
| | - Kei Takuma
- Department of Gastroenterology and Neurology, Kagawa University, Takamatsu, Kagawa 761‑0793, Japan
| | - Masahiro Hirata
- Department of Gastroenterology and Neurology, Kagawa University, Takamatsu, Kagawa 761‑0793, Japan
| | - Kiyoyuki Kobayashi
- Department of Gastroenterology and Neurology, Kagawa University, Takamatsu, Kagawa 761‑0793, Japan
| | - Kiyohito Kato
- Department of Gastroenterology and Neurology, Kagawa University, Takamatsu, Kagawa 761‑0793, Japan
| | - Hideki Kamada
- Department of Gastroenterology and Neurology, Kagawa University, Takamatsu, Kagawa 761‑0793, Japan
| | - Asahiro Morishita
- Department of Gastroenterology and Neurology, Kagawa University, Takamatsu, Kagawa 761‑0793, Japan
| | - Kunihiko Tsutsui
- Department of Gastroenterology and Neurology, Kagawa University, Takamatsu, Kagawa 761‑0793, Japan
| | - Takashi Himoto
- Department of Gastroenterology and Neurology, Kagawa University, Takamatsu, Kagawa 761‑0793, Japan
| | - Keiichi Okano
- Department of Gastroenterological Surgery, Kagawa University, Takamatsu, Kagawa 761‑0793, Japan
| | - Yasuyuki Suzuki
- Department of Gastroenterological Surgery, Kagawa University, Takamatsu, Kagawa 761‑0793, Japan
| | - Tsutomu Masaki
- Department of Gastroenterology and Neurology, Kagawa University, Takamatsu, Kagawa 761‑0793, Japan
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15
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Kobara H, Nishiyama N, Mori H, Fujihara S, Shi T, Kozuka K, Chiyo T, Kobayashi N, Fujita K, Tani J, Yachida T, Tsutsui K, Okano K, Suzuki Y, Masaki T. Efficacy of crystal violet for identifying the distal end in esophageal submucosal tunnel resection. MINIM INVASIV THER 2020; 30:133-138. [DOI: 10.1080/13645706.2020.1720252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Hideki Kobara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Noriko Nishiyama
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Hirohito Mori
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Shintaro Fujihara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Tingting Shi
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Kazuhiro Kozuka
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Taiga Chiyo
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Nobuya Kobayashi
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Koji Fujita
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Joji Tani
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Tatsuo Yachida
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Kunihiko Tsutsui
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Keiichi Okano
- Department of Gastroenterological Surgery, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Yasuyuki Suzuki
- Department of Gastroenterological Surgery, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Tsutomu Masaki
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
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16
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Fujita K, Nomura T, Morishita A, Oura K, Yoneyama H, Kobara H, Tsutsui K, Himoto T, Masaki T. Albumin-Bilirubin Score Differentiates Liver Fibrosis Stage and Hepatocellular Carcinoma Incidence in Chronic Hepatitis B Virus Infection: A Retrospective Cohort Study. Am J Trop Med Hyg 2020; 101:220-225. [PMID: 31115300 PMCID: PMC6609180 DOI: 10.4269/ajtmh.19-0129] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The albumin-bilirubin (ALBI) score was originally established to stratify prognosis in patients with cirrhosis. The diagnostic accuracy of ALBI score in liver fibrosis staging in patients with chronic hepatitis B remains to be investigated. The present retrospective study, therefore, aimed to evaluate the ability of this score to stage liver fibrosis in these patients. Briefly, consecutive patients with hepatitis B virus (HBV) infection who underwent liver biopsy examinations in Kagawa University Hospital were enrolled. Liver fibrosis stage was assessed using a modified Meta-Analysis of Histological Data in Viral Hepatitis score. Albumin-bilirubin scores were calculated according to the following equation: (log10 total bilirubin [T-Bil] × 0.66) + (albumin [Alb] × -0.085). A total of 91 patients were enrolled in this study. Albumin-bilirubin score was able to differentiate stage 4 from stage 3 fibrosis (P < 0.05). When an ALBI score of -2.190 was adopted as the cutoff value for differentiating stage 4 from stages 1-3, the sensitivity, specificity, and positive likelihood ratio were 85.7%, 74.0%, and 3.300, respectively. Kaplan-Meier analysis showed that baseline ALBI scores < -2.190 correlated with better hepatocellular carcinoma (HCC)-free survival (P < 0.05). In conclusion, ALBI score can be used for liver fibrosis staging in Japanese chronic hepatitis B patients and can help distinguish cirrhotic from non-cirrhotic status. Furthermore, ALBI score was useful as a prognosis biomarker in our patients, with smaller ALBI scores predicting better HCC-free survival. Because calculating ALBI score is easy using serum T-Bil and Alb alone, ALBI score will help clinicians with decision-making in management of HBV-infected patients.
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Affiliation(s)
- Koji Fujita
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Takamatsu, Japan
| | - Takako Nomura
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Takamatsu, Japan
| | - Asahiro Morishita
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Takamatsu, Japan
| | - Kyoko Oura
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Takamatsu, Japan
| | - Hirohito Yoneyama
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Takamatsu, Japan
| | - Hideki Kobara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Takamatsu, Japan
| | - Kunihiko Tsutsui
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Takamatsu, Japan
| | - Takashi Himoto
- Department of Medical Technology, Kagawa Prefectural University of Health Sciences, Takamatsu, Japan
| | - Tsutomu Masaki
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Takamatsu, Japan
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Yamana H, Kato K, Kobara H, Fujihara S, Fujita K, Namima D, Fujita N, Kobayashi K, Kamada H, Morishita A, Tsutsui K, Iwama H, Masaki T. Metformin Inhibits Proliferation and Tumor Growth of QGP-1 Pancreatic Neuroendocrine Tumor Cells by Inducing Cell Cycle Arrest and Apoptosis. Anticancer Res 2020; 40:121-132. [PMID: 31892560 DOI: 10.21873/anticanres.13933] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 11/22/2019] [Accepted: 11/25/2019] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM Pancreatic neuroendocrine tumors (pNETs) are rare pancreatic neoplasms, and therapeutic options for pNETs are limited. Metformin is an anti-hypoglycemic drug that appears to have anticancer effects. However, little is known about the effect of metformin on pNETs. In this study, we investigated the anti-proliferative effect of metformin on a human pNET cell line. MATERIALS AND METHODS The anti-proliferative properties of metformin were evaluated in QGP-1 and NCI-H727 cells using a cell counting kit-8 assay. Xenograft mouse models were used to assess the tumor effect in vivo. RESULTS Metformin inhibited the proliferation and anti-tumor growth of QGP-1 cells, accompanied by their arrest during the cell cycle at the G0/G1 phase. Immunohistochemical analysis of tumor tissues revealed down-regulation of cyclin D1 and proliferating cell nuclear antigen in the metformin-treated group. Additionally, metformin induced apoptosis, and the expression of survivin and claspin were decreased in metformin-treated QGP-1 cells according to the apoptosis array. Furthermore, the angiogenic related protein TIMP-1 was down-regulated, and its miRNA expression was altered by metformin in QGP-1 cells. CONCLUSION Taken together, our study demonstrated the therapeutic potential of metformin and provides molecular mechanistic insights into its anti-tumoral effect on pNETs. This study is the first one describing anti-tumoral effects in pNETs.
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Affiliation(s)
- Hiroki Yamana
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Kiyohito Kato
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Hideki Kobara
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Shintaro Fujihara
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Koji Fujita
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Daisuke Namima
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Naoki Fujita
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Kiyoyuki Kobayashi
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Hideki Kamada
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Asahiro Morishita
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Kunihiko Tsutsui
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
| | - Hisakazu Iwama
- Life Science Research Center, Kagawa University, Kagawa, Japan
| | - Tsutomu Masaki
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa, Japan
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Inokuchi H, Okano K, Kawamura A, Tsutsui K, Ishihara Y, Hiraoka M. Prognostic Value of Neutrophil-to-Lymphocyte Ratio before Cranial Radiotherapy in Non-Small Cell Lung Cancer Patients with Limited Brain Metastases: A Propensity-Score Matched Pair Comparison of Whole-Brain Radiotherapy and Stereotactic Irradiation Alone. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Fujita K, Oura K, Yoneyama H, Shi T, Takuma K, Nakahara M, Tadokoro T, Nomura T, Morishita A, Tsutsui K, Himoto T, Masaki T. Albumin-bilirubin score indicates liver fibrosis staging and prognosis in patients with chronic hepatitis C. Hepatol Res 2019; 49:731-742. [PMID: 30892804 PMCID: PMC6851801 DOI: 10.1111/hepr.13333] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 02/23/2019] [Accepted: 03/10/2019] [Indexed: 12/12/2022]
Abstract
AIM Albumin-bilirubin (ALBI) grade was investigated to predict prognosis of patients with cirrhosis. It was defined using the ALBI score calculated based on serum total bilirubin and albumin, which represent liver function. The diagnostic accuracy for liver fibrosis staging in patients with chronic hepatitis using the ALBI score has not been investigated well. This study aimed to evaluate the diagnostic abilities of the ALBI score for liver fibrosis staging in chronic hepatitis and cirrhosis in Japanese patients with hepatitis C virus (HCV) infection. METHODS Japanese patients with HCV infection who underwent liver biopsy examinations were enrolled in a retrospective study. Fibrosis staging and activity grading were assessed using the modified METAVIR score. The ALBI score was calculated according to the following equation: Log10 total bilirubin (μmol/L) × 0.66 + albumin (g/L) × (-0.085). RESULTS A total of 382 patients were enrolled in this study. The ALBI score differentiated fibrosis stage 4 from 3 and stage 3 from 2 (P < 0.05). When an ALBI score of -2.125 was adopted as a cut-off value, the sensitivity and specificity were 73.2% and 87.1%, respectively, with a positive likelihood ratio of 5.67 to differentiate stage 4 from stages 1-3. Kaplan-Meier analysis showed that smaller ALBI scores at baseline correlated with better hepatocellular carcinoma (HCC)-free and overall survival (P < 0.05). CONCLUSIONS The ALBI score indicates liver fibrosis staging in Japanese patients with HCV infection. Furthermore, smaller ALBI scores predict better HCC-free survival and overall survival. The ALBI score has the potential to expand its application from cirrhosis to chronic hepatitis.
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Affiliation(s)
- Koji Fujita
- Department of Gastroenterology and Neurology, Faculty of MedicineKagawa UniversityMikiJapan
| | - Kyoko Oura
- Department of Gastroenterology and Neurology, Faculty of MedicineKagawa UniversityMikiJapan
| | - Hirohito Yoneyama
- Department of Gastroenterology and Neurology, Faculty of MedicineKagawa UniversityMikiJapan
| | - Tingting Shi
- Department of Gastroenterology and Neurology, Faculty of MedicineKagawa UniversityMikiJapan
| | - Kei Takuma
- Department of Gastroenterology and Neurology, Faculty of MedicineKagawa UniversityMikiJapan
| | - Mai Nakahara
- Department of Gastroenterology and Neurology, Faculty of MedicineKagawa UniversityMikiJapan
| | - Tomoko Tadokoro
- Department of Gastroenterology and Neurology, Faculty of MedicineKagawa UniversityMikiJapan
| | - Takako Nomura
- Department of Gastroenterology and Neurology, Faculty of MedicineKagawa UniversityMikiJapan
| | - Asahiro Morishita
- Department of Gastroenterology and Neurology, Faculty of MedicineKagawa UniversityMikiJapan
| | - Kunihiko Tsutsui
- Department of Gastroenterology and Neurology, Faculty of MedicineKagawa UniversityMikiJapan
| | - Takashi Himoto
- Department of Medical TechnologyKagawa Prefectural University of Health SciencesTakamatsuJapan
| | - Tsutomu Masaki
- Department of Gastroenterology and Neurology, Faculty of MedicineKagawa UniversityMikiJapan
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Inokuchi H, Ishihara Y, Okano K, Kawamura A, Tsutsui K, Hiraoka M. EP-1236 Volumetric assessment of cerebral edema after fractionated SRT for multiple brain metastases. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31656-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Nakamura S, Tsutsui K. Low-frequency rTMS to ventral medial frontal cortex induces depression-like behavioral and physiological state in monkeys. Brain Stimul 2019. [DOI: 10.1016/j.brs.2018.12.696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Imanishi A, Ono T, Omori Y, Sagawa Y, Takahashi Y, Tsutsui K, Watanabe M, Kanbayashi T, Shimizu T. 0626 Increasing Number Of Cases Who Had Both Hypersomnia Disorders And Developmental Disorders, Such As attention deficit hyperactivity disorder (ADHD)And autism spectrum disorder (ASD)In Japan. Sleep 2018. [DOI: 10.1093/sleep/zsy061.625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- A Imanishi
- Akita university school of medicine, Akita, JAPAN
| | - T Ono
- Akita university school of medicine, Akita, JAPAN
| | - Y Omori
- Akita university school of medicine, Akita, JAPAN
| | - Y Sagawa
- Akita university school of medicine, Akita, JAPAN
| | - Y Takahashi
- Akita university school of medicine, Akita, JAPAN
| | - K Tsutsui
- Akita university school of medicine, Akita, JAPAN
| | - M Watanabe
- Akita university school of medicine, Akita, JAPAN
| | - T Kanbayashi
- Akita university school of medicine, Akita, JAPAN
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, JAPAN
| | - T Shimizu
- Akita university school of medicine, Akita, JAPAN
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, JAPAN
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Tanaka N, Takakura A, Miyatake N, Jamal M, Ito A, Kumihashi M, Tsutsui K, Ameno K, Kinoshita H. Comparison of histological findings and the results of energy-dispersive X-ray spectrometry analysis in experimental electrical injury. Leg Med (Tokyo) 2018; 31:20-23. [DOI: 10.1016/j.legalmed.2017.12.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 11/14/2017] [Accepted: 12/04/2017] [Indexed: 11/26/2022]
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Kobara H, Mori H, Nishimoto N, Fujihara S, Nishiyama N, Ayaki M, Yachida T, Matsunaga T, Chiyo T, Kobayashi N, Fujita K, Kato K, Kamada H, Oryu M, Tsutsui K, Iwama H, Haba R, Masaki T. Comparison of submucosal tunneling biopsy versus EUS-guided FNA for gastric subepithelial lesions: a prospective study with crossover design. Endosc Int Open 2017; 5:E695-E705. [PMID: 28782002 PMCID: PMC5542816 DOI: 10.1055/s-0043-112497] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 05/22/2017] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND AND STUDY AIMS Endoscopic ultrasound-guided fine needle aspiration (FNA) for gastrointestinal subepithelial lesions (SELs) has limited diagnostic accuracy due to technical problems and small lesion size. We previously reported a novel submucosal tunneling biopsy (STB) technique for sampling SELs. This study aimed to evaluate the diagnostic ability and safety of STB compared to that of FNA for SELs. PATIENTS AND METHODS The study was a non-randomized, prospective comparative study with crossover design in patients with endoluminal gastric SELs. Forty-three patients, including 29 cases with lesions < 2 cm were enrolled. A crossover design with 2 intervention stages (Group A: FNA followed by STB for 23 SELs, Group B: STB followed by FNA for 20 SELs) was implemented. The primary outcome was the diagnostic yield (DY). Secondary outcomes were technical success rate, procedure time, complication rate, and sample quality. RESULTS The DY of STB was significantly higher than that of FNA (100 % vs. 34.8 %; P < 0.0001) in group A, including 100 % in overall STB. The technical success rate of STB was significantly higher than that of FNA (100 % vs. 56.5 %; P = 0.0006), whereas the median procedure time of STB was significantly longer than that of FNA (37 minutes vs. 18 minutes; P < 0.0001). The median specimen area of STB samples was markedly larger than that of FNA samples (5.54 mm 2 vs. 0.69 mm 2 ; P < 0.001). No complications occurred in either method. CONCLUSIONS STB had significantly superior diagnostic ability and a more adequate sample quality than FNA for endoluminal gastric SELs, indicating the suitability of STB for small SELs. CLINICAL TRIAL REGISTRATION UMIN 000006754.
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Affiliation(s)
- Hideki Kobara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan,Corresponding author Hideki Kobara, MD, PhD Department of Gastroenterology and NeurologyFaculty of MedicineKagawa University1750-1 IkenobeMiki, Kita, Kagawa 761-0793Japan+81-87-891-2158
| | - Hirohito Mori
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Naoki Nishimoto
- Department of Clinical Research Support Center, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Shintaro Fujihara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Noriko Nishiyama
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Maki Ayaki
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Tatsuo Yachida
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Tae Matsunaga
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Taiga Chiyo
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Nobuya Kobayashi
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Koji Fujita
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Kiyohito Kato
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Hideki Kamada
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Makoto Oryu
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Kunihiko Tsutsui
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Hisakazu Iwama
- Life Science Research Center, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Reiji Haba
- Department of Diagnostic Pathology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Tsutomu Masaki
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
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Tobari Y, Kansaku N, Tsutsui K. Noradrenergic modulation of gonadotrophin-inhibitory hormone gene expression in the brain of Japanese quail. J Neuroendocrinol 2017; 29. [PMID: 28683170 DOI: 10.1111/jne.12503] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2016] [Revised: 07/02/2017] [Accepted: 07/03/2017] [Indexed: 02/01/2023]
Abstract
Gonadotrophin-inhibitory hormone (GnIH) is a hypothalamic neuropeptide that inhibits gonadotrophin synthesis and release in birds and mammals. In Japanese quail, GnIH neurones express the noradrenergic receptor and receive noradrenergic innervation. Treatment with noradrenaline (NA) stimulates GnIH release from diencephalic tissue blocks in vitro. However, the effects of NA on hypothalamic GnIH gene expression have not been determined. We investigated noradrenergic regulation of GnIH gene expression in the brain of male quail using the selective noradrenergic neurotoxin N-(2-chloroethyl)-N-ethyl-2-bromobenzylamine hydrochloride (DSP-4). We first showed that DSP-4 reduced the number of noradrenergic (dopamine-β-hydroxylase immunoreactive) cells in the locus coeruleus (LoC) and specifically lowered the NA concentration in the hypothalamus of male quail. Other monoamines, such as dopamine and serotonin, were not affected by drug treatment. DSP-4 did not decrease the numbers of noradrenergic cells of the lateral tegmental cell group, nor the plasma NA concentration. Decreased hypothalamic NA levels after DSP-4 treatment did not change GnIH gene expression in the brains of quail during their interaction with conspecifics. On the other hand, GnIH gene expression increased in the brains of quail socially isolated for 1 hour after DSP-4 treatment. These results suggest that some noradrenergic neurones have inhibitory effects on GnIH gene expression of the hypothalamus in solitary quail.
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Affiliation(s)
- Y Tobari
- Laboratory of Integrative Brain Sciences, Department of Biology, Waseda University, and Center for Medical Life Science of Waseda University, Shinjuku-ku, Tokyo, Japan
- Laboratory of Animal Genetics and Breeding, Department of Animal Science and Biotechnology, School of Veterinary Medicine, Azabu University, Chuo-ku, Sagamihara, Kanagawa, Japan
| | - N Kansaku
- Laboratory of Animal Genetics and Breeding, Department of Animal Science and Biotechnology, School of Veterinary Medicine, Azabu University, Chuo-ku, Sagamihara, Kanagawa, Japan
| | - K Tsutsui
- Laboratory of Integrative Brain Sciences, Department of Biology, Waseda University, and Center for Medical Life Science of Waseda University, Shinjuku-ku, Tokyo, Japan
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Monfredi OJ, Tsutsui K, Sirenko S, Maltseva LA, Byshkov R, Kim MS, Ziman BD, Tarasov K, Wang M, Maltsev AV, Brennan J, Stern MD, Efimov IR, Maltsev VA, Lakatta EG. P1592Pacemaker clocks become uncoupled to cause asystole: heart's endgame. Europace 2017. [DOI: 10.1093/ehjci/eux158.218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Takehana K, Inokuchi H, Tsutsui K, Hiraoka M. Comparison of Radiation Dose of Induction Chemoradiation Therapy Followed by Surgery for Potentially Resectable Stage III Non–Small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.01.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Omori Y, Kanbayashi T, Sagawa Y, Imanishi A, Tsutsui K, Takahashi J, Takeshima M, Takaki M, Nishino S, Shimizu T. 0703 LOW DOSE OF ARIPIPRAZOLE REDUCED NOCTURNAL SLEEP TIME IN THE PATIENTS WITH DELAYED SLEEP PHASE DISORDER AND DEPRESSIVE SYMPTOMS. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Sato S, Kanbayashi T, Imanishi A, Tsutsui K, Shimizu T. 0109 A NONINVASIVE ECG RECORDING IN INTACT MICE DURING SLEEP AND WAKE-SLEEP TRANSITION. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Takahahsi J, Takashi K, Ito Uemura S, Sagawa Y, Tsutsui K, Takahashi Y, Omori Y, Imanishi A, Takeshima M, Satake M, Shimizu T. 0358 RESIDUAL EFFECTS OF ESZOPICLONE AND PLACEBO IN HEALTHY ELDERLY SUBJECTS, A RANDOMIZED DOUBLE BLIND STUDY. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Miyazawa R, Wakabayashi H, Tsutsui K, Iwai H, Kakushima K. Photovoltaic Characteristics of Ultra-Thin Single Crystalline Silicon Solar Cells. Frontiers in Electronics 2017. [DOI: 10.1142/9789813220829_0008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- R. Miyazawa
- Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology 4259 S2-20, Nagatsuta, Midori-ku, Yokohama 226-8502, Japan
| | - H. Wakabayashi
- School of Engineering, Tokyo Institute of Technology 4259 G2-22, Nagatsuta, Midori-ku, Yokohama 226-8502, Japan
| | - K. Tsutsui
- Institute of Innovative Research, Tokyo Institute of Technology 4259 J2-69, Nagatsuta, Midori-ku, Yokohama 226-8502, Japan
| | - H. Iwai
- Institute of Innovative Research, Tokyo Institute of Technology 4259 J2-68, Nagatsuta, Midori-ku, Yokohama 226-8502, Japan
| | - K. Kakushima
- School of Engineering, Tokyo Institute of Technology 4259 S2-20, Nagatsuta, Midori-ku, Yokohama 226-8502, Japan
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Rezazadeh FM, Shirazi MRJ, Zamiri MJ, Salehi MS, Nama-var MR, Akhlaghi A, Tamadon A, Tsutsui K. Seasonal Changes in Hypothalamic Gonadotropin Inhibitory Hormone Expression in the Paraventricular Nucleus of Chukar Partridge (Alectoris chukar). Anim Reprod 2017. [DOI: 10.21451/1984-3143-ar893] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Kinoshita H, Tanaka N, Takakura A, Abe H, Kumihashi M, Shibayama T, Jamal M, Ito A, Tsutsui K, Kimura S, Iwase H, Ameno K. An autopsy case of death by combined use of benzodiazepines and diphenidine. Soud Lek 2017; 62:40-43. [PMID: 29227117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We present an autopsy case involving benzodiazepines and diphenidine. Quantitative toxicological analysis showed concentrations of 7-aminoflunitrazepam (a flunitrazepam metabolite), 7-aminonimetazepam (a nimetazepam metabolite), chlorpheniramine and diphenidine in femoral blood of 0.086 µg/ml, 0.027 µg/ml, 0.066 µg/ml, and 0.073 µg/ml, respectively. Death was attributed to combined toxicity due to the influence of multiple drug interactions.
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Motokawa M, Kaku M, Tohma Y, Kawata T, Fujita T, Kohno S, Tsutsui K, Ohtani J, Tenjo K, Shigekawa M, Kamada H, Tanne K. Effects of Cyclic Tensile Forces on the Expression of Vascular Endothelial Growth Factor (VEGF) and Macrophage-colony-stimulating Factor (M-CSF) in Murine Osteoblastic MC3T3-E1 Cells. J Dent Res 2016; 84:422-7. [PMID: 15840777 DOI: 10.1177/154405910508400505] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
It has been reported that vascular endothelial growth factor (VEGF), expressed by osteoblasts, can induce osteoclast recruitment and thus affects bone remodeling. The purpose of this study was to investigate the effects of cyclic tensile forces on the expression of VEGF and macrophage-colony-stimulating factor (M-CSF) in osteoblastic MC3T3-E1 cells. VEGF and M-CSF gene expression and protein concentration were determined by real-time PCR and enzyme-linked immunoassay. The expression of VEGF and M-CSF mRNA in the experimental group was higher than in the control group. The increase in the concentration of VEGF and M-CSF protein in the experimental group was time-dependent. Moreover, gadolinium (an S-A channel inhibitor), but not nifedipine (L-Type Ca2+ channel blocker), treatment reduced the concentration of VEGF and M-CSF mRNA and protein in the experimental groups. These findings suggest that cyclic tensile forces increase the expression of VEGF and M-CSF in osteoblastic MC3T3-E1 cells via a stretch-activated channel (S-A channel).
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Affiliation(s)
- M Motokawa
- Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan.
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Di Yorio MP, Pérez Sirkin DI, Delgadin TH, Shimizu A, Tsutsui K, Somoza GM, Vissio PG. Gonadotrophin-Inhibitory Hormone in the Cichlid Fish Cichlasoma dimerus: Structure, Brain Distribution and Differential Effects on the Secretion of Gonadotrophins and Growth Hormone. J Neuroendocrinol 2016; 28. [PMID: 26919074 DOI: 10.1111/jne.12377] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 02/10/2016] [Accepted: 02/19/2016] [Indexed: 12/21/2022]
Abstract
The role of gonadotrophin-inhibitory hormone (GnIH) in the inhibition of the reproductive axis has been well-established in birds and mammals. However, its role in other vertebrates, such as the teleost fish, remains controversial. In this context, the present study aimed to evaluate whether GnIH modulates the release of gonadotrophins and growth hormone (GH) in the cichlid fish Cichlasoma dimerus. First, we partially sequenced the precursor polypeptide for GnIH and identified three putative GnIH peptides. Next, we analysed the expression of this precursor polypeptide via a polymerase chain reaction in the reproductive axis of both sexes. We found a high expression of the polypeptide in the hypothalamus and gonads of males. Immunocytochemistry allowed the observation of GnIH-immunoreactive somata in the nucleus posterioris periventricularis and the nucleus olfacto-retinalis, with no differences between the sexes. GnIH-immunoreactive fibres were present in all brain regions, with a high density in the nucleus lateralis tuberis and at both sides of the third ventricle. Finally, we performed in vitro studies on intact pituitary cultures to evaluate the effect of two doses (10(-6) m and 10(-8) m) of synthetic C. dimerus (cd-) LPQRFa-1 and LPQRFa-2 on the release of gonadotrophins and GH. We observed that cd-LPQRFa-1 decreased β-luteinising hormone (LH) and β-follicle-stimulating hormone (FSH) and also increased GH release to the culture medium. The release of β-FSH was increased only when it was stimulated with the higher cd-LPQRFa-2 dose. The results of the present study indicate that cd-LPQRFa-1, the cichlid fish GnIH, inhibits β-LH and β-FSH release and stimulates GH release in intact pituitary cultures of C. dimerus. The results also show that cd-LPQRF-2 could act as an β-FSH-releasing factor in this fish species.
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Affiliation(s)
- M P Di Yorio
- Laboratorio de Neuroendocrinología del Crecimiento y la Reproducción, DBBE, FCEN-UBA/IBBEA-CONICET-UBA, Ciudad Universitaria, (C1428EHA), Buenos Aires, Argentina
| | - D I Pérez Sirkin
- Laboratorio de Neuroendocrinología del Crecimiento y la Reproducción, DBBE, FCEN-UBA/IBBEA-CONICET-UBA, Ciudad Universitaria, (C1428EHA), Buenos Aires, Argentina
| | - T H Delgadin
- Laboratorio de Neuroendocrinología del Crecimiento y la Reproducción, DBBE, FCEN-UBA/IBBEA-CONICET-UBA, Ciudad Universitaria, (C1428EHA), Buenos Aires, Argentina
| | - A Shimizu
- National Research Institute of Fisheries Science, Fisheries Research Agency, Yokohama, Kanagawa, Japan
| | - K Tsutsui
- Department of Biology and Center for Medical Life Science, Waseda University, Tokyo, Japan
| | - G M Somoza
- Instituto de Investigaciones Biotecnológicas-Instituto Tecnológico de Chascomús (IIB-INTECH), CONICET-UNSAM, Chascomús, Buenos Aires, Argentina
| | - P G Vissio
- Laboratorio de Neuroendocrinología del Crecimiento y la Reproducción, DBBE, FCEN-UBA/IBBEA-CONICET-UBA, Ciudad Universitaria, (C1428EHA), Buenos Aires, Argentina
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Wingfield JC, Perfito N, Calisi R, Bentley G, Ubuka T, Mukai M, O'Brien S, Tsutsui K. Putting the brakes on reproduction: Implications for conservation, global climate change and biomedicine. Gen Comp Endocrinol 2016; 227:16-26. [PMID: 26474923 DOI: 10.1016/j.ygcen.2015.10.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 10/08/2015] [Indexed: 02/07/2023]
Abstract
Seasonal breeding is widespread in vertebrates and involves sequential development of the gonads, onset of breeding activities (e.g. cycling in females) and then termination resulting in regression of the reproductive system. Whereas males generally show complete spermatogenesis prior to and after onset of breeding, females of many vertebrate species show only partial ovarian development and may delay onset of cycling (e.g. estrous), yolk deposition or germinal vesicle breakdown until conditions conducive for ovulation and onset of breeding are favorable. Regulation of this "brake" on the onset of breeding remains relatively unknown, but could have profound implications for conservation efforts and for "mismatches" of breeding in relation to global climate change. Using avian models it is proposed that a brain peptide, gonadotropin-inhibitory hormone (GnIH), may be the brake to prevent onset of breeding in females. Evidence to date suggests that although GnIH may be involved in the regulation of gonadal development and regression, it plays more regulatory roles in the process of final ovarian development leading to ovulation, transitions from sexual to parental behavior and suppression of reproductive function by environmental stress. Accumulating experimental evidence strongly suggests that GnIH inhibits actions of gonadotropin-releasing hormones on behavior (central effects), gonadotropin secretion (central and hypophysiotropic effects), and has direct actions in the gonad to inhibit steroidogenesis. Thus, actual onset of breeding activities leading to ovulation may involve environmental cues releasing an inhibition (brake) on the hypothalamo-pituitary-gonad axis.
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Affiliation(s)
- John C Wingfield
- Department of Neurobiology, Physiology and Behavior, University of California, One Shields Avenue, Davis, CA 95616, USA.
| | - Nicole Perfito
- Department of Integrative Biology, University of California, Berkeley, CA 94720, USA
| | - Rebecca Calisi
- Department of Biology, Barnard College, Columbia University, New York, NY 10027, USA
| | - George Bentley
- Department of Integrative Biology, University of California, Berkeley, CA 94720, USA
| | - T Ubuka
- Department of Biology, Waseda University, Shinjuku-ku, Tokyo 162-8480, Japan
| | - M Mukai
- Department of Food Science, College of Agriculture and Life Sciences, Cornell University, Ithaca, NY 14853, USA
| | - Sara O'Brien
- Department of Biology, Radford University, Radford, VA 24142, USA
| | - K Tsutsui
- Department of Biology, Waseda University, Shinjuku-ku, Tokyo 162-8480, Japan
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Kobara H, Mori H, Fujihara S, Nishiyama N, Tani J, Morishita A, Oryu M, Tsutsui K, Masaki T. Endoscopically visualized features of gastric submucosal tumors on submucosal endoscopy. Endoscopy 2015; 46 Suppl 1 UCTN:E660-1. [PMID: 25526413 DOI: 10.1055/s-0034-1390840] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- Hideki Kobara
- Department of Gastroenterology and Neurology, Kagawa Medical University School of Medicine, Kagawa, Japan
| | - Hirohito Mori
- Department of Gastroenterology and Neurology, Kagawa Medical University School of Medicine, Kagawa, Japan
| | - Shintaro Fujihara
- Department of Gastroenterology and Neurology, Kagawa Medical University School of Medicine, Kagawa, Japan
| | - Noriko Nishiyama
- Department of Gastroenterology and Neurology, Kagawa Medical University School of Medicine, Kagawa, Japan
| | - Johji Tani
- Department of Gastroenterology and Neurology, Kagawa Medical University School of Medicine, Kagawa, Japan
| | - Asahiro Morishita
- Department of Gastroenterology and Neurology, Kagawa Medical University School of Medicine, Kagawa, Japan
| | - Makoto Oryu
- Department of Gastroenterology and Neurology, Kagawa Medical University School of Medicine, Kagawa, Japan
| | - Kunihiko Tsutsui
- Department of Gastroenterology and Neurology, Kagawa Medical University School of Medicine, Kagawa, Japan
| | - Tsutomu Masaki
- Department of Gastroenterology and Neurology, Kagawa Medical University School of Medicine, Kagawa, Japan
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Osugi T, Ubuka T, Tsutsui K. An evolutionary scenario for gonadotrophin-inhibitory hormone in chordates. J Neuroendocrinol 2015; 27:556-66. [PMID: 25494813 DOI: 10.1111/jne.12246] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 12/03/2014] [Accepted: 12/08/2014] [Indexed: 12/12/2022]
Abstract
In 2000, we discovered a novel hypothalamic neuropeptide that actively inhibits gonadotrophin release in quail and termed it gonadotrophin-inhibitory hormone (GnIH). GnIH peptides have subsequently been identified in most representative species of gnathostomes. They all share a C-terminal LPXRFamide (X = L or Q) motif. GnIH can inhibit gonadotrophin synthesis and release by decreasing the activity of GnRH neuroes, as well as by directly inhibiting pituitary gonadotrophin secretion in birds and mammals. To investigate the evolutionary origin of GnIH and its ancestral function, we identified a GnIH precursor gene encoding GnIHs from the brain of sea lamprey, the most ancient lineage of vertebrates. Lamprey GnIHs possess a C-terminal PQRFamide motif. In vivo administration of one of lamprey GnIHs stimulated the expression of lamprey GnRH in the hypothalamus and gonadotophin β mRNA in the pituitary. Thus, GnIH may have emerged in agnathans as a stimulatory neuropeptide that subsequently diverged to an inhibitory neuropeptide during the course of evolution from basal vertebrates to later-evolved vertebrates, such as birds and mammals. From a structural point of view, pain modulatory neuropeptides, such as neuropeptide FF (NPFF) and neuropeptide AF, share a C-terminal PQRFamide motif. Because agnathans possess both GnIH and NPFF genes, the origin of GnIH and NPFF genes may date back before the emergence of agnathans. More recently, we identified a novel gene encoding RFamide peptides in the amphioxus. Molecular phylogenetic analysis and synteny analysis indicated that this gene is closely related to the genes of GnIH and NPFF of vertebrates. The results suggest that the identified protochordate gene is similar to the common ancestor of GnIH and NPFF genes, indicating that the origin of GnIH and NPFF may date back to the time of the emergence of early chordates. The GnIH and NPFF genes may have diverged by whole-genome duplication during the course of vertebrate evolution.
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Affiliation(s)
- T Osugi
- Department of Biology and Center for Medical Life Science, Waseda University, Shinjuku, Tokyo, Japan
| | - T Ubuka
- Department of Biology and Center for Medical Life Science, Waseda University, Shinjuku, Tokyo, Japan
| | - K Tsutsui
- Department of Biology and Center for Medical Life Science, Waseda University, Shinjuku, Tokyo, Japan
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Kinoshita H, Tanaka N, Jamal M, Takakura A, Kumihashi M, Tobiume T, Tsutsui K, Ameno K. A color test for the convenient identification of an ingested surface activating agent. Soud Lek 2015; 60:40-42. [PMID: 26419519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Color tests are easy, simple and inexpensive methods for the qualitative identification of chemicals. A color test was applied to the stomach contents of a forensic autopsy case. The result of the test, using bromophenol blue reagent, indicated the ingestion of a commercial cleaning product containing a cationic surface activating agent. Our findings suggest that forensic investigators should consider the additives used in commercial chemical products, such as surface activating agents, when determining the cause of death.
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Kobara H, Mori H, Rafiq K, Fujihara S, Nishiyama N, Chiyo T, Matsunaga T, Ayaki M, Yachida T, Kato K, Kamada H, Fujita K, Morishita A, Oryu M, Tsutsui K, Iwama H, Kushida Y, Haba R, Masaki T. Analysis of the amount of tissue sample necessary for mitotic count and Ki-67 index in gastrointestinal stromal tumor sampling. Oncol Rep 2014; 33:215-22. [PMID: 25405369 DOI: 10.3892/or.2014.3608] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Accepted: 11/03/2014] [Indexed: 12/31/2022] Open
Abstract
There are no established opinions concerning whether the amount of tissue affects the accuracy of histological analyses in gastrointestinal stromal tumors (GISTs). The aim of the present study was to investigate the appropriate amount of tissue sample needed for mitotic count based on the risk classification of GISTs and the Ki-67 index using the following three methods: endoscopic ultrasound-guided fine-needle aspiration (FNA), a novel sampling method called tunneling bloc biopsy (TBB), and biopsy forceps followed by TBB (Bf). Forty-three samples (12 FNA, 17 TBB and 14 Bf) diagnosed as GISTs by immunohistological analysis were utilized. The major and minor axes and overlay area of one piece of specimen (OPS) from the three sampling methods were measured using digital imaging software and were analyzed comparatively regarding the acquisition of histological data. The mean major and minor axes (mm) and overlay areas (mm2) were in the order of TBB > Bf > FNA. The evaluable rates by mitotic count and Ki-67 were, respectively, 75% (9/12) and 83.3% (10/12) for FNA samples, 100% (17/17) and 100% (17/17) for TBB samples, and 100% (14/14) and 100% (14/14) for Bf samples (P>0.05). Three FNA samples were judged unevaluable due to too small specimens in overall diagnosis including mitotic count and Ki-67, calculating the cut-off value for the overlay area of OPS as 0.17 mm2. Comparing the concordance rates between the pre- and post-operative samples, TBB samples was significantly better than FNA (P<0.05). Conclusively, while the amounts of tissues obtained by TBB and Bf are unnecessary for the histological assessment of mitotic count and Ki-67 index, developments of the FNA method are needed to minimize sample error. Considering the technical aspects, as well as the size of the specimens, could help to guide therapeutic planning and improve diagnostic yield for GI subepithelial tumors.
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Affiliation(s)
- Hideki Kobara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kita, Kagawa 761-0793, Japan
| | - Hirohito Mori
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kita, Kagawa 761-0793, Japan
| | - Kazi Rafiq
- Department of Pharmacology, Faculty of Medicine, Kagawa University, Miki, Kita, Kagawa 761-0793, Japan
| | - Shintaro Fujihara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kita, Kagawa 761-0793, Japan
| | - Noriko Nishiyama
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kita, Kagawa 761-0793, Japan
| | - Taiga Chiyo
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kita, Kagawa 761-0793, Japan
| | - Tae Matsunaga
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kita, Kagawa 761-0793, Japan
| | - Maki Ayaki
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kita, Kagawa 761-0793, Japan
| | - Tatsuo Yachida
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kita, Kagawa 761-0793, Japan
| | - Kiyohito Kato
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kita, Kagawa 761-0793, Japan
| | - Hideki Kamada
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kita, Kagawa 761-0793, Japan
| | - Koji Fujita
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kita, Kagawa 761-0793, Japan
| | - Asahiro Morishita
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kita, Kagawa 761-0793, Japan
| | - Makoto Oryu
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kita, Kagawa 761-0793, Japan
| | - Kunihiko Tsutsui
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kita, Kagawa 761-0793, Japan
| | - Hisakazu Iwama
- Life Science Research Center, Faculty of Medicine, Kagawa University, Miki, Kita, Kagawa 761-0793, Japan
| | - Yoshio Kushida
- Department of Diagnostic Pathology, Faculty of Medicine, Kagawa University, Miki, Kita, Kagawa 761-0793, Japan
| | - Reiji Haba
- Department of Diagnostic Pathology, Faculty of Medicine, Kagawa University, Miki, Kita, Kagawa 761-0793, Japan
| | - Tsutomu Masaki
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kita, Kagawa 761-0793, Japan
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Kobara H, Mori H, Rafiq K, Matsunaga T, Fujihara S, Nishiyama N, Ayaki M, Yachida T, Tani J, Miyoshi H, Kato K, Kamada H, Yoneyama H, Morishita A, Tsutsui K, Iwama H, Haba R, Masaki T. Evaluation of gastric submucosal tumors using endoscopically visualized features with submucosal endoscopy. Oncol Lett 2014; 8:161-168. [PMID: 24959238 PMCID: PMC4063622 DOI: 10.3892/ol.2014.2126] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Accepted: 04/10/2014] [Indexed: 12/13/2022] Open
Abstract
Although the macroscopic characteristics of submucosal tumors (SMTs), such as gastrointestinal stromal tumors (GISTs), have been characterized, the assessment of SMTs by their endoscopically visualized features (EVF; which are observed by endoscopic imaging under direct view) remains unevaluated. The aim of the present study was to investigate the potential of endoscopic diagnostics for SMTs using EVF. The EVF of 26 gastric SMT cases, in which the final pathological diagnosis was obtained by core biopsy using the submucosal endoscopy with mucosal flap method, were retrospectively reviewed. Each type of SMT was classified according to the following five EVF: Color, clarity, shape, tumor coating and solidity. Additionally, the EVF of 13 low-risk GISTs and 13 benign submucosal tumors (BSTs) were comparatively evaluated for the five abovementioned EVF. Similar trends were identified between the low-risk GISTs, granular cell tumors and the schwannoma with regard to EVF. However, while these tumors exhibited cloudy EVF, the leiomyomas tended to exhibit clear EVF. Among SMTs of the heterotopic pancreas type, the EVF demonstrated particularly small nodules of the pancreatic tissue itself. Although the sample size included in the present study is small, a classification system for gastric SMTs was proposed according to the EVF. When compared with the BST group, the GIST group demonstrated a significantly higher frequency of tumors that exhibited a combination of three EVF (white, cloudy and rigid) that are consistent with all gastric GISTs (P<0.05). Gastric SMTs may be classified based on the EVF, which indicates that the EVF possess potential diagnostic value for the differentiation of GISTs from BSTs.
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Affiliation(s)
- Hideki Kobara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
| | - Hirohito Mori
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
| | - Kazi Rafiq
- Department of Pharmacology, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
| | - Tae Matsunaga
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
| | - Shintaro Fujihara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
| | - Noriko Nishiyama
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
| | - Maki Ayaki
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
| | - Tatsuo Yachida
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
| | - Johji Tani
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
| | - Hisaaki Miyoshi
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
| | - Kiyohito Kato
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
| | - Hideki Kamada
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
| | - Hirohito Yoneyama
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
| | - Asahiro Morishita
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
| | - Kunihiko Tsutsui
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
| | - Hisakazu Iwama
- Life Science Research Center, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
| | - Reiji Haba
- Department of Diagnostic Pathology, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
| | - Tsutomu Masaki
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
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Jafarzadeh Shirazi MR, Zamiri MJ, Salehi MS, Moradi S, Tamadon A, Namavar MR, Akhlaghi A, Tsutsui K, Caraty A. Differential expression of RFamide-related peptide, a mammalian gonadotrophin-inhibitory hormone orthologue, and kisspeptin in the hypothalamus of Abadeh ecotype does during breeding and anoestrous seasons. J Neuroendocrinol 2014; 26:186-94. [PMID: 24528197 DOI: 10.1111/jne.12137] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 02/07/2014] [Accepted: 02/10/2014] [Indexed: 12/19/2022]
Abstract
Gonadotrophin-inhibitory hormone (GnIH) is a novel hypothalamic neuropeptide that was discovered in birds as an inhibitory factor for gonadotrophin release. RFamide-related peptide (RFRP) is a mammalian GnIH orthologue that inhibits gonadotrophin synthesis and release in mammals through actions on gonadotrophin-releasing hormone (GnRH) neurones and gonadotrophs, mediated via the GnIH receptor (GnIH-R), GPR147. On the other hand, hypothalamic kisspeptin provokes the release of GnRH from the hypothalamus. The present study aimed to compare the expression of RFRP in the dorsomedial hypothalamus and paraventricular nucleus (DMH/PVN) and that of kisspeptin in the arcuate nucleus (ARC) of the female goat hypothalamus during anoestrous and breeding seasons. Mature female Abadeh does were used during anoestrus, as well as the follicular and luteal phases of the cycle. The number of RFRP-immunoreactive (-IR) neurones in the follicular phase was lower than in the luteal and anoestrous stages. Irrespective of the ovarian stage, the number of RFRP-IR neurones in the rostral and middle regions of the DMH/PVN was higher than in the caudal region. By contrast, the number of kisspeptin-IR neurones in the follicular stage was greater than in the luteal stage and during the anoestrous stage. Irrespective of the stage of the ovarian cycle, the number of kisspeptin-IR neurones in the caudal region of the ARC was greater than in the middle and rostral regions. In conclusion, RFRP-IR cells were more abundant in the rostral region of the DMH/PVN nuclei of the hypothalamus, with a greater number being found during the luteal and anoestrous stages compared to the follicular stage. On the other hand, kisspeptin-IR neurones were more abundant in the caudal part of the ARC, with a greater number recorded in the follicular stage compared to the luteal and anoestrous stages.
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Kinoshita H, Tanaka N, Jamal M, Kumihashi M, Tsutsui K, Ameno K. Xylene; a useful marker for agricultural products ingestion. Soud Lek 2013; 58:59-60. [PMID: 24289525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Here we report about a case of malathion (an organophosphate insecticide) ingestion. Headspace analysis of stomach content provided useful information for screening of toxic chemicals. We should pay attention to solvents used in commercial industrial products.
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Kobara H, Mori H, Rafiq K, Fujihara S, Nishiyama N, Ayaki M, Yachida T, Tani J, Miyoshi H, Kamada H, Morishita A, Oryu M, Tsutsui K, Haba R, Masaki T. Indications of endoscopic submucosal dissection for symptomatic benign gastrointestinal subepithelial or carcinoid tumors originating in the submucosa. Mol Clin Oncol 2013; 1:1002-1008. [PMID: 24649284 DOI: 10.3892/mco.2013.177] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Accepted: 08/19/2013] [Indexed: 02/06/2023] Open
Abstract
Endoscopic submucosal dissection (ESD) for upper gastrointestinal (GI) subepithelial tumors (SETs) originating in the muscularis propria (MP) layer is associated with numerous issues regarding secure closure and measures against accidental perforation. However, symptomatic benign GI SETs or carcinoid tumors originating in the submucosa (SM) may be safely resected en-bloc using ESD. In this study, the feasibility and safety of ESD as a novel method for endoscopic resection for such GI SETs revealed on endoscopic ultrasonography (EUS) was investigated. A total of 12 consecutive cases of patients with symptomatic benign SETs (n=3; 1 esophageal hemangioma and 2 gastric lipomas) or small carcinoid tumors (n=9; <10 mm, with an extremely low risk of metastasis) originating in the SM as determined on EUS, between March, 2009 and April, 2013, were retrospectively reviewed. The lesions were resected by ESD after confirming that the tumors originated from the SM. The complication rate following en-bloc resection was also determined. En-bloc resection was achieved in all 12 cases, the mean procedure time was 45 min (range, 20-120 min) and no complications occurred intra- or postoperatively. There was no tumor recurrence or disease-related mortality reported during the follow-up period (median follow-up time, 13.4 months). Histopathological curative resection was achieved with ESD without complications in all 9 cases with carcinoid tumors. Therefore, if EUS reveals a SET originating in the SM without infiltration of the MP and resection is indicated due to the presence of abdominal symptoms, ESD may be a feasible option for diagnostic treatment with minimal invasiveness. However, larger-scale prospective studies are required to establish the feasibility and safety of this procedure.
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Affiliation(s)
- Hideki Kobara
- Departments of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 7610793, Japan
| | - Hirohito Mori
- Departments of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 7610793, Japan
| | - Kazi Rafiq
- Pharmacology, Faculty of Medicine, Kagawa University, Miki, Kagawa 7610793, Japan
| | - Shintarou Fujihara
- Departments of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 7610793, Japan
| | - Noriko Nishiyama
- Departments of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 7610793, Japan
| | - Maki Ayaki
- Departments of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 7610793, Japan
| | - Tatsuo Yachida
- Departments of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 7610793, Japan
| | - Johji Tani
- Departments of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 7610793, Japan
| | - Hisaaki Miyoshi
- Departments of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 7610793, Japan
| | - Hideki Kamada
- Departments of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 7610793, Japan
| | - Asahiro Morishita
- Departments of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 7610793, Japan
| | - Makoto Oryu
- Departments of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 7610793, Japan
| | - Kunihiko Tsutsui
- Departments of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 7610793, Japan
| | - Reiji Haba
- Diagnostic Pathology, Faculty of Medicine, Kagawa University, Miki, Kagawa 7610793, Japan
| | - Tsutomu Masaki
- Departments of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa 7610793, Japan
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Kobara H, Mori H, Fujihara S, Nishiyama N, Tsutsui K, Masaki T. Gastric heterotopic pancreas can be identified by endoscopic direct imaging with submucosal endoscopy. J Gastrointestin Liver Dis 2013; 22:345-348. [PMID: 24078995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Heterotopic pancreas (HP) is pancreatic tissue found outside the usual anatomical location of the pancreas, typically in the upper gastrointestinal tract. Asymptomatic HP is considered a benign submucosal tumor (SMT) that can be followed without intervention. However, invasive surgery or endoscopic resection is often inappropriately applied in cases of HP due to the difficulty of preoperative diagnosis by endoscopic ultrasonography (EUS) and tissue sampling error. Therefore, it is very important to distinguish HP from neoplastic SMTs, such as gastrointestinal stromal tumor (GIST), preoperatively. Herein, we describe two asymptomatic gastric HP cases that were distinguished by endoscopic direct imaging (EDI) on submucosal endoscopy with a mucosal flap method (SEMF). In the two patients, EUS-guided fine needle aspiration (FNA) biopsy failed to accurately diagnose two SMTs, consistent with the suspicion of a GIST on EUS. Accordingly, we attempted to perform bloc biopsy using SEMF as a novel method for obtaining tissue samples for two indefinite SMTs. Direct endoscopic imaging via a dissected submucosal tunnel revealed a yellowish, multi-nodular mass identified as pancreatic tissue. Histopathology of the bloc biopsy confirmed the diagnosis of HP. Our findings indicate that the characteristic EDI findings of gastric HP may distinguish these lesions from neoplastic SMTs. Additional evaluations of this approach are warranted.
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Affiliation(s)
- Hideki Kobara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan;
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Tanaka N, Kinoshita H, Jamal M, Tsutsui K, Motomura H, Ameno K. A forensic case of sacralization of the sixth lumbar vertebra in skeletal remains. Bangladesh J Med Sci 2013. [DOI: 10.3329/bjms.v12i2.14977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Lumbosacral transitional vertebrae (LSTVs) are a common congenital anomaly of the spine. In the present case, we observed LSTVs in the excessive (sixth lumbar) vertebra. In forensic practice, this anomaly may be useful for personal identification of skeletal remains. Bangladesh Journal of Medical Science Vol. 12 No. 02 April13 Page 224-226 DOI: http://dx.doi.org/10.3329/bjms.v12i2.14977
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Seki S, Tamura H, Wada Y, Tsutsui K. Depth profiling in secondary ion mass spectrometry for ultra-thin layer with nanometer order thickness by mesa-structure fabrication. SURF INTERFACE ANAL 2012. [DOI: 10.1002/sia.4875] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- S. Seki
- Faculty of Engineering; Takushoku University; 815-1 Tatemachi Hachioji Tokyo 193-0985 Japan
| | - H. Tamura
- Faculty of Engineering; Takushoku University; 815-1 Tatemachi Hachioji Tokyo 193-0985 Japan
| | - Y. Wada
- Graduate School of Interdisciplinary New Science; Toyo University
| | - K. Tsutsui
- Graduate School of Interdisciplinary New Science; Toyo University
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48
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Ohta Y, Nishi S, Haga T, Tsubouchi T, Hasegawa R, Konishi M, Nagano Y, Tsuruwaka Y, Shimane Y, Mori K, Usui K, Suda E, Tsutsui K, Nishimoto A, Fujiwara Y, Maruyama T, Hatada Y. Screening and Phylogenetic Analysis of Deep-Sea Bacteria Capable of Metabolizing Lignin-Derived Aromatic Compounds. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/ojms.2012.24021] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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49
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Tobari Y, Iijima N, Tsunekawa K, Osugi T, Haraguchi S, Ubuka T, Ukena K, Okanoya K, Tsutsui K, Ozawa H. Identification, localisation and functional implication of 26RFa orthologue peptide in the brain of zebra finch (Taeniopygia guttata). J Neuroendocrinol 2011; 23:791-803. [PMID: 21696471 DOI: 10.1111/j.1365-2826.2011.02179.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Several neuropeptides with the C-terminal Arg-Phe-NH(2) (RFa) sequence have been identified in the hypothalamus of a variety of vertebrates. The present study was conducted to isolate novel RFa peptides from the zebra finch brain. Peptides were isolated by immunoaffinity purification using an antibody that recognises avian RFa peptides. The isolated peptide consisted of 25 amino acids with RFa at its C-terminus. The sequence was SGTLGNLAEEINGYNRRKGGFTFRFa. Alignment of the peptide with vertebrate 26RFa has revealed that the identified peptide is the zebra finch 26RFa. We also cloned the precursor cDNA encoding this peptide. Synteny analysis of the gene showed a high conservation of this gene among vertebrates. In addition, we cloned the cDNA encoding a putative 26RFa receptor, G protein-coupled receptor 103 (GPR103) in the zebra finch brain. GPR103 cDNA encoded a 432 amino acid protein that has seven transmembrane domains. In situ hybridisation analysis in the brain showed that the expression of 26RFa mRNA is confined to the anterior-medial hypothalamic area, ventromedial nucleus of the hypothalamus and the lateral hypothalamic area, the brain regions that are involved in the regulation of feeding behaviour, whereas GPR103 mRNA is distributed throughout the brain in addition to the hypothalamic nuclei. When administered centrally in free-feeding male zebra finches, 26RFa increased food intake 24 h after injection without body mass change. Diencephalic GPR103 mRNA expression was up-regulated by fasting for 10 h. Our data suggest that the hypothalamic 26RFa-its receptor system plays an important role in the central control of food intake and energy homeostasis in the zebra finch.
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Affiliation(s)
- Y Tobari
- Department of Anatomy and Neurobiology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
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50
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Shahjahan M, Ikegami T, Osugi T, Ukena K, Doi H, Hattori A, Tsutsui K, Ando H. Synchronised expressions of LPXRFamide peptide and its receptor genes: seasonal, diurnal and circadian changes during spawning period in grass puffer. J Neuroendocrinol 2011; 23:39-51. [PMID: 21083774 DOI: 10.1111/j.1365-2826.2010.02081.x] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Among the RFamide peptide family, the LPXRFamide peptide (LPXRFa) group regulates the release of various pituitary hormones and, recently, LPXRFa genes were found to be regulated by photoperiod via melatonin. As a first step towards investigating the role of LPXRFa on reproductive function in grass puffer (Takifugu niphobles), which spawns in semilunar cycles, genes encoding LPXRFa and its receptor (LPXRFa-R) were cloned, and seasonal, diurnal and circadian changes in their absolute amounts of mRNAs in the brain and pituitary were examined by quantitative real-time polymerase chain reaction. The grass puffer LPXRFa precursor contains two putative RFamide peptides and one possible RYamide peptide. LPXRFa and LPXRFa-R genes were extensively expressed in the diencephalon and pituitary. The expression levels of both genes were significantly elevated during the spawning periods in both sexes in the brain and pituitary, although they were low in the spawning fish just after releasing eggs and sperm. The treatment of primary pituitary cultures with goldfish LPXRFa increased the amounts of follicle-stimulating hormone β- and luteinising hormone β-subunit mRNAs. In the diencephalon, LPXRFa and LPXRFa-R genes showed synchronised diurnal and circadian variations with one peak at zeitgeber time 3 and circadian time 15, respectively. The correlated expression patterns of LPXRFa and LPXRFa-R genes in the diencephalon and pituitary and the possible stimulatory effects of LPXRFa on gonadotrophin subunit gene expression suggest the functional significance of the LPXRFa and LPXRFa-R system in the regulation of lunar-synchronised spawning of grass puffer.
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Affiliation(s)
- M Shahjahan
- Laboratory of Advanced Animal and Marine Bioresources, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Fukuoka, Japan
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