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Morita T, Ohata K, Araki T, Koda M, Fukumori K, Minato Y, Kawaguchi T. Endoscopic hand-suturing training model. Endoscopy 2024; 56:E299-E300. [PMID: 38569500 PMCID: PMC10990598 DOI: 10.1055/a-2282-9977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Affiliation(s)
- Taku Morita
- Department of Gastroenterology, Omuta City General Hospital, Omuta, Japan
| | - Ken Ohata
- Department of Gastroenterology, NTT Medical Center Tokyo, Tokyo, Japan
| | - Toshihiro Araki
- Department of Gastroenterology, Omuta City General Hospital, Omuta, Japan
| | - Makoto Koda
- Department of Gastroenterology, Omuta City General Hospital, Omuta, Japan
| | - Kazuta Fukumori
- Department of Gastroenterology, Omuta City General Hospital, Omuta, Japan
| | - Yohei Minato
- Department of Gastroenterology, NTT Medical Center Tokyo, Tokyo, Japan
| | - Takumi Kawaguchi
- Department of Medichine, Division of Gastroenterology, Kurume University Hospital, Kurume, Japan
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Fukunaga S, Mukasa M, Nakane T, Nakano D, Tsutsumi T, Chou T, Tanaka H, Hayashi D, Minami S, Ohuchi A, Nagata T, Takaki K, Takaki H, Miyajima I, Nouno R, Araki T, Morita T, Torimura T, Okabe Y, Kawaguchi T. Impact of non-obese metabolic dysfunction-associated fatty liver disease on risk factors for the recurrence of esophageal squamous cell carcinoma treated with endoscopic submucosal dissection: A multicenter study. Hepatol Res 2024; 54:201-212. [PMID: 37796562 DOI: 10.1111/hepr.13973] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 09/17/2023] [Accepted: 09/28/2023] [Indexed: 10/06/2023]
Abstract
AIM Metabolic dysfunction is a risk factor for esophageal squamous cell carcinoma (ESCC). We investigated the impact of the recently proposed metabolic dysfunction-associated fatty liver disease (MAFLD) and its subtypes on ESCC recurrence after endoscopic treatment. METHODS This multicenter observational cohort study enrolled consecutive patients newly diagnosed with ESCC after endoscopic treatment. Patients were classified into MAFLD or non-MAFLD groups. The MAFLD group was further classified into non-obese and obese MAFLD groups with a body mass index cutoff value of 25 kg/m2 . The impact of MAFLD on the recurrence of ESCC was evaluated using a decision tree algorithm and random forest analysis. RESULTS A total of 147 patients (average age 69 years; male : female, 127:20; observational period, 2.4 years) were enrolled. The 1-, 3-, and 5-year recurrence rates were 2.0%, 21.1%, and 33.7%, respectively. Independent risk factors for the recurrence of ESCC were MAFLD (HR 2.2812; 95% confidence interval 1.0497-4.9571; p = 0.0373), drinking status, and smoking status. Metabolic dysfunction-associated fatty liver disease was identified as the second most important classifier for recurrence, followed by drinking status. The cumulative incidence of ESCC recurrence was higher in the MAFLD group than in the non-MAFLD group. In a subanalysis, the cumulative incidence of recurrence was significantly higher in the non-obese than in the obese MAFLD group among abstainers/non-drinkers. Directed acyclic graphs revealed that MAFLD directly contributes to ESCC recurrence. CONCLUSIONS MAFLD was independently and directly associated with ESCC recurrence after endoscopic treatment; a high recurrence rate was observed in patients with non-obese MAFLD. Metabolic dysfunction-associated fatty liver disease may identify patients at high risk for ESCC recurrence.
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Affiliation(s)
- Shuhei Fukunaga
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Michita Mukasa
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Tomoyuki Nakane
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Dan Nakano
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Tsubasa Tsutsumi
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Tomonori Chou
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Hiroshi Tanaka
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Daiki Hayashi
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Shinpei Minami
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Akihiro Ohuchi
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Tsutomu Nagata
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | | | | | | | | | | | | | | | - Yoshinobu Okabe
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Takumi Kawaguchi
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
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3
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Araki T, Kanda S, Ide T, Sonehara K, Komatsu M, Tateishi K, Minagawa T, Kiniwa Y, Kawakami S, Nomura S, Okuyama R, Hanaoka M, Koizumi T. Antiplatelet drugs may increase the risk for checkpoint inhibitor-related pneumonitis in advanced cancer patients. ESMO Open 2023; 8:102030. [PMID: 37852033 PMCID: PMC10774871 DOI: 10.1016/j.esmoop.2023.102030] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 07/31/2023] [Accepted: 09/20/2023] [Indexed: 10/20/2023] Open
Abstract
BACKGROUND Immune checkpoint inhibitors (ICIs) are indicated for various cancers and are the mainstay of cancer immunotherapy. They are often associated with ICI-related pneumonitis (CIP), however, hindering a favorable clinical course. Recently, non-oncology concomitant drugs have been reported to affect the efficacy and toxicity of ICIs; however, the association between these drugs and the risk for CIP is uncertain. The aim of this study was to assess the impact of baseline concomitant drugs on CIP incidence in ICI-treated advanced cancer patients. PATIENTS AND METHODS This was a single-center retrospective study that included a cohort of 511 patients with advanced cancer (melanoma and non-small-cell lung, head and neck, genitourinary, and other types of cancer) treated with ICIs. Univariable analysis was conducted to identify baseline co-medications associated with CIP incidence. A propensity score matching analysis was used to adjust for potential CIP risk factors, and multivariable analysis was carried out to assess the impact of the identified co-medications on CIP risk. RESULTS Forty-seven (9.2%) patients developed CIP. In these patients, the organizing pneumonia pattern was the dominant radiological phenotype, and 42.6% had grade ≥3 CIP, including one patient with grade 5. Of the investigated baseline co-medications, the proportion of antiplatelet drugs (n = 50, 9.8%) was higher in patients with CIP (23.4% versus 8.4%). After propensity score matching, the CIP incidence was higher in patients with baseline antiplatelet drugs (22% versus 6%). Finally, baseline antiplatelet drug use was demonstrated to increase the risk for CIP incidence regardless of cancer type (hazard ratio, 3.46; 95% confidence interval 1.21-9.86). CONCLUSIONS An association between concomitant antiplatelet drug use at baseline and an increased risk for CIP was seen in our database. This implies the importance of assessing concomitant medications for CIP risk management.
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Affiliation(s)
- T Araki
- First Department of Internal Medicine, Shinshu University School of Medicine, Matsumoto, Japan
| | - S Kanda
- Department of Hematology and Medical Oncology, Shinshu University School of Medicine, Matsumoto, Japan.
| | - T Ide
- Department of Pharmacy, Shinshu University School of Medicine, Matsumoto, Japan
| | - K Sonehara
- First Department of Internal Medicine, Shinshu University School of Medicine, Matsumoto, Japan
| | - M Komatsu
- First Department of Internal Medicine, Shinshu University School of Medicine, Matsumoto, Japan
| | - K Tateishi
- First Department of Internal Medicine, Shinshu University School of Medicine, Matsumoto, Japan
| | - T Minagawa
- Department of Urology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Y Kiniwa
- Department of Dermatology, Shinshu University School of Medicine, Matsumoto, Japan
| | - S Kawakami
- Department of Radiology, Shinshu University School of Medicine, Matsumoto, Japan
| | - S Nomura
- Department of Biostatistics and Bioinformatics, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - R Okuyama
- Department of Dermatology, Shinshu University School of Medicine, Matsumoto, Japan
| | - M Hanaoka
- First Department of Internal Medicine, Shinshu University School of Medicine, Matsumoto, Japan
| | - T Koizumi
- Department of Hematology and Medical Oncology, Shinshu University School of Medicine, Matsumoto, Japan
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Hayashi K, Tanaka Y, Tsuda T, Nomura A, Fujino N, Furusho H, Sakai N, Iwata Y, Usui S, Sakata K, Kato T, Tada H, Kusayama T, Usuda K, Kawashiri MA, Passman RS, Wada T, Yamagishi M, Takamura M, Fujino N, Nohara A, Kawashiri MA, Hayashi K, Sakata K, Yoshimuta T, Konno T, Funada A, Tada H, Nakanishi C, Hodatsu A, Mori M, Tsuda T, Teramoto R, Nagata Y, Nomura A, Shimojima M, Yoshida S, Yoshida T, Hachiya S, Tamura Y, Kashihara Y, Kobayashi T, Shibayama J, Inaba S, Matsubara T, Yasuda T, Miwa K, Inoue M, Fujita T, Yakuta Y, Aburao T, Matsui T, Higashi K, Koga T, Hikishima K, Namura M, Horita Y, Ikeda M, Terai H, Gamou T, Tama N, Kimura R, Tsujimoto D, Nakahashi T, Ueda K, Ino H, Higashikata T, Kaneda T, Takata M, Yamamoto R, Yoshikawa T, Ohira M, Suematsu T, Tagawa S, Inoue T, Okada H, Kita Y, Fujita C, Ukawa N, Inoguchi Y, Ito Y, Araki T, Oe K, Minamoto M, Yokawa J, Tanaka Y, Mori K, Taguchi T, Kaku B, Katsuda S, Hirase H, Haraki T, Fujioka K, Terada K, Ichise T, Maekawa N, Higashi M, Okeie K, Kiyama M, Ota M, Todo Y, Aoyama T, Yamaguchi M, Noji Y, Mabuchi T, Yagi M, Niwa S, Takashima Y, Murai K, Nishikawa T, Mizuno S, Ohsato K, Misawa K, Kokado H, Michishita I, Iwaki T, Nozue T, Katoh H, Nakashima K, Ito S, Yamagishi M. Correction: Characterization of baseline clinical factors associated with incident worsening kidney function in patients with non-valvular atrial fibrillation: the Hokuriku-Plus AF Registry. Heart Vessels 2023; 38:412. [PMID: 36508013 DOI: 10.1007/s00380-022-02218-5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Kenshi Hayashi
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.
| | - Yoshihiro Tanaka
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.,Center for Arrhythmia Research, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Toyonobu Tsuda
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Akihiro Nomura
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Noboru Fujino
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Hiroshi Furusho
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.,Department of Cardiology, Ishikawa Prefectural Central Hospital, 2-1, Kuratsuki-higashi, Kanazawa, Japan
| | - Norihiko Sakai
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa, Japan
| | - Yasunori Iwata
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa, Japan
| | - Soichiro Usui
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Kenji Sakata
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Takeshi Kato
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Hayato Tada
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Takashi Kusayama
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Keisuke Usuda
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Masa-Aki Kawashiri
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Rod S Passman
- Center for Arrhythmia Research, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,Division of Cardiology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Takashi Wada
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa, Japan
| | - Masakazu Yamagishi
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.,Osaka University of Human Sciences, Settsu, Osaka, Japan
| | - Masayuki Takamura
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
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Obayashi K, Nagamine A, Yashima H, Ohshima S, Uchiyama C, Takahashi E, Takahashi Y, Araki T, Yamamoto K. Comparison of the Antiemetic Effect of Aprepitant/granisetron and Palonosetron Combined with Dexamethasone in Gynecological Cancer Patients Treated with Paclitaxel and Carboplatin Combination Regimen. Pharmazie 2022; 77:157-161. [PMID: 35655378 DOI: 10.1691/ph.2022.12000] [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: 06/15/2023]
Abstract
A triple antiemetic therapy combining aprepitant (APR) with conventional double antiemetic therapy, including 5-hydroxytryptamine 3 receptor antagonist (5-HT₃-RA) and dexamethasone (DEX), is recommended for preventing chemotherapy-induced nausea and vomiting induced by a carboplatin (CBDCA) regimen. However, consensus on the additive effects of APR for gynecological patients on a combined regimen of paclitaxel and CBDCA (TC regimen) has yet to be reached. This retrospective study investigated the antiemetic effects of palonosetron and DEX (PD therapy) and granisetron and DEX with APR (GDA therapy) in patients with gynecologic cancer and who underwent their first TC regimen cycle between April 2017 and March 2020 at the Gunma University Hospital Outpatient Chemotherapy Center. The results showed that the complete response rate of the 92 patients who underwent PD therapy (PD group) and the 46 patients who underwent GDA therapy (GDA group) were both 80.4% (p = 1.000), and the complete control rates of the PD and GDA groups were 78.3% and 80.4%, respectively (p = 0.828), resulting in no significant difference. Furthermore, we observed no significant difference between the PD and GDA groups in the incidence of grade ≥2 nausea, vomiting, and anorexia (nausea: 7.6% vs. 0%, p = 0.095; vomiting: 4.3% vs. 0%, p = 0.301; and anorexia: 9.8% vs. 2.2%, p = 0.164). Concerning adverse events, compared to the PD group, the GDA group showed significantly higher incidence of grade ≥2 malaise (7.6% vs. 19.6%, p = 0.039). Given the lack of difference in the antiemetic effects of PD and GDA therapies, antiemetic therapy should be selected carefully for individual patients by accounting for the incidence of adverse reactions and interactions with APR.
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Affiliation(s)
- K Obayashi
- Laboratory of Clinical Pharmacy, Faculty of Pharmacy, Takasaki University of Health and Welfare; Education Center for Clinical Pharmacy, Faculty of Pharmacy, Takasaki University of Health and Welfare; Department of Clinical Pharmacology and Therapeutics, Gunma University Graduate School of Medicine; Laboratory of Clinical Pharmacy, Faculty of Pharmacy, Takasaki University of Health and Welfare, 60 Nakaorui-machi, Takasaki-shi, Gunma, 370-0033, Japan;,
| | - A Nagamine
- Education Center for Clinical Pharmacy, Faculty of Pharmacy, Takasaki University of Health and Welfare; Department of Clinical Pharmacology and Therapeutics, Gunma University Graduate School of Medicine
| | - H Yashima
- Department of Clinical Pharmacology and Therapeutics, Gunma University Graduate School of Medicine; Department of Pharmacy, Gunma University Hospital, Gunma, Japan
| | - S Ohshima
- Department of Pharmacy, Gunma University Hospital, Gunma, Japan
| | - C Uchiyama
- Laboratory of Clinical Pharmacy, Faculty of Pharmacy, Takasaki University of Health and Welfare; Department of Pharmacy, Gunma University Hospital, Gunma, Japan
| | - E Takahashi
- Laboratory of Clinical Pharmacy, Faculty of Pharmacy, Takasaki University of Health and Welfare; Education Center for Clinical Pharmacy, Faculty of Pharmacy, Takasaki University of Health and Welfare
| | - Y Takahashi
- Education Center for Clinical Pharmacy, Faculty of Pharmacy, Takasaki University of Health and Welfare; Department of Clinical Pharmacology and Therapeutics, Gunma University Graduate School of Medicine
| | - T Araki
- Department of Clinical Pharmacology and Therapeutics, Gunma University Graduate School of Medicine; Department of Pharmacy, Gunma University Hospital, Gunma, Japan
| | - K Yamamoto
- Department of Clinical Pharmacology and Therapeutics, Gunma University Graduate School of Medicine; Department of Pharmacy, Gunma University Hospital, Gunma, Japan
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Araki T, Watanabe Y, Okada Y, Murakami H, Ogo N, Asai A. Identification of serum and glucocorticoid-regulated kinase 1 as a regulator of signal transducer and activator of transcription 3 signaling. Exp Cell Res 2022; 413:113079. [PMID: 35202674 DOI: 10.1016/j.yexcr.2022.113079] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/20/2021] [Accepted: 02/11/2022] [Indexed: 11/18/2022]
Abstract
Signal transducer and activator of transcription 3 (STAT3) plays key roles in cancer cell proliferation, invasion, and immunosuppression. In many human cancer cells, STAT3 is hyperactivated, which leads to tumor progression and drug resistance, and therefore STAT3 and its modulators are considered effective drug targets. However, the complex regulatory mechanisms of STAT3 have made it difficult to develop potent anticancer drugs that suppress its activity. Here, we report serum and glucocorticoid-regulated kinase 1 (SGK1) as a novel regulator of STAT3 signaling and an effective target for combination therapy with Janus kinase (JAK) inhibitors. We screened small molecules using a gain-of-function mutant of STAT3 resistant to JAK inhibition and found that an SGK1 inhibitor suppressed the constitutive activation of STAT3. Importantly, our results revealed that SGK1 also mediated the activation of wild-type STAT3. Further examination suggested that the tuberous sclerosis complex 2 and mammalian target of rapamycin signaling pathway were involved in STAT3 activation by SGK1. Finally, we demonstrated that SGK1 inhibition enhanced the inhibitory effect of a JAK inhibitor on STAT3 phosphorylation and cancer cell proliferation. Our findings provide new insights into the molecular mechanisms of STAT3 activation and suggest SGK1 as a potential target for STAT3-targeted combination cancer therapy.
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Affiliation(s)
- Toshihiro Araki
- Center for Drug Discovery, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Suruga-ku, Shizuoka, Shizuoka, Japan; Discovery Technology Laboratories, Sohyaku. Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Muraoka-Higashi, Fujisawa, Kanagawa, Japan
| | - Yuuki Watanabe
- Center for Drug Discovery, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Suruga-ku, Shizuoka, Shizuoka, Japan; Public Affairs and Policy Department, Mitsubishi Tanabe Pharma Corporation, Marunouchi, Chiyoda-ku, Tokyo, Japan
| | - Yusuke Okada
- Sohyaku Project Planning & Management Department, Sohyaku Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Marunouchi, Chiyoda-ku, Tokyo, Japan
| | - Hisashi Murakami
- Center for Drug Discovery, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Suruga-ku, Shizuoka, Shizuoka, Japan
| | - Naohisa Ogo
- Center for Drug Discovery, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Suruga-ku, Shizuoka, Shizuoka, Japan
| | - Akira Asai
- Center for Drug Discovery, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Suruga-ku, Shizuoka, Shizuoka, Japan.
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7
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Steele A, Benning LG, Wirth R, Schreiber A, Araki T, McCubbin FM, Fries MD, Nittler LR, Wang J, Hallis LJ, Conrad PG, Conley C, Vitale S, O'Brien AC, Riggi V, Rogers K. Organic synthesis associated with serpentinization and carbonation on early Mars. Science 2022; 375:172-177. [PMID: 35025630 DOI: 10.1126/science.abg7905] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Water-rock interactions are relevant to planetary habitability, influencing mineralogical diversity and the production of organic molecules. We examine carbonates and silicates in the martian meteorite Allan Hills 84001 (ALH 84001), using colocated nanoscale analyses, to characterize the nature of water-rock reactions on early Mars. We find complex refractory organic material associated with mineral assemblages that formed by mineral carbonation and serpentinization reactions. The organic molecules are colocated with nanophase magnetite; both formed in situ during water-rock interactions on Mars. Two potentially distinct mechanisms of abiotic organic synthesis operated on early Mars during the late Noachian period (3.9 to 4.1 billion years ago).
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Affiliation(s)
- A Steele
- Carnegie Institution for Science, Earth and Planets Laboratory, Washington, DC 20015, USA
| | - L G Benning
- Deutsches GeoForschungsZentrum, Telegrafenberg, 14473 Potsdam, Germany.,Department of Earth Sciences, Free University of Berlin, 12249 Berlin, Germany
| | - R Wirth
- Deutsches GeoForschungsZentrum, Telegrafenberg, 14473 Potsdam, Germany
| | - A Schreiber
- Deutsches GeoForschungsZentrum, Telegrafenberg, 14473 Potsdam, Germany
| | - T Araki
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
| | - F M McCubbin
- NASA Johnson Space Center, Houston, TX 77058, USA
| | - M D Fries
- NASA Johnson Space Center, Houston, TX 77058, USA
| | - L R Nittler
- Carnegie Institution for Science, Earth and Planets Laboratory, Washington, DC 20015, USA
| | - J Wang
- Carnegie Institution for Science, Earth and Planets Laboratory, Washington, DC 20015, USA
| | - L J Hallis
- School of Geographical and Earth Science, University of Glasgow, Glasgow G12 8QQ, UK
| | - P G Conrad
- Carnegie Institution for Science, Earth and Planets Laboratory, Washington, DC 20015, USA
| | - C Conley
- NASA Ames Research Center, Mountain View, CA 94035, USA
| | - S Vitale
- Carnegie Institution for Science, Earth and Planets Laboratory, Washington, DC 20015, USA
| | - A C O'Brien
- School of Geographical and Earth Science, University of Glasgow, Glasgow G12 8QQ, UK
| | - V Riggi
- Carnegie Institution for Science, Earth and Planets Laboratory, Washington, DC 20015, USA
| | - K Rogers
- Earth and Environmental Sciences, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
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8
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Mori A, Mitsuyama K, Sakemi R, Yoshioka S, Fukunaga S, Kuwaki K, Yamauchi R, Araki T, Yoshimura T, Yamasaki H, Tsuruta K, Morita T, Yamasaki S, Tsuruta O, Torimura T. Evaluation of Serum Calprotectin Levels in Patients with Inflammatory Bowel Disease. Kurume Med J 2021; 66:209-215. [PMID: 34690210 DOI: 10.2739/kurumemedj.ms664009] [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] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Fecal calprotectin has been proposed as a useful biomarker of disease activity in inflammatory bowel disease (IBD). However, the role of calprotectin in systemic circulation is not well established. Thus, this study aimed to quantify serum calprotectin levels to identify a potential inflammatory marker for IBD. METHODS Ninety-eight patients with ulcerative colitis (UC) and 105 patients with Crohn's disease (CD) were prospectively enrolled and clinically scored. Ninety-two healthy, age-matched subjects served as controls. Blood samples from UC and CD patients and controls were analyzed for serum calprotectin levels and routine laboratory parameters. Disease activity was assessed by partial Mayo score and Harvey-Bradshaw index for UC and CD, respectively. RESULTS Serum calprotectin levels were higher in CD and UC patients than in controls and were higher during active disease than during inactive disease in CD but not in UC. In UC, serum calprotectin levels were correlated with C-reactive protein (CRP) but not with other laboratory parameters or disease activity. In CD, serum calprotectin levels were positively correlated with disease activity, serum CRP, and platelet count. In UC and CD, serum calprotectin and CRP levels increased during the acute phase and decreased towards remission. CONCLUSIONS Serum calprotectin is an inflammatory marker in IBD but might be more effective in evaluating patients with CD than those with UC. Further studies are needed to confirm these findings and to better determine the specific uses of serum calprotectin in routine practice.
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Affiliation(s)
- Atsushi Mori
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Keiichi Mitsuyama
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine.,Inflammatory Bowel Disease Center, Kurume University School of Medicine
| | - Ryosuke Sakemi
- Department of Gastroenterology, Tobata Kyoritsu Hospital
| | - Shinichiro Yoshioka
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Shuhei Fukunaga
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Kotaro Kuwaki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Ryosuke Yamauchi
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Toshihiro Araki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Tetsuhiro Yoshimura
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Hiroshi Yamasaki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Kozo Tsuruta
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Taku Morita
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Sayo Yamasaki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Osamu Tsuruta
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Takuji Torimura
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
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9
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Araki T, Okumura T, Mizutani T, Kimura Y, Kazama S, Shibata N, Oishi H, Kuwayama T, Hiraiwa H, Kondo T, Morimoto R, Takefuji M, Murohara T. Serum autotaxin level predicts future cardiac events in patients with dilated cardiomyopathy. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1730] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Autotaxin (ATX) has been reported to promote myocardial inflammation and subsequent cardiac remodeling through lysophosphatidic acid (LPA) production. However, the prognostic impact of ATX has not been clarified in dilated cardiomyopathy (DCM).
Purpose
We aimed to investigate the prognostic impact of ATX in patients with DCM.
Methods
We enrolled 104 DCM patients (49.8 years, 76 males). The subjects underwent blood sampling, echocardiography, cardiac catheterization, and endomyocardial biopsy. Gender differences in serum ATX levels have been reported, thus we divided the subjects into two groups using median serum ATX levels for men and women: High-ATX group and Low-ATX group. All patients were followed up by expert cardiologists. The cardiac event was defined as a composite of cardiac death and hospitalization for worsening heart failure.
Results
Eighty-nine percent of the subjects were classified as New York Heart Association functional class I or II. Female patients had higher serum ATX levels than male patients, with median values of 257.0 ng/mL and 203.5 ng/mL, respectively (Figure A). The average left ventricular ejection fraction and brain natriuretic peptide levels were 30.6% and 122.5 pg/mL. In survival analysis, cumulative event-free probability was significantly lower in High ATX group (p=0.007, Figure B). In Cox proportional hazards analysis, High-ATX was one of the independent predictors of composite cardiac events (Hazards Ratio, 2.575; p=0.043). On the other hand, high sensitive C-reactive protein and collagen volume fraction in myocardial samples were not significant predictors.
Conclusion
High serum ATX level was associated with poor prognosis in patients with DCM.
Funding Acknowledgement
Type of funding sources: None. Gender difference in autotaxin levelsSurvival analysis of cardiac events
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Affiliation(s)
- T Araki
- Nagoya University Graduate School of Medicine, Cardiology, Nagoya, Japan
| | - T Okumura
- Nagoya University Graduate School of Medicine, Cardiology, Nagoya, Japan
| | - T Mizutani
- Nagoya University Graduate School of Medicine, Cardiology, Nagoya, Japan
| | - Y Kimura
- Nagoya University Graduate School of Medicine, Cardiology, Nagoya, Japan
| | - S Kazama
- Nagoya University Graduate School of Medicine, Cardiology, Nagoya, Japan
| | - N Shibata
- Nagoya University Graduate School of Medicine, Cardiology, Nagoya, Japan
| | - H Oishi
- Nagoya University Graduate School of Medicine, Cardiology, Nagoya, Japan
| | - T Kuwayama
- Nagoya University Graduate School of Medicine, Cardiology, Nagoya, Japan
| | - H Hiraiwa
- Nagoya University Graduate School of Medicine, Cardiology, Nagoya, Japan
| | - T Kondo
- Nagoya University Graduate School of Medicine, Cardiology, Nagoya, Japan
| | - R Morimoto
- Nagoya University Graduate School of Medicine, Cardiology, Nagoya, Japan
| | - M Takefuji
- Nagoya University Graduate School of Medicine, Cardiology, Nagoya, Japan
| | - T Murohara
- Nagoya University Graduate School of Medicine, Cardiology, Nagoya, Japan
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10
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Hiraiwa H, Okumura T, Sawamura A, Kondo T, Araki T, Mizutani T, Kazama S, Kimura Y, Shibata N, Oishi H, Kuwayama T, Furusawa K, Morimoto R, Murohara T. Clinical significance of spleen size in patients with heart failure. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0756] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
The spleen is an important organ that stores blood, releases erythrocytes or monocytes, and destroys no-longer-needed platelets. It can reserve 20–30% of the total blood volume, and its size is reduced in hypovolemic shock. However, the clinical significance of the spleen size in patients with heart failure (HF) remains unclear.
Purpose
The purpose of this study was to investigate the relationship between spleen size, hemodynamic parameters, and prognosis in patients with HF.
Methods
A total of 219 patients with clinically stable HF were enrolled. All patients underwent right heart catheterisation and computed tomography. The spleen size was measured using computed tomography volumetry. In addition, spleen volume was assessed using the spleen volume index (SVI), corrected for body surface area. Cardiac events were composite endpoints of cardiac death, hospitalisation for worsening HF, fatal arrhythmias, implantation of cardiac devices, implantation of left ventricular assist devices, and unexpected percutaneous coronary intervention or cardiac surgery. Spearman's rank correlation coefficient was used to examine the relationship between spleen volume and hemodynamic parameters. Multivariate Cox hazard regression models were used to investigate whether SVI was an independent determinant of cardiac events.
Results
Of the 219 patients (median age, 54 [interquartile range] 46–64 years), 145 (66%) were males. The median (interquartile range) spleen volume and SVI was 118.0 (91.5–156.0) mL and 67.8 (54.9–87.2) mL/m2, respectively. SVI was positively correlated with cardiac output (r=0.269, P<0.001), and negatively correlated with systemic vascular resistance (r=−0.302, P<0.001) (Figure 1). A total of 70 cardiac events were observed, and the optimal cut-off value of SVI for cardiac events was 68.9 mL/m2 in the receiver operating characteristic analysis. Patients were divided into two groups: low-SVI (n=107, <68.9 mL/m2) and high-SVI groups (n=112, ≥68.9 mL/m2). Blood adrenaline concentration was higher in the low-SVI group than in the high-SVI group (0.039 [0.020–0.057] ng/mL vs 0.026 [0.014–0.044] ng/mL, P=0.004). The low-SVI group had more cardiac events than the high-SVI group (log-rank test, P<0.001) (Figure 2). In the multivariate Cox proportional hazard model, the low-SVI group was an independent predictor of cardiac events, even when adjusted for the conventional validated HF risk score, blood catecholamine levels, and hemodynamic parameters.
Conclusion
The spleen size may affect the prognosis in patients with HF, reflecting haemodynamics, including systemic circulating blood volume status and sympathetic nerve activity.
Funding Acknowledgement
Type of funding sources: None. Figure 1Figure 2
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Affiliation(s)
- H Hiraiwa
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - T Okumura
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - A Sawamura
- Ichinomiya municipal hospital, Department of Cardiology, Ichinomiya, Japan
| | - T Kondo
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - T Araki
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - T Mizutani
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - S Kazama
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - Y Kimura
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - N Shibata
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - H Oishi
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - T Kuwayama
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - K Furusawa
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - R Morimoto
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - T Murohara
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
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11
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Shibata N, Hiraiwa H, Kazama S, Kimura Y, Araki T, Mizutani T, Oishi H, Kuwayama T, Kondo T, Morimoto R, Okumura T, Murohara T. Clinical impact of pulmonary artery to aorta diameter ratio on left ventricular reverse remodeling in patients with dilated cardiomyopathy. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0757] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Left ventricular reverse remodeling (LVRR) is an important predictor for a good prognosis in patients with dilated cardiomyopathy (DCM). Previous reports indicated the pulmonary artery diameter (PAD) to ascending aortic diameter (AoD) ratio as a predictor of adverse outcomes in heart failure patients. However, the impact of the PAD/AoD ratio for predicting LVRR in patients with DCM is unknown.
Aim
The aim of this study is to investigate the association between PAD/AoD ratio and LVRR in patients with DCM.
Methods
From a prospective study, clinically stable DCM patients who were investigated the LVRR on echocardiography and underwent CT at baseline were enrolled. LVRR is defined as left ventricular (LV) ejection fraction increase of 10% and a decrease in indexed LV end-diastolic diameter of 10% compared to those at baseline. PAD and AoD data was collected with nonenhanced computed tomography images at baseline.
Results
In sixty-nine patients (mean age 50.0±13.3 years), the mean LV ejection fraction was 29.8%, and mean LV end-diastolic dimension was 64.5mm, and both of which data was no significant difference between patients with or without LVRR. LVRR was observed in 23 (33.3%) patients. The PAD/AoD ratio was significantly lower in patients with LVRR than without LVRR (81.4% vs. 92.4%, p=0.003). By ROC analysis, the best cut-off for the detection of LVRR was found for a PAD/AoD ratio of 0.9. From multivariate analyses, PAD/AoD ratio was identified as a significant predictor of LVRR. After a median follow-up duration of 2.5 years, the DCM patients with PAD/AoD≥0.9 revealed a significant higher cardiac event than those with PAD/AoD<0.9 (log-rank, p=0.007)
Conclusions
The PAD/AoD ratio is useful for predicting LVRR in patients with DCM. The DCM patients with high PAD/AoD ratio had a poor long-term outcome.
Funding Acknowledgement
Type of funding sources: None. ROC curve for LVRR predictionKaplan-Meier survival curves
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Affiliation(s)
- N Shibata
- Nagoya University Hospital, Department of cardiology, Nagoya, Japan
| | - H Hiraiwa
- Nagoya University Hospital, Department of cardiology, Nagoya, Japan
| | - S Kazama
- Nagoya University Hospital, Department of cardiology, Nagoya, Japan
| | - Y Kimura
- Nagoya University Hospital, Department of cardiology, Nagoya, Japan
| | - T Araki
- Nagoya University Hospital, Department of cardiology, Nagoya, Japan
| | - T Mizutani
- Nagoya University Hospital, Department of cardiology, Nagoya, Japan
| | - H Oishi
- Nagoya University Hospital, Department of cardiology, Nagoya, Japan
| | - T Kuwayama
- Nagoya University Hospital, Department of cardiology, Nagoya, Japan
| | - T Kondo
- Nagoya University Hospital, Department of cardiology, Nagoya, Japan
| | - R Morimoto
- Nagoya University Hospital, Department of cardiology, Nagoya, Japan
| | - T Okumura
- Nagoya University Hospital, Department of cardiology, Nagoya, Japan
| | - T Murohara
- Nagoya University Hospital, Department of cardiology, Nagoya, Japan
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12
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Araki T, Mitsuyama K, Yamasaki H, Morita M, Tsuruta K, Mori A, Yoshimura T, Fukunaga S, Kuwaki K, Yoshioka S, Takedatsu H, Kakuma T, Akiba J, Torimura T. Therapeutic Potential of a Self-Assembling Peptide Hydrogel to Treat Colonic Injuries Associated with Inflammatory Bowel Disease. J Crohns Colitis 2021; 15:1517-1527. [PMID: 33596312 PMCID: PMC8464220 DOI: 10.1093/ecco-jcc/jjab033] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND AIMS The Self-assembling Peptide Hydrogel [SAPH, PuraMatrix], a fully synthetic peptide solution designed to replace collagen, has recently been used to promote mucosal regeneration in iatrogenic ulcers following endoscopic submucosal dissection. Herein, we evaluated its utility in ulcer repair using a rat model of topical trinitrobenzene sulphonic acid [TNBS]-induced colonic injuries. METHODS Colonic injuries were generated in 7-week-old rats by injecting an ethanol solution [35%, 0.2 mL] containing 0.15 M TNBS into the colonic lumen. At 2 and 4 days post-injury, the rats were subjected to endoscopy, and SAPH [or vehicle] was topically applied to the ulcerative lesion. Time-of-flight secondary ion mass spectrometry [TOF-SIMS] was used to detect SAPH. Colonic expression of cytokines and wound healing-related factors were assessed using real-time polymerase chain reaction or immunohistochemistry. RESULTS SAPH treatment significantly reduced ulcer length [p = 0.0014] and area [p = 0.045], while decreasing colonic weight [p = 0.0375] and histological score [p = 0.0005] 7 days after injury. SAPH treatment also decreased colonic expression of interleukin [IL]-1α [p = 0.0233] and IL-6[p = 0.0343] and increased that of claudin-1 [p = 0.0486] and villin [p = 0.0183], and β-catenin staining [p = 0.0237]. TOF-SIMS revealed lesional retention of SAPH on day 7 post-injury. Furthermore, SAPH significantly promoted healing in in vivo mechanical intestinal wound models. CONCLUSIONS SAPH application effectively suppressed colonic injury, downregulated inflammatory cytokine expression, and upregulated wound healing-related factor expression in the rat model; thus, it may represent a promising therapeutic strategy for IBD-related colonic ulcers.
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Affiliation(s)
- Toshihiro Araki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Keiichi Mitsuyama
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
- Inflammatory Bowel Disease Center, Kurume University Hospital, Kurume, Japan
- Corresponding author: Keiichi Mitsuyama, MD, PhD, Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan. Tel: 81-942-31-7561; Fax: 81-942-34-2623;
| | - Hiroshi Yamasaki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Masaru Morita
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Kozo Tsuruta
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Atsushi Mori
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Tetsuhiro Yoshimura
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Shuhei Fukunaga
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Kotaro Kuwaki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Shinichiro Yoshioka
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Hidetoshi Takedatsu
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Tatsuyuki Kakuma
- Biostatistics Center, Kurume University School of Medicine, Kurume, Japan
| | - Jun Akiba
- Department of Diagnostic Pathology, Kurume University Hospital, Kurume, Japan
| | - Takuji Torimura
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
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13
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Yoshimura T, Mitsuyama K, Sakemi R, Takedatsu H, Yoshioka S, Kuwaki K, Mori A, Fukunaga S, Araki T, Morita M, Tsuruta K, Yamasaki H, Torimura T. Evaluation of Serum Leucine-Rich Alpha-2 Glycoprotein as a New Inflammatory Biomarker of Inflammatory Bowel Disease. Mediators Inflamm 2021; 2021:8825374. [PMID: 33623482 PMCID: PMC7874844 DOI: 10.1155/2021/8825374] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 12/24/2020] [Accepted: 01/05/2021] [Indexed: 12/11/2022] Open
Abstract
Studies on serum leucine-rich alpha-2 glycoprotein (LRG) in inflammatory bowel disease (IBD), including ulcerative colitis (UC) and Crohn's disease (CD), are scarce; the methods for estimating disease activity are less established, particularly for CD. This study is aimed at evaluating the utility of serum LRG as a potential inflammatory marker for IBD and to investigate the LRG gene expression in peripheral blood mononuclear cells (PBMCs) as a possible source of serum LRG. Overall, 98 patients with UC and 96 patients with CD were prospectively enrolled and clinically evaluated; 92 age-matched individuals served as the healthy controls. The blood samples were analyzed for serum LRG levels and routine laboratory parameters. Disease activity was assessed clinically and endoscopically. Finally, LRG gene expression in the PBMCs from a different cohort (41 patients with UC, 34 patients with CD, and 30 healthy controls) was examined. The serum LRG levels were higher during active disease than during inactive disease; additionally, serum LRG levels were positively correlated with clinical disease activity, C-reactive protein (CRP) levels, and other laboratory parameters in patients with UC and CD and with endoscopic disease activity in UC. UC and CD showed comparable areas under the curve (AUC) values for determining clinical remission and differentiating between endoscopic remission associated with LRG and CRP. The levels of LRG mRNA were also increased in PBMCs from patients with UC and CD and reflected disease activity. These data suggest that serum LRG, originated partially from PBMCs, is an inflammatory marker in UC and CD. A large-scale well-designed study should be conducted in the future to more accurately reveal the clinical significance of LRG in patients with IBD.
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Affiliation(s)
- Tetsuhiro Yoshimura
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
- Inflammatory Bowel Disease Center, Kurume University Hospital, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Keiichi Mitsuyama
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
- Inflammatory Bowel Disease Center, Kurume University Hospital, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Ryosuke Sakemi
- Department of Gastroenterology, Tobata Kyoritsu Hospital, Kitakyushu, Japan
| | - Hidetoshi Takedatsu
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
- Inflammatory Bowel Disease Center, Kurume University Hospital, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Shinichiro Yoshioka
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
- Inflammatory Bowel Disease Center, Kurume University Hospital, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Kotaro Kuwaki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Atsushi Mori
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
- Inflammatory Bowel Disease Center, Kurume University Hospital, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Shuhei Fukunaga
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
- Inflammatory Bowel Disease Center, Kurume University Hospital, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Toshihiro Araki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
- Inflammatory Bowel Disease Center, Kurume University Hospital, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Masaru Morita
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
- Inflammatory Bowel Disease Center, Kurume University Hospital, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Kozo Tsuruta
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
- Inflammatory Bowel Disease Center, Kurume University Hospital, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Hiroshi Yamasaki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Takuji Torimura
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
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14
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Sakemi R, Mitsuyama K, Morita M, Yoshioka S, Kuwaki K, Tokuyasu H, Fukunaga S, Mori A, Araki T, Yoshimura T, Yamasaki H, Tsuruta K, Morita T, Yamasaki S, Mizoguchi A, Sou S, Torimura T. Altered serum profile of the interleukin-22 system in inflammatory bowel disease. Cytokine 2020; 136:155264. [PMID: 32920320 DOI: 10.1016/j.cyto.2020.155264] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 08/17/2020] [Accepted: 08/20/2020] [Indexed: 12/27/2022]
Abstract
BACKGROUND AND AIM Interleukin-22 (IL-22), plays a vital role in the mucosal repair of inflammatory bowel disease (IBD). Serum levels of IL-22 and IL-22 binding protein (IL-22BP), a soluble inhibitory IL-22 receptor, were measured in patients with IBD to investigate the profile of IL-22 in the systemic circulation. METHODS Blood samples from 92 healthy subjects, 98 patients with ulcerative colitis (UC), and 105 patients with Crohn's disease (CD) were analyzed for serum levels of IL-22, IL-22BP, human β-defensin 2 (hBD-2), and serum inflammatory parameters. Disease activity was assessed by the partial Mayo score and Harvey-Bradshaw index for UC and CD, respectively. RESULTS Serum IL-22 level was lower in UC (P < 0.001) and CD (P < 0.001) vs control and its decrease was more pronounced in CD than in UC (P = 0.019). Serum IL-22BP level was lower in UC (P < 0.001) and CD (P < 0.001) vs control and correlated with inflammatory parameters (albumin and C-reactive protein (CRP) in UC; hemoglobin, albumin, and CRP in CD). Serum IL-22/IL-22BP ratios were higher in UC (P = 0.009) vs control and correlated with inflammatory parameters (albumin and CRP). Serum hBD-2 level was higher only in CD (P = 0.015) but did not correlate with serum IL-22 levels, IL-22BP levels, IL-22/IL-22BP ratios, or inflammatory parameters. CONCLUSIONS Dysregulation of the IL-22 system in the blood may play a role in the pathogenesis of IBD. Further studies are needed to understand the pathogenic and clinical significance of the blood IL-22 system in IBD.
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Affiliation(s)
- Ryosuke Sakemi
- Department of Gastroenterology, Tobata Kyoritsu Hospital, 2-5-1 Sawami, Tobata-ku, Kitakyushu 804-0093, Japan
| | - Keiichi Mitsuyama
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan; Inflammatory Bowel Disease Center, Kurume University Hospital, 67 Asahi-machi, Kurume 830-0011, Japan.
| | - Masaru Morita
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Shinichiro Yoshioka
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Kotaro Kuwaki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Hidenori Tokuyasu
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Shuhei Fukunaga
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Atsushi Mori
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Toshihiro Araki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Tetsuhiro Yoshimura
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Hiroshi Yamasaki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Kozo Tsuruta
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Taku Morita
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Sayo Yamasaki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Atsushi Mizoguchi
- Department of Immunology, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
| | - Suketo Sou
- Department of Gastroenterology, Tobata Kyoritsu Hospital, 2-5-1 Sawami, Tobata-ku, Kitakyushu 804-0093, Japan
| | - Takuji Torimura
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan
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15
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Morita T, Mitsuyama K, Yamasaki H, Mori A, Yoshimura T, Araki T, Morita M, Tsuruta K, Yamasaki S, Kuwaki K, Yoshioka S, Takedatsu H, Torimura T. Gene Expression of Transient Receptor Potential Channels in Peripheral Blood Mononuclear Cells of Inflammatory Bowel Disease Patients. J Clin Med 2020; 9:jcm9082643. [PMID: 32823895 PMCID: PMC7547374 DOI: 10.3390/jcm9082643] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 07/11/2020] [Revised: 08/02/2020] [Accepted: 08/12/2020] [Indexed: 12/29/2022] Open
Abstract
We examined the expression profile of transient receptor potential (TRP) channels in peripheral blood mononuclear cells (PBMCs) from patients with inflammatory bowel disease (IBD). PBMCs were obtained from 41 ulcerative colitis (UC) patients, 34 Crohn's disease (CD) patients, and 30 normal subjects. mRNA levels of TRP channels were measured using the quantitative real-time polymerase chain reaction, and correlation tests with disease ranking, as well as laboratory parameters, were performed. Compared with controls, TRPV2 and TRPC1 mRNA expression was lower, while that of TRPM2, was higher in PBMCs of UC and CD patients. Moreover, TRPV3 mRNA expression was lower, while that of TRPV4 was higher in CD patients. TRPC6 mRNA expression was higher in patients with CD than in patients with UC. There was also a tendency for the expression of TRPV2 mRNA to be negatively correlated with disease activity in patients with UC and CD, while that of TRPM4 mRNA was negatively correlated with disease activity only in patients with UC. PBMCs from patients with IBD exhibited varying mRNA expression levels of TRP channel members, which may play an important role in the progression of IBD.
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Affiliation(s)
- Taku Morita
- Department of Medicine, Division of Gastroenterology, School of Medicine, Kurume University, 67 Asahi-Machi, Kurume 830-0011, Japan; (T.M.); (H.Y.); (A.M.); (T.Y.); (T.A.); (M.M.); (K.T.); (S.Y.); (K.K.); (S.Y.); (H.T.); (T.T.)
| | - Keiichi Mitsuyama
- Department of Medicine, Division of Gastroenterology, School of Medicine, Kurume University, 67 Asahi-Machi, Kurume 830-0011, Japan; (T.M.); (H.Y.); (A.M.); (T.Y.); (T.A.); (M.M.); (K.T.); (S.Y.); (K.K.); (S.Y.); (H.T.); (T.T.)
- Inflammatory Bowel Disease Center, Kurume University Hospital, 67 Asahi-Machi, Kurume 830-0011, Japan
- Correspondence: ; Tel.: +81-942-31-7561
| | - Hiroshi Yamasaki
- Department of Medicine, Division of Gastroenterology, School of Medicine, Kurume University, 67 Asahi-Machi, Kurume 830-0011, Japan; (T.M.); (H.Y.); (A.M.); (T.Y.); (T.A.); (M.M.); (K.T.); (S.Y.); (K.K.); (S.Y.); (H.T.); (T.T.)
- Inflammatory Bowel Disease Center, Kurume University Hospital, 67 Asahi-Machi, Kurume 830-0011, Japan
| | - Atsushi Mori
- Department of Medicine, Division of Gastroenterology, School of Medicine, Kurume University, 67 Asahi-Machi, Kurume 830-0011, Japan; (T.M.); (H.Y.); (A.M.); (T.Y.); (T.A.); (M.M.); (K.T.); (S.Y.); (K.K.); (S.Y.); (H.T.); (T.T.)
- Inflammatory Bowel Disease Center, Kurume University Hospital, 67 Asahi-Machi, Kurume 830-0011, Japan
| | - Tetsuhiro Yoshimura
- Department of Medicine, Division of Gastroenterology, School of Medicine, Kurume University, 67 Asahi-Machi, Kurume 830-0011, Japan; (T.M.); (H.Y.); (A.M.); (T.Y.); (T.A.); (M.M.); (K.T.); (S.Y.); (K.K.); (S.Y.); (H.T.); (T.T.)
- Inflammatory Bowel Disease Center, Kurume University Hospital, 67 Asahi-Machi, Kurume 830-0011, Japan
| | - Toshihiro Araki
- Department of Medicine, Division of Gastroenterology, School of Medicine, Kurume University, 67 Asahi-Machi, Kurume 830-0011, Japan; (T.M.); (H.Y.); (A.M.); (T.Y.); (T.A.); (M.M.); (K.T.); (S.Y.); (K.K.); (S.Y.); (H.T.); (T.T.)
- Inflammatory Bowel Disease Center, Kurume University Hospital, 67 Asahi-Machi, Kurume 830-0011, Japan
| | - Masaru Morita
- Department of Medicine, Division of Gastroenterology, School of Medicine, Kurume University, 67 Asahi-Machi, Kurume 830-0011, Japan; (T.M.); (H.Y.); (A.M.); (T.Y.); (T.A.); (M.M.); (K.T.); (S.Y.); (K.K.); (S.Y.); (H.T.); (T.T.)
- Inflammatory Bowel Disease Center, Kurume University Hospital, 67 Asahi-Machi, Kurume 830-0011, Japan
| | - Kozo Tsuruta
- Department of Medicine, Division of Gastroenterology, School of Medicine, Kurume University, 67 Asahi-Machi, Kurume 830-0011, Japan; (T.M.); (H.Y.); (A.M.); (T.Y.); (T.A.); (M.M.); (K.T.); (S.Y.); (K.K.); (S.Y.); (H.T.); (T.T.)
- Inflammatory Bowel Disease Center, Kurume University Hospital, 67 Asahi-Machi, Kurume 830-0011, Japan
| | - Sayo Yamasaki
- Department of Medicine, Division of Gastroenterology, School of Medicine, Kurume University, 67 Asahi-Machi, Kurume 830-0011, Japan; (T.M.); (H.Y.); (A.M.); (T.Y.); (T.A.); (M.M.); (K.T.); (S.Y.); (K.K.); (S.Y.); (H.T.); (T.T.)
| | - Kotaro Kuwaki
- Department of Medicine, Division of Gastroenterology, School of Medicine, Kurume University, 67 Asahi-Machi, Kurume 830-0011, Japan; (T.M.); (H.Y.); (A.M.); (T.Y.); (T.A.); (M.M.); (K.T.); (S.Y.); (K.K.); (S.Y.); (H.T.); (T.T.)
- Inflammatory Bowel Disease Center, Kurume University Hospital, 67 Asahi-Machi, Kurume 830-0011, Japan
| | - Shinichiro Yoshioka
- Department of Medicine, Division of Gastroenterology, School of Medicine, Kurume University, 67 Asahi-Machi, Kurume 830-0011, Japan; (T.M.); (H.Y.); (A.M.); (T.Y.); (T.A.); (M.M.); (K.T.); (S.Y.); (K.K.); (S.Y.); (H.T.); (T.T.)
- Inflammatory Bowel Disease Center, Kurume University Hospital, 67 Asahi-Machi, Kurume 830-0011, Japan
| | - Hidetoshi Takedatsu
- Department of Medicine, Division of Gastroenterology, School of Medicine, Kurume University, 67 Asahi-Machi, Kurume 830-0011, Japan; (T.M.); (H.Y.); (A.M.); (T.Y.); (T.A.); (M.M.); (K.T.); (S.Y.); (K.K.); (S.Y.); (H.T.); (T.T.)
- Inflammatory Bowel Disease Center, Kurume University Hospital, 67 Asahi-Machi, Kurume 830-0011, Japan
| | - Takuji Torimura
- Department of Medicine, Division of Gastroenterology, School of Medicine, Kurume University, 67 Asahi-Machi, Kurume 830-0011, Japan; (T.M.); (H.Y.); (A.M.); (T.Y.); (T.A.); (M.M.); (K.T.); (S.Y.); (K.K.); (S.Y.); (H.T.); (T.T.)
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16
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Shindo Y, Mitsuyama K, Yamasaki H, Imai T, Yoshioka S, Kuwaki K, Yamauchi R, Yoshimura T, Araki T, Morita M, Tsuruta K, Yamasaki S, Fukami K, Torimura T. Safety and efficacy of single-needle leukocyte apheresis for treatment of ulcerative colitis. Ther Apher Dial 2020; 24:503-510. [PMID: 32526089 DOI: 10.1111/1744-9987.13539] [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] [Indexed: 11/29/2022]
Abstract
Leukocyte apheresis (LCAP) is a safe and effective treatment for active ulcerative colitis (UC) in Japan. Nevertheless, a limitation of LCAP is its requirement for two puncture sites (double-needle [DN] apheresis), sometimes leading to problems with needle puncture. Single-needle (SN) apheresis is useful in hemodialysis and reduces needle puncture pain. If SN apheresis were found to be useful in LCAP for UC, it may reduce patient burden. The aim of this study was to compare the safety and efficacy of SN apheresis with that of DN apheresis. Twenty-four patients with active UC were retrospectively enrolled. They underwent either SN apheresis (n = 12) or conventional double-needle (DN) apheresis (n = 12) at the Kurume University Hospital from February 2014 to March 2018. At each session, we recorded access problems defined by the time required to initiate apheresis and the frequency of puncture-related problems, as well as blood circuit clotting, defined as clotting necessitating interruption of apheresis and changing of the circuit. Efficacy was assessed using partial Mayo scores. The number of apheresis sessions was comparable between SN and DN apheresis (9.0 ± 2.0 times vs 9.6 ± 1.4 times, mean ± SEM). SN significantly reduced the time required to start apheresis (10.0 ± 5.4 minutes vs 19.4 ± 11.9 minutes, P < .05) as well as needle puncture troubles (0.9% vs 11.5%, P < .05). SN had comparable frequency of blood clotting episodes (5.6% vs 8.7%). SN apheresis had similar clinical efficacy (P < .001 in SN and P < .01 in DN). The improvement and remission rates were comparable between groups. SN apheresis may be safe and effective and may reduce patient burden during UC treatment. Nevertheless, further comparative studies are needed.
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Affiliation(s)
- Yoichiro Shindo
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Keiichi Mitsuyama
- Inflammatory Bowel Disease Center, Kurume University School of Medicine, Kurume, Japan
| | - Hiroshi Yamasaki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan.,Inflammatory Bowel Disease Center, Kurume University School of Medicine, Kurume, Japan.,Hakuai Hospital, Kurume, Japan
| | - Tetsuro Imai
- Clinical Engineering Center, Kurume University Hospital, Kurume, Japan
| | - Shinichiro Yoshioka
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan.,Inflammatory Bowel Disease Center, Kurume University School of Medicine, Kurume, Japan
| | - Kotaro Kuwaki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan.,Inflammatory Bowel Disease Center, Kurume University School of Medicine, Kurume, Japan
| | - Ryosuke Yamauchi
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan.,Inflammatory Bowel Disease Center, Kurume University School of Medicine, Kurume, Japan
| | - Tetsuhiro Yoshimura
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan.,Inflammatory Bowel Disease Center, Kurume University School of Medicine, Kurume, Japan
| | - Toshihiro Araki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan.,Inflammatory Bowel Disease Center, Kurume University School of Medicine, Kurume, Japan
| | - Masaru Morita
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan.,Inflammatory Bowel Disease Center, Kurume University School of Medicine, Kurume, Japan
| | - Kozo Tsuruta
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan.,Inflammatory Bowel Disease Center, Kurume University School of Medicine, Kurume, Japan
| | - Sayo Yamasaki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Kei Fukami
- Division of Nephrology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Takuji Torimura
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
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17
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Kondo M, Melzer M, Karnaushenko D, Uemura T, Yoshimoto S, Akiyama M, Noda Y, Araki T, Schmidt OG, Sekitani T. Imperceptible magnetic sensor matrix system integrated with organic driver and amplifier circuits. Sci Adv 2020; 6:eaay6094. [PMID: 32010789 PMCID: PMC6976294 DOI: 10.1126/sciadv.aay6094] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 11/25/2019] [Indexed: 05/02/2023]
Abstract
Artificial electronic skins (e-skins) comprise an integrated matrix of flexible devices arranged on a soft, reconfigurable surface. These sensors must perceive physical interaction spaces between external objects and robots or humans. Among various types of sensors, flexible magnetic sensors and the matrix configuration are preferable for such position sensing. However, sensor matrices must efficiently map the magnetic field with real-time encoding of the positions and motions of magnetic objects. This paper reports an ultrathin magnetic sensor matrix system comprising a 2 × 4 array of magnetoresistance sensors, a bootstrap organic shift register driving the sensor matrix, and organic signal amplifiers integrated within a single imperceptible platform. The system demonstrates high magnetic sensitivity owing to the use of organic amplifiers. Moreover, the shift register enabled real-time mapping of 2D magnetic field distribution.
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Affiliation(s)
- M. Kondo
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan
- Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- National Institute of Advanced Industrial Science and Technology (AIST)–Osaka University Advanced Photonics and Biosensing Open Innovation Laboratory (PhotoBIO-OIL), 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - M. Melzer
- Institute for Integrative Nanosciences, Leibniz Institute for Solid State and Materials Research Dresden (IFW Dresden), Helmholtzstraße 20, D-01069 Dresden, Germany
| | - D. Karnaushenko
- Institute for Integrative Nanosciences, Leibniz Institute for Solid State and Materials Research Dresden (IFW Dresden), Helmholtzstraße 20, D-01069 Dresden, Germany
| | - T. Uemura
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan
- National Institute of Advanced Industrial Science and Technology (AIST)–Osaka University Advanced Photonics and Biosensing Open Innovation Laboratory (PhotoBIO-OIL), 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - S. Yoshimoto
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan
| | - M. Akiyama
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan
| | - Y. Noda
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan
| | - T. Araki
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan
- Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- National Institute of Advanced Industrial Science and Technology (AIST)–Osaka University Advanced Photonics and Biosensing Open Innovation Laboratory (PhotoBIO-OIL), 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - O. G. Schmidt
- Institute for Integrative Nanosciences, Leibniz Institute for Solid State and Materials Research Dresden (IFW Dresden), Helmholtzstraße 20, D-01069 Dresden, Germany
- Material Systems for Nanoelectronics, Chemnitz University of Technology, Reichenhainer Str. 70, D-09107 Chemnitz, Germany
- Research Center for Materials, Architectures and Integration of Nanomembranes (MAIN), Chemnitz University of Technology, Rosenbergstr. 6, D-09126 Chemnitz, Germany
- Corresponding author. (O.G.S.); (T.S.)
| | - T. Sekitani
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan
- Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- National Institute of Advanced Industrial Science and Technology (AIST)–Osaka University Advanced Photonics and Biosensing Open Innovation Laboratory (PhotoBIO-OIL), 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Corresponding author. (O.G.S.); (T.S.)
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18
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Yasumoto M, Araki T, Okabe Y, Niizeki T, Shirono T, Ishida Y, Ushijima T, Sakaue T, Tsuruta O, Torimura T. [A case of hemobilia due to the rupture of pancreaticoduodenal artery aneurysm with choledocholithiasis]. Nihon Shokakibyo Gakkai Zasshi 2020; 117:92-98. [PMID: 31941863 DOI: 10.11405/nisshoshi.117.92] [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: 06/10/2023]
Abstract
A 79-year-old male patient had a huge choledocholithiasis that was difficult to remove and underwent endoscopic retrograde biliary drainage. He complained of hematemesis upon admission to our hospital. Endoscopic retrograde cholangiography showed bleeding from the papilla of Vater and revealed an upper filling defect with a large stone in the common bile duct. Furthermore, computed tomography detected an aneurysm close to the stone. Considering the occurrence of a ruptured pancreaticoduodenal artery aneurysm, we diagnosed this condition as hemobilia. Through angiography, we also detected a saccular aneurysm in the posterior superior pancreaticoduodenal artery (PSPDA);subsequently, selective transcatheter arterial embolization (TAE) was performed. However, bleeding persisted after TAE;therefore, we performed second-time embolization for other PSPDA branches. Consequently, hemostasis was achieved. To date, bleeding has not reoccurred. The pancreaticoduodenal artery constitutes a complex arcade;hence, cases of extremely difficult hemostasis by embolization have been reported. Herein, we have presented a life-saving case of choledocholithiasis treated with TAE for biliary bleeding from a PSPDA aneurysm rupture.
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Affiliation(s)
- Makiko Yasumoto
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Toshihiro Araki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Yoshinobu Okabe
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Takashi Niizeki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Tomotake Shirono
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Yusuke Ishida
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Tomoyuki Ushijima
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Takahiko Sakaue
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Osamu Tsuruta
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Takuji Torimura
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
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19
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Bonneville S, Delpomdor F, Préat A, Chevalier C, Araki T, Kazemian M, Steele A, Schreiber A, Wirth R, Benning LG. Molecular identification of fungi microfossils in a Neoproterozoic shale rock. Sci Adv 2020; 6:eaax7599. [PMID: 32010783 PMCID: PMC6976295 DOI: 10.1126/sciadv.aax7599] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 11/20/2019] [Indexed: 05/26/2023]
Abstract
Precambrian fossils of fungi are sparse, and the knowledge of their early evolution and the role they played in the colonization of land surface are limited. Here, we report the discovery of fungi fossils in a 810 to 715 million year old dolomitic shale from the Mbuji-Mayi Supergroup, Democratic Republic of Congo. Syngenetically preserved in a transitional, subaerially exposed paleoenvironment, these carbonaceous filaments of ~5 μm in width exhibit low-frequency septation (pseudosepta) and high-angle branching that can form dense interconnected mycelium-like structures. Using an array of microscopic (SEM, TEM, and confocal laser scanning fluorescence microscopy) and spectroscopic techniques (Raman, FTIR, and XANES), we demonstrated the presence of vestigial chitin in these fossil filaments and document the eukaryotic nature of their precursor. Based on those combined evidences, these fossil filaments and mycelium-like structures are identified as remnants of fungal networks and represent the oldest, molecularly identified remains of Fungi.
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Affiliation(s)
- S. Bonneville
- Biogéochimie et Modélisation du Système Terre, Département Géosciences, Environnement et Société, Université Libre de Bruxelles, 50 Av. F. D. Roosevelt, 1050 Brussels, Belgium
| | - F. Delpomdor
- Illinois State Geological Survey, University of Illinois at Urbana-Champaign, 615 E. Peabody Dr., Champaign, IL 61820, USA
| | - A. Préat
- Biogéochimie et Modélisation du Système Terre, Département Géosciences, Environnement et Société, Université Libre de Bruxelles, 50 Av. F. D. Roosevelt, 1050 Brussels, Belgium
| | - C. Chevalier
- Center for Microscopy and Molecular Imaging, Université Libre de Bruxelles, 12 rue des professeurs Jeener et Brachet, Charleroi 6041, Belgium
| | - T. Araki
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK
| | - M. Kazemian
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK
| | - A. Steele
- Geophysical Laboratory, Carnegie Institution of Washington, 1530 P St NW, Washington, DC 20005, USA
| | - A. Schreiber
- German Research Centre for Geosciences, GFZ, Telegrafenberg, 14473 Potsdam, Germany
| | - R. Wirth
- German Research Centre for Geosciences, GFZ, Telegrafenberg, 14473 Potsdam, Germany
| | - L. G. Benning
- German Research Centre for Geosciences, GFZ, Telegrafenberg, 14473 Potsdam, Germany
- Department of Earth Sciences, Free University of Berlin, 12249 Berlin, Germany
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20
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Yamasaki H, Kinugasa T, Iwasaki S, Yoshioka S, Mizuochi T, Ishibashi M, Nagatsuka K, Yamauchi R, Ishibashi N, Araki T, Mori A, Akagi Y, Mitsuyama K, Torimura T. Questionnaire Survey from the 1st Kurume University Inflammatory Bowel Disease Center Educational Lecture. Kurume Med J 2019; 65:109-112. [PMID: 31406041 DOI: 10.2739/kurumemedj.ms653004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
INTRODUCTION The number of inflammatory bowel disease (IBD) patients is increasing steadily in Japan, and it is expected that patient groups and patient education will improve the quality of life of patients and IBD care. The 1st Kurume University IBD Center educational lecture was held and a questionnaire survey was administered at this lecture. METHODS We asked 78 participants to answer a questionnaire survey on the occasion of the 1st Kurume University IBD Center educational lecture. RESULTS We obtained responses from 56 (71.8%) participants; 31 (55.4%) had IBD [21 (37.4%) had ulcerative colitis (UC) and 10 (17.9%) had Crohn's disease (CD)]. Most participants were female (37, 66%). The age range with the highest number of participants was 40 to 69 (27, 48.2%). Most had heard about this educational lecture through "notification by the patient's doctor" 23 (41.1%). A total of 30 (53.6%) of participants answered "good" about the lecture content, while 50 (89.7%) of participants answered "very good" and "good" about the impression of this lecture. Meanwhile, 10 (32.3%) of patients were interested in patient groups. The percentage of patients who were interested in patient groups was higher in patients with CD 4 (66.7%) than those with UC 2 (33.3%). CONCLUSION We held the 1st Kurume University IBD center educational lecture. Further studies are needed to assess whether educational lectures and/or patient groups can improve patients' quality of life (QOL) and IBD care in our hospital.
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Affiliation(s)
- Hiroshi Yamasaki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine.,Inflammatory Bowel Disease Center, Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine.,Hakuai Hospital
| | | | | | - Shinichiro Yoshioka
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine.,Inflammatory Bowel Disease Center, Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Tatsuki Mizuochi
- Department of Pediatrics and Child Health, Kurume University School of Medicine
| | | | | | - Ryosuke Yamauchi
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine.,Inflammatory Bowel Disease Center, Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | | | - Toshihiro Araki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Atushi Mori
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine.,Inflammatory Bowel Disease Center, Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Yoshito Akagi
- Department of Surgery, Kurume University School of Medicine
| | - Keiichi Mitsuyama
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine.,Inflammatory Bowel Disease Center, Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Takuji Torimura
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
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21
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Araki T, Arinaga-Hino T, Koga H, Akiba J, Ide T, Okabe Y, Kuwahara R, Amano K, Yasumoto M, Kawaguchi T, Sano T, Kondou R, Kurata S, Mitsuyama K, Torimura T. Marked accumulation of fluorodeoxyglucose and inflammatory cells expressing glucose transporter-3 in immunoglobulin G4-related autoimmune hepatitis. Hepatol Res 2018; 48:937-944. [PMID: 29737040 DOI: 10.1111/hepr.13188] [Citation(s) in RCA: 5] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 04/23/2018] [Accepted: 04/28/2018] [Indexed: 02/08/2023]
Abstract
Immunoglobulin (Ig)G4-related autoimmune hepatitis (AIH) is a recently proposed subtype that responds well to steroid treatment; however, its pathogenesis remains unclear. We report here a 65-year-old Japanese woman with skin itching and lip swelling. She had liver injury with jaundice, which persisted despite stopping anti-allergic agents. Blood chemistry revealed highly elevated serum IgG and IgG4 (535 mg/dL) levels, and positive anti-nuclear antibody. The diagnosis of AIH was based on liver biopsy. Notably, the IgG4+ /IgG+ cell ratio was 85%. On fluorodeoxyglucose (FDG) positron emission tomography/computed tomography, robust signal intensity was found in the liver, and in enlarged lymph nodes and salivary glands with confirmed IgG4+ cell infiltration. Immunofluorescence analysis of the liver biopsy specimen indicated clear expression of glucose transporter-3 (Glut-3) in IgG4+ inflammatory cells infiltrating into the portal area. This is the first report of simultaneous strong accumulation of FDG and Glut-3 expression in IgG4-related AIH, which might aid in elucidating the pathogenesis of this disease.
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Affiliation(s)
- Toshihiro Araki
- Division of Gastroenterology, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Teruko Arinaga-Hino
- Division of Gastroenterology, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Hironori Koga
- Division of Gastroenterology, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan.,Division of Gastroenterology and Translational Medicine, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Jun Akiba
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - Tatsuya Ide
- Division of Gastroenterology, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Yoshinobu Okabe
- Division of Gastroenterology, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Reiichiro Kuwahara
- Division of Gastroenterology, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Keisuke Amano
- Division of Gastroenterology, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Makiko Yasumoto
- Division of Gastroenterology, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Toshihiro Kawaguchi
- Division of Gastroenterology, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Tomoya Sano
- Division of Gastroenterology, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Reiichiro Kondou
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - Seiji Kurata
- Department of Radiology, Kurume University School of Medicine, Kurume, Japan
| | - Keiichi Mitsuyama
- Division of Gastroenterology, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Takuji Torimura
- Division of Gastroenterology, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
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22
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Yamauchi R, Araki T, Mitsuyama K, Tokito T, Ishii H, Yoshioka S, Kuwaki K, Mori A, Yoshimura T, Tsuruta O, Torimura T. The characteristics of nivolumab-induced colitis: an evaluation of three cases and a literature review. BMC Gastroenterol 2018; 18:135. [PMID: 30170560 PMCID: PMC6119262 DOI: 10.1186/s12876-018-0864-1] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 08/23/2018] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The use of immune-checkpoint inhibitors in cancer treatment has become increasingly common, resulting in an increase in the incidence of related side effects. Diarrhoea and colitis have been previously documented as gastrointestinal tract-related side effects of immune-checkpoint inhibitors. Although PD-1/PD-L1 inhibitors produce fewer side effects than CTLA-4 inhibitors, diarrhoea and colitis continue to be reported. However, little is known about the endoscopic features associated with PD-1/PD-L1 inhibitors. In this report, we describe three cases of colitis induced by a PD-1 inhibitor nivolumab. These cases showed endoscopic findings characteristic of ulcerative colitis (UC). Treatment was in accordance with UC therapy, which resulted in beneficial outcomes. CASE PRESENTATION Three patients with lung cancer treated with nivolumab presented with diarrhoea with (case 2) or without haematochezia (cases 1 and 3). Treatment with nivolumab was ceased and colonoscopy was performed, revealing endoscopic features similar to those of UC. These patients were diagnosed with nivolumab-induced colitis. Case 1 was treated with mesalazine, whereas cases 2 and 3 were treated with corticosteroids. Subsequently, their symptoms improved. CONCLUSIONS Nivolumab-induced colitis exhibited similar characteristics to UC. Treatment was similar to that for UC and was successful.
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Affiliation(s)
- Ryosuke Yamauchi
- 0000 0001 0706 0776grid.410781.bDivision of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011 Japan
- 0000 0001 0706 0776grid.410781.bInflammatory Bowel Disease Center, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011 Japan
| | - Toshihiro Araki
- 0000 0001 0706 0776grid.410781.bDivision of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011 Japan
- 0000 0001 0706 0776grid.410781.bInflammatory Bowel Disease Center, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011 Japan
| | - Keiichi Mitsuyama
- 0000 0001 0706 0776grid.410781.bDivision of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011 Japan
- 0000 0001 0706 0776grid.410781.bInflammatory Bowel Disease Center, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011 Japan
| | - Takaaki Tokito
- 0000 0001 0706 0776grid.410781.bDivision of Respirology, Neurology, and Rheumatology, Department of Internal Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011 Japan
| | - Hidenobu Ishii
- 0000 0001 0706 0776grid.410781.bDivision of Respirology, Neurology, and Rheumatology, Department of Internal Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011 Japan
| | - Shinichiro Yoshioka
- 0000 0001 0706 0776grid.410781.bDivision of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011 Japan
- 0000 0001 0706 0776grid.410781.bInflammatory Bowel Disease Center, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011 Japan
| | - Kotaro Kuwaki
- 0000 0001 0706 0776grid.410781.bDivision of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011 Japan
- 0000 0001 0706 0776grid.410781.bInflammatory Bowel Disease Center, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011 Japan
| | - Atsushi Mori
- 0000 0001 0706 0776grid.410781.bDivision of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011 Japan
- 0000 0001 0706 0776grid.410781.bInflammatory Bowel Disease Center, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011 Japan
| | - Tetsuhiro Yoshimura
- 0000 0001 0706 0776grid.410781.bDivision of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011 Japan
- 0000 0001 0706 0776grid.410781.bInflammatory Bowel Disease Center, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011 Japan
| | - Osamu Tsuruta
- 0000 0001 0706 0776grid.410781.bDivision of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011 Japan
| | - Takuji Torimura
- 0000 0001 0706 0776grid.410781.bDivision of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011 Japan
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23
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Sultani G, Bentley N, Osborne B, Joshi S, Araki T, Montgomery M, Polly P, Byrne F, Wu L, Turner N. PO-011 Impact of compartment-specific changes in NAD biosynthesis on diethylnitrosamine-induced liver cancer. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.56] [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: 11/04/2022] Open
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24
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Ortiz-Medina J, Inukai S, Araki T, Morelos-Gomez A, Cruz-Silva R, Takeuchi K, Noguchi T, Kawaguchi T, Terrones M, Endo M. Robust water desalination membranes against degradation using high loads of carbon nanotubes. Sci Rep 2018; 8:2748. [PMID: 29426871 PMCID: PMC5807517 DOI: 10.1038/s41598-018-21192-5] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [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: 05/31/2017] [Accepted: 01/31/2018] [Indexed: 11/09/2022] Open
Abstract
Chlorine resistant reverse osmosis (RO) membranes were fabricated using a multi-walled carbon nanotube-polyamide (MWCNT-PA) nanocomposite. The separation performance of these membranes after chlorine exposure (4800 ppm·h) remained unchanged (99.9%) but was drastically reduced to 82% in the absence of MWCNT. It was observed that the surface roughness of the membranes changed significantly by adding MWCNT. Moreover, membranes containing MWCNT fractions above 12.5 wt.% clearly improved degradation resistance against chlorine exposure, with an increase in water flux while maintaining salt rejection performance. Molecular dynamics and quantum chemical calculations were performed in order to understand the high chemical stability of the MWCNT-PA nanocomposite membranes, and revealed that high activation energies are required for the chlorination of PA. The results presented here confirm the unique potential of carbon nanomaterials embedded in polymeric composite membranes for efficient RO water desalination technologies.
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Affiliation(s)
- J Ortiz-Medina
- Global Aqua Innovation Center, Shinshu University, Nagano, 380-8553, Japan.
| | - S Inukai
- Global Aqua Innovation Center, Shinshu University, Nagano, 380-8553, Japan
| | - T Araki
- Global Aqua Innovation Center, Shinshu University, Nagano, 380-8553, Japan.,Division of Computational Science and Technology, Research Organization for Information Science and Technology, Tokyo, 140-0001, Japan
| | - A Morelos-Gomez
- Global Aqua Innovation Center, Shinshu University, Nagano, 380-8553, Japan
| | - R Cruz-Silva
- Global Aqua Innovation Center, Shinshu University, Nagano, 380-8553, Japan.,Institute of Carbon Science and Technology, Faculty of Engineering, Shinshu University, Nagano, 380-8553, Japan
| | - K Takeuchi
- Global Aqua Innovation Center, Shinshu University, Nagano, 380-8553, Japan.,Institute of Carbon Science and Technology, Faculty of Engineering, Shinshu University, Nagano, 380-8553, Japan
| | - T Noguchi
- Institute of Carbon Science and Technology, Faculty of Engineering, Shinshu University, Nagano, 380-8553, Japan
| | - T Kawaguchi
- Institute of Carbon Science and Technology, Faculty of Engineering, Shinshu University, Nagano, 380-8553, Japan
| | - M Terrones
- Institute of Carbon Science and Technology, Faculty of Engineering, Shinshu University, Nagano, 380-8553, Japan.,Department of Physics, Department of Chemistry, Department of Materials Science and Engineering & Center for 2-Dimensional and Layered Materials, The Pennsylvania State University, University Park, PA, 16802, U.S.A
| | - M Endo
- Global Aqua Innovation Center, Shinshu University, Nagano, 380-8553, Japan. .,Institute of Carbon Science and Technology, Faculty of Engineering, Shinshu University, Nagano, 380-8553, Japan.
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25
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Onishi K, Enomoto J, Araki T, Takagi R, Suzuki H, Fukuda J. Electrochemical microdevices for rapid and on-site determination of the minimum inhibitory concentration of antibiotics. Analyst 2018; 143:396-399. [DOI: 10.1039/c7an01873h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A tool for rapid selection of appropriate antibiotics may be useful to maximize the benefits of their effectiveness against severe infectious diseases.
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Affiliation(s)
- K. Onishi
- Faculty of Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
| | - J. Enomoto
- Faculty of Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
| | - T. Araki
- Faculty of Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
| | - R. Takagi
- Graduate School of Pure and Applied Sciences
- University of Tsukuba
- Tsukuba
- Japan
| | - H. Suzuki
- Graduate School of Pure and Applied Sciences
- University of Tsukuba
- Tsukuba
- Japan
| | - J. Fukuda
- Faculty of Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
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26
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Shimamatsu K, Naito Y, Mihara Y, Nakayama M, Tanigawa M, Abe Y, Nakamura K, Araki T, Sakata K, Noguchi K, Akiba J, Yano H, Nakashima O. Granulocyte-colony stimulating factor producing mucinous cystic neoplasm with an associated invasive carcinoma of the pancreas. Oncol Lett 2017; 15:2387-2392. [PMID: 29434948 DOI: 10.3892/ol.2017.7572] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Accepted: 10/26/2017] [Indexed: 02/04/2023] Open
Abstract
The present case study documents an autopsy case of granulocyte-colony stimulating factor (G-CSF)-producing mucinous cystic neoplasm (MCN), with an associated invasive carcinoma of the pancreas. A 65-year-old woman presented to Omuta City Hospital (Omuta Japan) with a primary complaint of abdominal pain. Multiple liver nodules and a pancreatic cyst were detected upon abdominal computed tomography. Initially, liver abscess was suspected as the patient exhibited leukocytosis and elevated C-reactive protein level. However, the serum concentration of G-CSF was 98.8 pg/ml (normal, <39.0 pg/ml). At 6 weeks after admission, the patient succumbed to liver failure. At autopsy, a cystic lesion was identified in the pancreatic tail that contained bloody necrotic fluid. Microscopically, the cystic lesion was composed of columnar and mucin-producing epithelium associated with ovarian-type subepithelial stroma. The stroma exhibited positive immunostaining for vimentin, estrogen receptor and progesterone receptor. Calcification on the cystic wall was observed. The tumor invaded the pancreatic parenchyma and metastasized to the liver and lungs. The lesion was diagnosed as invasive adenocarcinoma arising in MCN. By contrast, liver nodules predominantly consisted of pleomorphic cancer cells with small foci of adenocarcinoma. Pancreatic and hepatic cancer cells were confirmed to be positive for G-CSF staining. The present case report indicates that G-CSF-producing MCNs may be associated with an aggressive clinical course, particularly when anaplastic changes are observed.
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Affiliation(s)
- Kazuhide Shimamatsu
- Department of Pathology, Omuta City Hospital, Omuta, Fukuoka 836-8567, Japan
| | - Yoshiki Naito
- Department of Diagnostic Pathology, Kurume University Hospital, Kurume, Fukuoka 830-0011, Japan
| | - Yutaro Mihara
- Department of Pathology, Kurume University School of Medicine, Kurume, Fukuoka 830-0011, Japan
| | - Masamichi Nakayama
- Department of Pathology, Kurume University School of Medicine, Kurume, Fukuoka 830-0011, Japan
| | - Masahiko Tanigawa
- Department of Pathology, Kurume University School of Medicine, Kurume, Fukuoka 830-0011, Japan
| | - Yushi Abe
- Department of Pathology, Kurume University School of Medicine, Kurume, Fukuoka 830-0011, Japan
| | - Ken Nakamura
- Department of Pathology, Kurume University School of Medicine, Kurume, Fukuoka 830-0011, Japan
| | - Toshihiro Araki
- Department of Medicine, Omuta City Hospital, Omuta, Fukuoka 836-8567, Japan
| | - Kenji Sakata
- Department of Medicine, Omuta City Hospital, Omuta, Fukuoka 836-8567, Japan
| | - Kazunori Noguchi
- Department of Medicine, Omuta City Hospital, Omuta, Fukuoka 836-8567, Japan
| | - Jun Akiba
- Department of Diagnostic Pathology, Kurume University Hospital, Kurume, Fukuoka 830-0011, Japan
| | - Hirohisa Yano
- Department of Pathology, Kurume University School of Medicine, Kurume, Fukuoka 830-0011, Japan
| | - Osamu Nakashima
- Department of Clinical Laboratory, Kurume University Hospital, Kurume, Fukuoka 830-0011, Japan
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27
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Nagano S, Ueyama M, Nagai Y, Mochizuki H, Araki T. Identification of target mRNA transported to axons by TDP-43. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1595] [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: 11/28/2022]
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28
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Yoshimoto S, Araki T, Uemura T, Nezu T, Kondo M, Sasai K, Iwase M, Satake H, Yoshida A, Kikuchi M, Sekitani T. Wireless EEG patch sensor on forehead using on-demand stretchable electrode sheet and electrode-tissue impedance scanner. Annu Int Conf IEEE Eng Med Biol Soc 2017; 2016:6286-6289. [PMID: 28269686 DOI: 10.1109/embc.2016.7592165] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A wireless electroencephalogram (EEG) sensor using a stretchable electrode sheet and electrode-tissue impedance measurement module is presented herein. The sensor can be attached to the forehead using biocompatible gel with the electrode sheet. The sensor is compactly designed for 3 cm × 9 cm × 6 mm with weight of 12 g. Impedance scanning circuit is also proposed to evaluate the skin surface condition before EEG measurements. We developed the impedance scanning board for 3 cm × 5 cm × 3 mm, with weight of 5.6 g. Results show that the proposed system demonstrates a promising performance in diagnosing the Alzheimer's disease using frequency domain analysis.
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29
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Hiragi T, Andoh M, Araki T, Shirakawa T, Ono T, Koyama R, Ikegaya Y. Differentiation of Human Induced Pluripotent Stem Cell (hiPSC)-Derived Neurons in Mouse Hippocampal Slice Cultures. Front Cell Neurosci 2017; 11:143. [PMID: 28567004 PMCID: PMC5434115 DOI: 10.3389/fncel.2017.00143] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [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: 02/10/2017] [Accepted: 04/29/2017] [Indexed: 01/15/2023] Open
Abstract
Potential clinical applications of neurons derived from human induced pluripotent stem cells (hiPSC-neurons) for drug screening and transplantation therapies have received considerable attention. However, it remains unclear whether and how transplanted hiPSC-neurons are incorporated into pre-existing neural circuits. Here we developed a co-culture system of hiPSC-neurons and mouse hippocampal slices to examine the differentiation of hiPSC-neurons in pre-existing neural circuits. hiPSC-neurons transplanted in mouse hippocampal slices expressed the hippocampal neuron-specific markers HuB and Prox1 after 7 days of culture, while those markers were scarcely expressed in hiPSC-neurons cultured on glass dishes. Furthermore, hiPSC-neurons transplanted in the dentate gyrus (DG) of slice cultures grew to exhibit dentate granule cell-like morphologies, including besom-shaped dendrites. Similarly, hiPSC-neurons transplanted in the CA1 region of slice cultures grew to exhibit CA1 pyramidal cell-like morphologies, including primary apical and multiple basal dendrites with synaptic spines. Additionally, these cells projected axons toward the entorhinal cortex (EC) as observed in vivo. These data suggest that hiPSC-neurons were anatomically integrated into pre-existing neural circuits in a region-specific manner. Thus, the co-culture system will be useful for the study of efficient strategies to differentiate transplanted hiPSC-neurons.
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Affiliation(s)
- Toshimitsu Hiragi
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, University of TokyoTokyo, Japan
| | - Megumi Andoh
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, University of TokyoTokyo, Japan
| | - Toshihiro Araki
- Advanced Drug Research Laboratories, Mitsubishi Tanabe Pharma CorporationYokohama, Japan
| | - Takayuki Shirakawa
- Advanced Drug Research Laboratories, Mitsubishi Tanabe Pharma CorporationYokohama, Japan
| | - Takashi Ono
- Advanced Drug Research Laboratories, Mitsubishi Tanabe Pharma CorporationYokohama, Japan
| | - Ryuta Koyama
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, University of TokyoTokyo, Japan
| | - Yuji Ikegaya
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, University of TokyoTokyo, Japan
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30
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Yamashita T, Miyamoto Y, Bando Y, Ono T, Kobayashi S, Doi A, Araki T, Kato Y, Shirakawa T, Suzuki Y, Yamauchi J, Yoshida S, Sato N. Differentiation of oligodendrocyte progenitor cells from dissociated monolayer and feeder-free cultured pluripotent stem cells. PLoS One 2017; 12:e0171947. [PMID: 28192470 PMCID: PMC5305255 DOI: 10.1371/journal.pone.0171947] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 01/27/2017] [Indexed: 01/11/2023] Open
Abstract
Oligodendrocytes myelinate axons and form myelin sheaths in the central nervous system. The development of therapies for demyelinating diseases, including multiple sclerosis and leukodystrophies, is a challenge because the pathogenic mechanisms of disease remain poorly understood. Primate pluripotent stem cell-derived oligodendrocytes are expected to help elucidate the molecular pathogenesis of these diseases. Oligodendrocytes have been successfully differentiated from human pluripotent stem cells. However, it is challenging to prepare large amounts of oligodendrocytes over a short amount of time because of manipulation difficulties under conventional primate pluripotent stem cell culture methods. We developed a proprietary dissociated monolayer and feeder-free culture system to handle pluripotent stem cell cultures. Because the dissociated monolayer and feeder-free culture system improves the quality and growth of primate pluripotent stem cells, these cells could potentially be differentiated into any desired functional cells and consistently cultured in large-scale conditions. In the current study, oligodendrocyte progenitor cells and mature oligodendrocytes were generated within three months from monkey embryonic stem cells. The embryonic stem cell-derived oligodendrocytes exhibited in vitro myelinogenic potency with rat dorsal root ganglion neurons. Additionally, the transplanted oligodendrocyte progenitor cells differentiated into myelin basic protein-positive mature oligodendrocytes in the mouse corpus callosum. This preparative method was used for human induced pluripotent stem cells, which were also successfully differentiated into oligodendrocyte progenitor cells and mature oligodendrocytes that were capable of myelinating rat dorsal root ganglion neurons. Moreover, it was possible to freeze, thaw, and successfully re-culture the differentiating cells. These results showed that embryonic stem cells and human induced pluripotent stem cells maintained in a dissociated monolayer and feeder-free culture system have the potential to generate oligodendrocyte progenitor cells and mature oligodendrocytes in vitro and in vivo. This culture method could be applied to prepare large amounts of oligodendrocyte progenitor cells and mature oligodendrocytes in a relatively short amount of time.
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Affiliation(s)
- Tomoko Yamashita
- Discovery Research Laboratories, Research Division, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
- * E-mail:
| | - Yuki Miyamoto
- Department of Pharmacology, National Research Institute for Child Health and Development, Setagaya, Tokyo, Japan
| | - Yoshio Bando
- Department of Functional Anatomy and Neuroscience, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
| | - Takashi Ono
- Discovery Research Laboratories, Research Division, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
| | - Sakurako Kobayashi
- Discovery Research Laboratories, Research Division, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
| | - Ayano Doi
- Discovery Research Laboratories, Research Division, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
| | - Toshihiro Araki
- Discovery Research Laboratories, Research Division, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
| | - Yosuke Kato
- Discovery Research Laboratories, Research Division, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
| | - Takayuki Shirakawa
- Discovery Research Laboratories, Research Division, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
| | - Yutaka Suzuki
- Discovery Research Laboratories, Research Division, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
| | - Junji Yamauchi
- Department of Pharmacology, National Research Institute for Child Health and Development, Setagaya, Tokyo, Japan
| | - Shigetaka Yoshida
- Department of Functional Anatomy and Neuroscience, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
| | - Naoya Sato
- Discovery Research Laboratories, Research Division, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
- MP Healthcare Venture Management, Boston, Massachusetts, United States of America
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31
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Sugimine S, Saito S, Araki T, Yamamoto K, Obata H. Endogenous analgesic effect of pregabalin: A double-blind and randomized controlled trial. Eur J Pain 2017; 21:997-1006. [PMID: 28169487 DOI: 10.1002/ejp.1007] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/29/2016] [Indexed: 01/01/2023]
Abstract
BACKGROUND Conditioned pain modulation (CPM) is widely used to measure endogenous analgesia, and a recent study indicated that drugs that act on endogenous analgesia are more effective in individuals with lower CPM. Recent animal studies have indicated that pregabalin activates endogenous analgesia by stimulating the descending pain inhibitory system. The present study examined whether the analgesic effect of pregabalin is greater in individuals with lower original endogenous analgesia using CPM. METHODS Fifty-nine healthy subjects were randomly assigned to either a pregabalin group or a placebo group, and 50 of them completed the study. CPM was measured before and after pregabalin or placebo administration. The correlation of initial CPM to change in CPM was compared between the pregabalin and placebo groups. RESULTS Initial CPM was significantly correlated with the change in CPM in the pregabalin group (r = -0.73, p < 0.0001) but not in the placebo group (p = 0.56) (difference in correlation coefficients between groups; p = 0.004). Furthermore, the initial CPM significantly affected the change in CPM in the pregabalin group but not in the placebo group (pregabalin group: adj R2 = 0.51, p < 0.001, y = -0.54x + 2.98; placebo group: p = 0.56, significant difference in regression slopes; p = 0.015). These results indicate that pregabalin has a higher endogenous analgesic effect in individuals with lower original endogenous analgesia. SIGNIFICANCE The analgesic effect of pregabalin depends on the original endogenous analgesia status. Its effect on conditioned pain modulation (CPM) was stronger for subjects with lower original endogenous analgesia, suggesting that the mechanism of pregabalin involves the improvement of endogenous analgesia.
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Affiliation(s)
- S Sugimine
- Department of Anesthesiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - S Saito
- Department of Anesthesiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - T Araki
- Department of Clinical Pharmacology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - K Yamamoto
- Department of Clinical Pharmacology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - H Obata
- Center for Pain Management, Fukushima Medical University Hospital, Fukushima-city, Japan.,Department of Anesthesiology, Fukushima Medical University, Fukushima-city, Japan
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32
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Kanehara A, Ando S, Araki T, Usami S, Kuwabara H, Kano Y, Kasai K. Trends in psychological distress and alcoholism after The Great East Japan Earthquake of 2011. SSM Popul Health 2016; 2:807-812. [PMID: 29349191 PMCID: PMC5757822 DOI: 10.1016/j.ssmph.2016.10.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 07/19/2016] [Revised: 10/17/2016] [Accepted: 10/20/2016] [Indexed: 12/04/2022] Open
Abstract
AIMS Many studies have shown that natural disasters affect mental health; however, longitudinal data on post-disaster mental health problems are scarce. The aims of our study were to investigate the trend in psychological distress and alcoholism after The Great East Japan Earthquake and tsunami in north eastern Japan, in March 2011. METHODS A longitudinal study was conducted using annual health check data for the general population, in the city of Higashi-Matsushima, which was affected by the high impact of tsunami. In 2012 and 2013, the Kessler Psychological Distress Scale and the CAGE questionnaire (for screening for alcoholism) were used to assess psychological distress and prevalence of alcoholism. RESULTS Of 11,855 total eligible residents, 2192 received the annual check in 2012 and 2013. The prevalence of mental illness and the mean score of alcoholism tendency increased during the follow-up period. The majority of respondents (43.8%) with baseline serious mental illness (SMI) continued to have SMI at follow-up; only 16.7% reported recovering. Older age, female sex, and severity of home damage predicted higher psychological distress, while male sex was a risk factor for alcoholism at follow-up. CONCLUSIONS Psychological distress deteriorated 2 years after the huge natural disaster, compared with 1 year after the disaster. Long-term mental health care is needed for those affected by natural disasters, particularly those who have suffered loss.
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Affiliation(s)
- A. Kanehara
- Department of Neuropsychiatry, The University of Tokyo, Tokyo, Japan
| | - S. Ando
- Department of Psychiatry and Behavioural Sciences, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo 156-8506, Japan
| | - T. Araki
- Department of Youth Mental Health, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - S. Usami
- Department of Psychology, University of Tsukuba, Tsukuba, Japan
| | - H. Kuwabara
- Disability Services Office, The University of Tokyo, Tokyo, Japan
| | - Y. Kano
- Department of Child Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - K. Kasai
- Department of Neuropsychiatry, The University of Tokyo, Tokyo, Japan
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Matsuda Y, Miura J, Shimizu M, Aoki T, Kubo M, Fukushima S, Hashimoto M, Takeshige F, Araki T. Influence of Nonenzymatic Glycation in Dentinal Collagen on Dental Caries. J Dent Res 2016; 95:1528-1534. [PMID: 27523626 DOI: 10.1177/0022034516662246] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Advanced glycation end-products (AGEs) are generated via nonenzymatic glycation of dentinal collagen, resulting in accumulation of AGEs in dentin tissue. Since accumulated AGEs cause crosslinking between amino acid polypeptides in the collagen molecule and modify mechanical properties of dentinal collagen, the authors assumed that there would be a significant interaction between the generation of AGEs and progression of caries in dentin. To confirm such an interaction, spectroscopic imaging analyses (i.e., nanosecond fluorescence lifetime imaging and second harmonic generation light imaging) were performed in addition to biochemical and electron microscopic analyses in the present study. Seven carious human teeth were fixed in paraformaldehyde and cut longitudinally into 1-mm sections using a low-speed diamond saw for the following analyses. In transmission electron microscopy (TEM) analysis, nondecalcified specimens were embedded in epoxy resin and sliced into thin sections for observation. For the immunohistochemical analysis, the specimens were paraffin embedded after decalcification for 2 wk and sectioned with a microtome. Resultant sections were stained with anti-AGE and anticollagen antibodies. The demineralized specimens were used for spectroscopic analyses without additional treatment. For Western blotting analysis, specimens were separated into carious and sound dentin. Each specimen was homogenized with a bead crusher and an ultrasonic homogenizer and then treated with hydrochloric acid. In carious dentin, the collagen fibers showed an amorphous structure in the TEM image, and the AGEs were localized in the areas of bacterial invasion in the immunostaining image. The total amount of AGEs in carious dentin was higher than in sound dentin in Western blotting. The ultrastructure of type I collagen and total amount of AGEs varied markedly in the dentinal caries region. The fluorescence lifetime was shorter in the carious area than that in the sound areas, indicating an increase of AGEs in the carious area. The increase of AGEs could influence the progression of dentinal caries.
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Affiliation(s)
- Y Matsuda
- Division for Interdisciplinary Dentistry, Graduate School of Dentistry, Osaka University, Suita, Japan
| | - J Miura
- Division for Interdisciplinary Dentistry, Graduate School of Dentistry, Osaka University, Suita, Japan
| | - M Shimizu
- Division for Interdisciplinary Dentistry, Graduate School of Dentistry, Osaka University, Suita, Japan
| | - T Aoki
- Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University, Toyonaka, Japan
| | - M Kubo
- Division for Interdisciplinary Dentistry, Graduate School of Dentistry, Osaka University, Suita, Japan
| | - S Fukushima
- Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University, Toyonaka, Japan
| | - M Hashimoto
- Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University, Toyonaka, Japan
| | - F Takeshige
- Division for Interdisciplinary Dentistry, Graduate School of Dentistry, Osaka University, Suita, Japan
| | - T Araki
- Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University, Toyonaka, Japan
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Abe K, Kawagoe J, Araki T, Aoki M, Kogure K. Differential expression of heat shock protein 70 gene between the cortex and caudate after transient focal cerebral ischaemia in rats. Neurol Res 2016; 14:381-5. [PMID: 1362251 DOI: 10.1080/01616412.1992.11740089] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [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: 10/21/2022]
Abstract
In relation to changes of total protein synthesis, induction of 70-kDa heat shock protein (HSP70) mRNA was examined by Northern blot and in situ hybridization after 30 min of transient middle cerebral artery (MCA) occlusion of rats. HSP70 mRNA was not present in the control condition of brain. With reperfusion, the mRNA was greatly induced along with the recovery of total protein synthesis in the cerebral cortex and lateral caudate of the ipsilateral hemisphere. However, the level of the mRNA reached a maximum earlier in the lateral caudate (at 3 h) than in the cortex (at 8 h), and the maximum amount of the mRNA was much smaller in the caudate than in the cortex. Total protein synthesis in the lateral caudate did not completely recover until 7 days. Histological examination showed a severe damage in cells of lateral caudate, while cells in the cortex were almost normal at 7 days. No difference in the brain temperature was observed between the two regions. These results show that the induction of HSP70 mRNA correlates with the recovery of protein synthesis in brain cells after a transient ischaemia, and that the HSP70 gene expression is different at the transcriptional level between the cortical and caudate cells after the transient ischaemia.
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Affiliation(s)
- K Abe
- Department of Neurology, Tohoku University School of Medicine, Sendai, Japan
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Ohgi S, Tanaka K, Araki T, Ito K, Hara H, Mori T. Quantitative Evaluation of Calf Muscle Pump Function after Deep Vein Thrombosis by Non-Invasive Venous Tests. Phlebology 2016. [DOI: 10.1177/026835559000500111] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In order to quantitatively evaluate calf muscle pump function following deep vein thrombosis (DVT), expelled volume was investigated by strain gauge plethysmography (SPG). Thirty-six patients with 43 diseased lower limbs and nine healthy persons with 16 control limbs were studied. Of 43 diseased limbs, 20 symptomatic limbs were distinguished from 23 asymptomatic limbs by the presence of heaviness or aching. The following ***noninvasive parameters for the quantitative evaluation of calf muscle pump function, venous refilling time (VRT), venous outflow (VO), venous return (VR), and expelled volume (EV) were measured by SPG or photoplethysmography (DPG). Ambulatory venous pressure (AVP) was taken to represent the standard for calf muscle pump function. Using SPG, the EV, VR, and VRTs distinguished three groups (control, asymptomatic and symptomatic). Among seven indicators (EV, VR, VO, VRTs), EV had the highest correlation coefficient with the AVP ( r = +0.728). A positive EV was present in 85% of the symptomatic limbs, but in only 4% of the asymptomatic limbs. It is concluded that the EV is a useful non-invasive indicator for the quantitative evaluation of calf muscle pump function after deep vein thrombosis.
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Affiliation(s)
- S. Ohgi
- Second Department of Surgery, Tottori University School of Medicine, Yonago, Japan
| | - K. Tanaka
- Second Department of Surgery, Tottori University School of Medicine, Yonago, Japan
| | - T. Araki
- Second Department of Surgery, Tottori University School of Medicine, Yonago, Japan
| | - K. Ito
- Second Department of Surgery, Tottori University School of Medicine, Yonago, Japan
| | - H. Hara
- Second Department of Surgery, Tottori University School of Medicine, Yonago, Japan
| | - T. Mori
- Second Department of Surgery, Tottori University School of Medicine, Yonago, Japan
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Khandelwal A, Sholl LM, Araki T, Ramaiya NH, Hatabu H, Nishino M. Patterns of metastasis and recurrence in thymic epithelial tumours: longitudinal imaging review in correlation with histological subtypes. Clin Radiol 2016; 71:1010-1017. [PMID: 27267746 DOI: 10.1016/j.crad.2016.05.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 04/26/2016] [Accepted: 05/09/2016] [Indexed: 02/05/2023]
Abstract
AIM To determine the patterns of metastasis and recurrence in thymic epithelial tumours based on longitudinal imaging studies, and to correlate the patterns with World Health Organization (WHO) histological classifications. MATERIALS AND METHODS Seventy-seven patients with histopathologically confirmed thymomas (n=62) and thymic carcinomas (n=15) who were followed with cross-sectional follow-up imaging after surgery were retrospectively studied. All cross-sectional imaging studies during the disease course were reviewed to identify metastasis or recurrence. The sites of involvement and the time of involvement measured from surgery were recorded. RESULTS Metastasis or recurrence was noted in 24 (31%) of the 77 patients. Patients with metastasis or recurrence were significantly younger than those without (median age: 46 versus 60, respectively; p=0.0005), and more commonly had thymic carcinomas than thymomas (p=0.002). The most common site of involvement was the pleura (17/24), followed by the lung (9/24), and thoracic nodes (9/24). Abdominopelvic involvement was noted in 12 patients, most frequently in the liver (n=8). Lung metastasis was more common in thymic carcinomas than thymomas (p=0.0005). Time from surgery to the development of metastasis or recurrence was shortest in thymic carcinoma, followed by high-risk thymomas, and was longest in low-risk thymoma (median time in months: 25.1, 68.8, and not reached, respectively; p=0.0015). CONCLUSIONS The patterns of metastasis and recurrence of thymic epithelial tumours differ significantly across histological subgroups, with thymic carcinomas more commonly having metastasis with shorter length of time after surgery. The knowledge of different patterns of tumour spread may contribute to further understanding of the biological and clinical behaviours of these tumours.
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Affiliation(s)
- A Khandelwal
- Department of Radiology, Brigham and Women's Hospital and Dana-Farber Cancer Institute, 450 Brookline Ave., Boston, MA 02215, USA
| | - L M Sholl
- Department of Pathology, Brigham and Women's Hospital and Dana-Farber Cancer Institute, 450 Brookline Ave., Boston, MA 02215, USA
| | - T Araki
- Department of Radiology, Brigham and Women's Hospital and Dana-Farber Cancer Institute, 450 Brookline Ave., Boston, MA 02215, USA
| | - N H Ramaiya
- Department of Radiology, Brigham and Women's Hospital and Dana-Farber Cancer Institute, 450 Brookline Ave., Boston, MA 02215, USA
| | - H Hatabu
- Department of Radiology, Brigham and Women's Hospital and Dana-Farber Cancer Institute, 450 Brookline Ave., Boston, MA 02215, USA
| | - M Nishino
- Department of Radiology, Brigham and Women's Hospital and Dana-Farber Cancer Institute, 450 Brookline Ave., Boston, MA 02215, USA.
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Fukushima S, Furukawa T, Niioka H, Ichimiya M, Sannomiya T, Tanaka N, Onoshima D, Yukawa H, Baba Y, Ashida M, Miyake J, Araki T, Hashimoto M. Correlative near-infrared light and cathodoluminescence microscopy using Y2O3:Ln, Yb (Ln = Tm, Er) nanophosphors for multiscale, multicolour bioimaging. Sci Rep 2016; 6:25950. [PMID: 27185264 PMCID: PMC4869039 DOI: 10.1038/srep25950] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 04/20/2016] [Indexed: 12/15/2022] Open
Abstract
This paper presents a new correlative bioimaging technique using Y2O3:Tm, Yb and Y2O3:Er, Yb nanophosphors (NPs) as imaging probes that emit luminescence excited by both near-infrared (NIR) light and an electron beam. Under 980 nm NIR light irradiation, the Y2O3:Tm, Yb and Y2O3:Er, Yb NPs emitted NIR luminescence (NIRL) around 810 nm and 1530 nm, respectively, and cathodoluminescence at 455 nm and 660 nm under excitation of accelerated electrons, respectively. Multimodalities of the NPs were confirmed in correlative NIRL/CL imaging and their locations were visualized at the same observation area in both NIRL and CL images. Using CL microscopy, the NPs were visualized at the single-particle level and with multicolour. Multiscale NIRL/CL bioimaging was demonstrated through in vivo and in vitro NIRL deep-tissue observations, cellular NIRL imaging, and high-spatial resolution CL imaging of the NPs inside cells. The location of a cell sheet transplanted onto the back muscle fascia of a hairy rat was visualized through NIRL imaging of the Y2O3:Er, Yb NPs. Accurate positions of cells through the thickness (1.5 mm) of a tissue phantom were detected by NIRL from the Y2O3:Tm, Yb NPs. Further, locations of the two types of NPs inside cells were observed using CL microscopy.
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Affiliation(s)
- S Fukushima
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
| | - T Furukawa
- Institute for NanoScience Design, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
| | - H Niioka
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
| | - M Ichimiya
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan.,School of Engineering, The University of Shiga Prefecture, 2500 Hassaka-cho, Hikone, Shiga 522-8533, Japan
| | - T Sannomiya
- Department of Innovative and Engineered Materials, Tokyo Institute of Technology, 4259 Nagatsuta, Yokohama, Kanagawa 226-8503, Japan
| | - N Tanaka
- Quantitative Biology Center (QBiC), RIKEN, 1-3 Yamadaoka, Suita, Osaka 565-0874, Japan
| | - D Onoshima
- Institute of Innovation for Future Society, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.,ImPACT Research Center for Advanced Nanobiodevices, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - H Yukawa
- ImPACT Research Center for Advanced Nanobiodevices, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.,Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Y Baba
- Institute of Innovation for Future Society, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.,ImPACT Research Center for Advanced Nanobiodevices, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.,Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.,Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 2217-14, Hayashi-cho, Taka matsu 761-0395, Japan
| | - M Ashida
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
| | - J Miyake
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
| | - T Araki
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
| | - M Hashimoto
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
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Sakurai Y, Mori Y, Okamoto H, Nishimura A, Komura E, Araki T, Shiramoto M. Acid-inhibitory effects of vonoprazan 20 mg compared with esomeprazole 20 mg or rabeprazole 10 mg in healthy adult male subjects--a randomised open-label cross-over study. Aliment Pharmacol Ther 2015; 42:719-30. [PMID: 26193978 DOI: 10.1111/apt.13325] [Citation(s) in RCA: 219] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 02/12/2015] [Accepted: 06/29/2015] [Indexed: 12/13/2022]
Abstract
BACKGROUND Proton pump inhibitors (PPIs) are widely used for the treatment of acid-related diseases. Vonoprazan is a member of a new class of acid suppressants; potassium-competitive acid blockers. Vonoprazan may thus be an alternative to PPIs. AIM To evaluate efficacy, rapidity and duration of acid-inhibitory effects of vonoprazan vs. two control PPIs, esomeprazole and rabeprazole, in 20 healthy Japanese adult male volunteers with CYP2C19 extensive metaboliser genotype. METHODS In this randomised, open-label, two-period cross-over study, vonoprazan 20 mg and esomeprazole 20 mg (Study V vs. E) or rabeprazole 10 mg (Study V vs. R) were orally administered daily for 7 days. Primary pharmacodynamic endpoint was gastric pH over 24 h measured as percentage of time pH ≥3, ≥4 and ≥5 (pH holding time ratios; HTRs) and mean gastric pH. RESULTS Acid-inhibitory effect (pH4 HTR) of vonoprazan was significantly greater than that of esomeprazole or rabeprazole on both Days 1 and 7; Day 7 difference in pH4 HTR for vonoprazan vs. esomeprazole was 24.6% [95% confidence interval (CI): 16.2-33.1] and for vonoprazan vs. rabeprazole 28.8% [95% CI: 17.2-40.4]. The Day 1 to Day 7 ratio of 24-h pH4 HTRs was >0.8 for vonoprazan, compared with 0.370 for esomeprazole and 0.393 for rabeprazole. Vonoprazan was generally well tolerated. One vonoprazan subject withdrew due to a rash which resolved after discontinuation. CONCLUSIONS This study demonstrated a more rapid and sustained acid-inhibitory effect of vonoprazan 20 mg vs. esomeprazole 20 mg or rabeprazole 10 mg. Therefore, vonoprazan may be a potentially new treatment for acid-related diseases.
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Affiliation(s)
- Y Sakurai
- Takeda Pharmaceutical Company Ltd., Osaka, Japan
| | - Y Mori
- Takeda Pharmaceutical Company Ltd., Osaka, Japan
| | - H Okamoto
- Takeda Pharmaceutical Company Ltd., Osaka, Japan
| | - A Nishimura
- Takeda Pharmaceutical Company Ltd., Osaka, Japan
| | - E Komura
- Takeda Pharmaceutical Company Ltd., Osaka, Japan
| | - T Araki
- Takeda Pharmaceutical Company Ltd., Osaka, Japan
| | - M Shiramoto
- Medical Co. LTA Hakata Clinic, Fukuoka, Japan
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Kawano M, Araki T, Yamamoto K. The difference of Vkor activity and its inhibition by warfarin between Vitamin K1 Epoxide and Vitamin K2 Epoxide. Clin Ther 2015. [DOI: 10.1016/j.clinthera.2015.05.270] [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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Nagano S, Takahashi Y, Yamamoto K, Masutani H, Fujiwara N, Urushitani M, Araki T. A cysteine residue affects the conformational state and neuronal toxicity of mutant SOD1 in mice: relevance to the pathogenesis of ALS. Hum Mol Genet 2015; 24:3427-39. [DOI: 10.1093/hmg/ddv093] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 03/09/2015] [Indexed: 12/11/2022] Open
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Ikeda N, Araki T, Dey N, Bose S, Shafique S, El-Baz A, Cuadrado Godia E, Anzidei M, Saba L, Suri JS. Automated and accurate carotid bulb detection, its verification and validation in low quality frozen frames and motion video. INT ANGIOL 2014; 33:573-589. [PMID: 24658129] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM Carotid intima-media thickness (cIMT) measurements during clinical trials need to have a fixed reference point (also called as bulb edge points) in the anatomy from which the cIMT can be measured. Identification of the bulb edge points in carotid ultrasound images faces the challenge to be detected automatically due to low image quality and variations in ultrasound images, motion artefacts, image acquisition protocols, position of the patient, and orientation of the linear probe with respect to bulb and ultrasound gain controls during acquisition. METHODS This paper presents a patented comprehensive methodology for carotid bulb localization and bulb edge detection as a reference point. The method consists of estimating the lumen-intima borders accurately using classification paradigm. Transition points are located automatically based on curvature characteristics. Further we verify and validate the locations of bulb edge points using combination of several local image processing methods such as (i) lumen-intima shapes, (ii) bulb slopes, (iii) bulb curvature, (iv) mean lumen thickness and its variations, and (v) geometric shape fitting. RESULTS Our database consists of 155 ultrasound bulb images taken from various ultrasound machines with varying resolutions and imaging conditions. Further we run our automated system blindly to spot out the bulbs in a mixture database of 336 images consisting of bulbs and no-bulbs. We are able to detect the bulbs in the bulb database with 100% accuracy having 92% as close as to a neurologists's bulb location. Our mean lumen-intima error is 0.0133 mm with precision against the manual tracings to be 98.92%. Our bulb detection system is fast and takes on an average 9 seconds per image for detection for the bulb edge points and 4 seconds for verification/validation of the bulb edge points.
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Affiliation(s)
- N Ikeda
- Division of Cardiovascular Medicine, National Center for Global Health and Medicine (NCGM), Tokyo, Japan -
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Niioka H, Fukushima S, Ichimiya M, Ashida M, Miyake J, Araki T, Hashimoto M. Correlative cathodoluminescence and near-infrared fluorescence imaging for bridging from nanometer to millimeter scale bioimaging. Microscopy (Oxf) 2014; 63 Suppl 1:i29. [PMID: 25359828 DOI: 10.1093/jmicro/dfu073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Correlative light and electron microscopy (CLEM) is one attractive method of observing biological specimens because it combines the advantages of both light microscopy (LM) and electron microscopy (EM). In LM, specimens are fully hydrated, and molecular species are distinguished based on the fluorescence colors of probes. EM provides both high-spatial-resolution images superior to those obtained with LM and ultrastructural information of cellular components. The combination of LM and EM gives much more information than either method alone, which helps us to analyze cellular function in more detail.We propose a Y2O3:Tm,Yb phosphor nanoparticle which allows upconversion luminescence (UCL) imaging with near-infrared (NIR) light excitation and cathodoluminescence (CL) imaging [1], where the light emission induced by an electron beam is called cathodoluminescence (CL). Due to electron beam excitation, the spatial resolution of CL microscopy is on the order of nanometers [2,3]. Upconversion is a process in which lower energy, longer wavelength excitation light is transduced to higher energy, shorter wavelength emission light. So far, in LM observation for CLEM, ultraviolet (UV) or visible light has been used for excitation. However, UV and visible light have limited ability to observe deep tissue regions due to absorption, scattering, and autofluorescence. On the other hand, NIR light does not suffer from these problems. Rare-earth-doped upconversion nanophosphors have been applied to biological imaging because of the advantages of NIR excitation [4].We investigated the UCL and CL spectra of Y2O3:Tm,Yb nanophosphors. Y2O3:Tm,Yb nanophosphors that emit visible and near-infrared UCL under 980nm irradiation and blue CL via electron beam excitation. To confirm bimodality of our nanophosphors, correlative UCL/CL images of the nanophosphors were obtained for the same region. The nanophosphors were poured onto a P doped Si substrate (Fig. 1(a)) and were irradiated with 980 nm NIR CW laser light or an electron beam. Fig. 1(b) shows the UCL image of the nanophosphors under 980 nm NIR CW laser irradiation, UCL spots were observed, but the individual nanophosphors in each spot were difficult to distinguish in the UCL image. On the other hand, the edges and the gap between the nanophosphors were clearly distinguished in the CL image (Fig. 1(c)), showing that the spatial-resolution of CL imaging was enough higher than that of UCL image. We believe that upconversion phosphors of the type described here will allow the realization of new CLEM imaging techniques covering the nanometer to millimeter scale, i.e., the molecular to in vivo scale.jmicro;63/suppl_1/i29/DFU073F1F1DFU073F1Fig. 1.(a) SEM and correlative (b) UCL (intensity of 980 nm NIR CW laser 8 mW) and (c) CL images of Y2O3:Tm,Yb nanophosphors in same region (accelerating voltage 3 kV, exposure time 100 ms/pixel).
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Affiliation(s)
- H Niioka
- Graduate School of Engineering Science, Osaka University
| | - S Fukushima
- Graduate School of Engineering Science, Osaka University
| | - M Ichimiya
- School of Engineering, The University of Shiga Prefecture, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan 2500 Hassaka, Hikone, Shiga 522-8533, Japan
| | - M Ashida
- Graduate School of Engineering Science, Osaka University
| | - J Miyake
- Graduate School of Engineering Science, Osaka University
| | - T Araki
- Graduate School of Engineering Science, Osaka University
| | - M Hashimoto
- Graduate School of Engineering Science, Osaka University
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Nakamura M, Tobita K, Gulden W, Watanabe K, Someya Y, Tanigawa H, Sakamoto Y, Araki T, Matsumiya H, Ishii K, Utoh H, Takase H, Hayashi T, Satou A, Yonomoto T, Federici G, Okano K. Study of safety features and accident scenarios in a fusion DEMO reactor. Fusion Engineering and Design 2014. [DOI: 10.1016/j.fusengdes.2014.04.062] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Araki T, Hamaguchi T, Takashima A, Honma Y, Iwasa S, Okita N, Kato K, Yamada Y, Hashimoto H, Taniguchi H, Kushima R, Nakao K, Shimada Y. Amrubicin Monotherapy in Patients with Platinum-Refractory Metastatic Neuroendocrine Carcinoma and Mixed Adenoneuroendocrine Carcinoma of the Gastrointestinal Tract. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu345.21] [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: 11/12/2022] Open
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Araki T, Ikeda N, Molinari F, Dey N, Acharjee S, Saba L, Suri JS. Link between automated coronary calcium volumes from intravascular ultrasound to automated carotid IMT from B-mode ultrasound in coronary artery disease population. INT ANGIOL 2014; 33:392-403. [PMID: 25056172] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM Establishing relationship between coronary calcium volumes from Intravascular Ultrasound (IVUS) and automated carotid intima-media thickness (cIMT) helps in understanding the genetic nature of atherosclerosis disease. In this research, we have quantified the detected calcium from IVUS video frames and associated a relationship between coronary calcium volumes computed and automated cIMT from B-mode ultrasound. METHODS Coronary calcium volume is computed from IVUS and auto cIMTs are computed using B-mode ultrasound. An automated computer based application is developed and tested on 100 patient volumes (an average of 2549 frames per volume) to calculate lesion area and normalized coronary calcium volume. We use an integrated approach for volume computation which is based on lesion area per frame. We have measured the normalized volume from the calcium detected video frames using proposed integration method. The cIMT of 100 carotids were measured with novel and dedicated automated software analysis (AtheroEdge™ from AtheroPoint™ LLC, Roseville, CA, USA). RESULTS The computer-based coronary calcium volume (from IVUS) showed a correlation coefficient with respect to cIMT for left and right carotids as 9.1% and 13.9%, respectively. CONCLUSION Coronary calcium volume computed from IVUS and auto cIMT are moderately correlated. The association between auto cIMT (right side) vs. computer-based coronary calcium volume (IVUS) is stronger than the association between auto cIMT (left side) vs. computer-based coronary calcium volume.
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Affiliation(s)
- T Araki
- Division of Cardiovascular Medicine, Toho University Ohashi Medical Center, Ohashi Meguro-ku, Tokyo, Japan -
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Araki T, Hirata M, Yanagisawa T, Sugata H, Onishi M, Omura K, Honda C, Hayakawa K, Yorifuji S. P509: Genetic influence is still maintaining on cerebral language function in elderly monozygotic twin: a MEG study. Clin Neurophysiol 2014. [DOI: 10.1016/s1388-2457(14)50607-4] [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: 10/25/2022]
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Tanaka K, Shimura T, Kitajima T, Kondo S, Ide S, Okugawa Y, Saigusa S, Toiyama Y, Inoue Y, Araki T, Uchida K, Mohri Y, Kusunoki M. Tropomyosin-related receptor kinase B at the invasive front and tumour cell dedifferentiation in gastric cancer. Br J Cancer 2014; 110:2923-34. [PMID: 24853179 PMCID: PMC4056051 DOI: 10.1038/bjc.2014.228] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [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: 01/10/2014] [Revised: 02/21/2014] [Accepted: 04/08/2014] [Indexed: 12/19/2022] Open
Abstract
Background: Tropomyosin-related receptor kinase B (TrkB) promotes proliferation and invasion, relating to poor prognosis of various malignancies. We examined the role of TrkB at the invasive front of gastric cancer (GC) and its association with tumour cell dedifferentiation and tumour budding. Methods: Immunoreactive TrkB was evaluated at the tumour centre and margin using whole-tissue sections of 320 GC patients. Tumour cell dedifferentiation was defined as higher histologic grade at the tumour margin than the surface or tumour centre. Tumour budding was also scored on cytokeratin-stained sections. Results: Sixty-five patients (20%) showed higher TrkB expression at the invasive front (TrkB expression was higher at the tumour margin than tumour centre). It was significantly associated with several aggressive phenotypes in the full cohort (n=320). It showed a prognostic significance in test subgroup (n=98) and was identified as an independent prognostic factor (HR=2.09; 95% CI: 1.26–3.53) by multivariate analysis in validation subgroup (n=222). Twenty-one patients showed tumour cell dedifferentiation. In predominantly differentiated tumour, higher TrkB at the invasive front was significantly associated with tumour budding rather than tumour cell dedifferentiation. Conclusions: Assessment of immunoreactive TrkB at the invasive front by whole-tissue sections provides prognostic information for GC patients.
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Affiliation(s)
- K Tanaka
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - T Shimura
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - T Kitajima
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - S Kondo
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - S Ide
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - Y Okugawa
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - S Saigusa
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - Y Toiyama
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - Y Inoue
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - T Araki
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - K Uchida
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - Y Mohri
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - M Kusunoki
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
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Araki T, Sholl LM, Gerbaudo VH, Hatabu H, Nishino M. Intrathymic cyst: clinical and radiological features in surgically resected cases. Clin Radiol 2014; 69:732-8. [PMID: 24824976 DOI: 10.1016/j.crad.2014.03.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 02/27/2014] [Accepted: 03/03/2014] [Indexed: 02/01/2023]
Abstract
AIM To investigate radiological and clinical characteristics of pathologically proven cases of intrathymic cysts. MATERIALS AND METHODS The study population consisted of 18 patients (five males, 13 females; median age 56 years) with pathologically confirmed intrathymic cysts who underwent thymectomy and had preoperative chest computed tomography (CT) available for review. The patient demographics, clinical presentation, and preoperative radiological diagnoses were reviewed. CT images were evaluated for shape, contour, location of the cysts and the presence of adjacent thymic tissue, mass effect, calcifications, and septa. The size and CT attenuations of the cysts were measured. RESULTS The most common CT features of intrathymic cysts included oval shape (9/18; 50%), smooth contour (12/18; 67%), midline location (11/18; 61%), the absence of visible adjacent thymic tissue (12/18; 67%), and the absence of calcification (16/18; 89%). The mean longest diameter and the longest perpendicular diameter were 25 mm (range 17-49 mm) and 19 mm (range 10-44 mm), respectively. The mean CT attenuation was 38 HU (range 6-62 HU) on contrast-enhanced CT, and was 45 HU (range 26-64 HU) on unenhanced CT (p = 0.41). The CT attenuation was >20 HU in 15 of 18 patients (83%). Preoperative radiological diagnosis included thymoma in 11 patients. CONCLUSION In surgically removed, pathologically proven cases of intrathymic cyst, the CT attenuation was >20 HU in most cases, leading to the preoperative diagnosis of thymoma. Awareness of the spectrum of imaging findings of the entity is essential to improve the diagnostic accuracy and patient management.
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Affiliation(s)
- T Araki
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, 75 Francis St., Boston, MA, USA
| | - L M Sholl
- Department of Pathology, Brigham and Women's Hospital, 75 Francis St., Boston, MA, USA
| | - V H Gerbaudo
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, 75 Francis St., Boston, MA, USA
| | - H Hatabu
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, 75 Francis St., Boston, MA, USA
| | - M Nishino
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, 75 Francis St., Boston, MA, USA; Department of Imaging, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA.
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Ono T, Suzuki Y, Kato Y, Fujita R, Araki T, Yamashita T, Kato H, Torii R, Sato N. A single-cell and feeder-free culture system for monkey embryonic stem cells. PLoS One 2014; 9:e88346. [PMID: 24505480 PMCID: PMC3915054 DOI: 10.1371/journal.pone.0088346] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Accepted: 01/11/2014] [Indexed: 12/20/2022] Open
Abstract
Primate pluripotent stem cells (PSCs), including embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs), hold great potential for research and application in regenerative medicine and drug discovery. To maximize primate PSC potential, a practical system is required for generating desired functional cells and reproducible differentiation techniques. Much progress regarding their culture systems has been reported to date; however, better methods would still be required for their practical use, particularly in industrial and clinical fields. Here we report a new single-cell and feeder-free culture system for primate PSCs, the key feature of which is an originally formulated serum-free medium containing FGF and activin. In this culture system, cynomolgus monkey ESCs can be passaged many times by single-cell dissociation with traditional trypsin treatment and can be propagated with a high proliferation rate as a monolayer without any feeder cells; further, typical PSC properties and genomic stability can be retained. In addition, it has been demonstrated that monkey ESCs maintained in the culture system can be used for various experiments such as in vitro differentiation and gene manipulation. Thus, compared with the conventional culture system, monkey ESCs grown in the aforementioned culture system can serve as a cell source with the following practical advantages: simple, stable, and easy cell maintenance; gene manipulation; cryopreservation; and desired differentiation. We propose that this culture system can serve as a reliable platform to prepare primate PSCs useful for future research and application.
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Affiliation(s)
- Takashi Ono
- Discovery Molecular Pharmacology Department, Discovery Screening Center, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
- * E-mail:
| | - Yutaka Suzuki
- Discovery Molecular Pharmacology Department, Discovery Screening Center, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
| | - Yosuke Kato
- Discovery Molecular Pharmacology Department, Discovery Screening Center, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
| | - Risako Fujita
- Discovery Molecular Pharmacology Department, Discovery Screening Center, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
| | - Toshihiro Araki
- Discovery Molecular Pharmacology Department, Discovery Screening Center, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
| | - Tomoko Yamashita
- Discovery Molecular Pharmacology Department, Discovery Screening Center, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
| | - Hidemasa Kato
- Division of Developmental Biology, Research Center for Genomic Medicine, Saitama Medical University, Hidaka, Saitama, Japan
| | - Ryuzo Torii
- Research Center for Animal Life Science, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Naoya Sato
- Discovery Molecular Pharmacology Department, Discovery Screening Center, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
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