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Hatano R, Itoh T, Otsuka H, Saeki H, Yamamoto A, Song D, Shirakawa Y, Iyama S, Sato T, Iwao N, Harada N, Aune TM, Dang NH, Kaneko Y, Yamada T, Morimoto C, Ohnuma K. Humanized anti-IL-26 monoclonal antibody as a novel targeted therapy for chronic graft-versus-host disease. Am J Transplant 2022; 22:2804-2820. [PMID: 35997569 DOI: 10.1111/ajt.17178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 07/12/2022] [Accepted: 08/17/2022] [Indexed: 01/25/2023]
Abstract
IL-26 is a Th17 cytokine, with its gene being absent in rodents. To characterize the in vivo immunological effects of IL-26 in chronic systemic inflammation, we used human IL26 transgenic (hIL-26Tg) mice and human umbilical cord blood mononuclear cells (hCBMC) in mouse allogeneic-graft-versus-host disease (GVHD) and chronic xenogeneic-GVHD model, respectively. Transfer of bone marrow and spleen T cells from hIL-26Tg mice into B10.BR mice resulted in GVHD progression, with clinical signs of tissue damage in multiple organs. IL-26 markedly increased neutrophil levels both in the GVHD-target tissues and peripheral blood. Expression levels of Th17 cytokines in hIL-26Tg mice-derived donor CD4 T cells were significantly increased, whereas IL-26 did not affect cytotoxic function of donor CD8 T cells. In addition, granulocyte-colony stimulating factor, IL-1β, and IL-6 levels were particularly enhanced in hIL-26Tg mice. We also developed a humanized neutralizing anti-IL-26 monoclonal antibody (mAb) for therapeutic use, and its administration after onset of chronic xenogeneic-GVHD mitigated weight loss and prolonged survival, with preservation of graft-versus-leukemia effect. Taken together, our data elucidate the in vivo immunological effects of IL-26 in chronic GVHD models and suggest that a humanized anti-IL-26 mAb may be a potential therapeutic agent for the treatment of chronic GVHD.
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Komiya E, Tominaga M, Hatano R, Kamikubo Y, Toyama S, Sakairi H, Honda K, Itoh T, Kamata Y, Tsurumachi M, Kishi R, Ohnuma K, Sakurai T, Morimoto C, Takamori K. Peripheral endomorphins drive mechanical alloknesis under the enzymatic control of CD26/DPPIV. J Allergy Clin Immunol 2021; 149:1085-1096. [PMID: 34411589 DOI: 10.1016/j.jaci.2021.08.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 06/29/2021] [Accepted: 08/02/2021] [Indexed: 11/18/2022]
Abstract
BACKGROUND Mechanical alloknesis (or innocuous mechanical stimuli-evoked itch) often occurs in dry skin-based disorders such as atopic dermatitis and psoriasis. However, the molecular and cellular mechanisms underlying mechanical alloknesis remain unclear. We recently reported the involvement of CD26 in the regulation of psoriatic itch. This molecule exhibits dipeptidyl peptidase IV (DPPIV) enzyme activity and exerts its biologic effects by processing various substances, including neuropeptides. OBJECTIVE The aim of the present study was to investigate the peripheral mechanisms of mechanical alloknesis by using CD26/DPPIV knockout (CD26KO) mice. METHODS We applied innocuous mechanical stimuli to CD26KO or wild-type mice. The total number of scratching responses was counted as the alloknesis score. Immunohistochemical and behavioral pharmacologic analyses were then performed to examine the physiologic activities of CD26/DPPIV or endomorphins (EMs), endogenous agonists of μ-opioid receptors. RESULTS Mechanical alloknesis was more frequent in CD26KO mice than in wild-type mice. The alloknesis score in CD26KO mice was significantly reduced by the intradermal administration of recombinant DPPIV or naloxone methiodide, a peripheral μ-opioid receptor antagonist, but not by that of mutant DPPIV without enzyme activity. EMs (EM-1 and EM-2), selective ligands for μ-opioid receptors, are substrates for DPPIV. Immunohistochemically, EMs were located in keratinocytes, fibroblasts, and peripheral sensory nerves. Behavioral analyses revealed that EMs preferentially provoked mechanical alloknesis over chemical itch. DPPIV-digested forms of EMs did not induce mechanical alloknesis. CONCLUSION The present results suggest that EMs induce mechanical alloknesis at the periphery under the enzymatic control of CD26/DPPIV.
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Itoh T, Hatano R, Horimoto Y, Yamada T, Song D, Otsuka H, Shirakawa Y, Mastuoka S, Iwao N, Aune TM, Dang NH, Kaneko Y, Okumura K, Morimoto C, Ohnuma K. IL-26 mediates epidermal growth factor receptor-tyrosine kinase inhibitor resistance through endoplasmic reticulum stress signaling pathway in triple-negative breast cancer cells. Cell Death Dis 2021; 12:520. [PMID: 34021125 PMCID: PMC8139965 DOI: 10.1038/s41419-021-03787-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 05/01/2021] [Accepted: 05/03/2021] [Indexed: 12/12/2022]
Abstract
Triple-negative breast cancer (TNBC) has a poor prognosis compared to other breast cancer subtypes. Although epidermal growth factor receptor (EGFR) is overexpressed in TNBC, clinical trials with EGFR inhibitors including tyrosine kinase inhibitors (EGFR-TKI) in TNBC have heretofore been unsuccessful. To develop effective EGFR-targeted therapy for TNBC, the precise mechanisms of EGFR-TKI resistance in TNBC need to be elucidated. In this study, to understand the molecular mechanisms involved in the differences in EGFR-TKI efficacy on TNBC between human and mouse, we focused on the effect of IL-26, which is absent in mice. In vitro analysis showed that IL-26 activated AKT and JNK signaling of bypass pathway of EGFR-TKI in both murine and human TNBC cells. We next investigated the mechanisms involved in IL-26-mediated EGFR-TKI resistance in TNBC. We identified EphA3 as a novel functional receptor for IL-26 in TNBC. IL-26 induced dephosphorylation and downmodulation of EphA3 in TNBC, which resulted in increased phosphorylation of AKT and JNK against EGFR-TKI-induced endoplasmic reticulum (ER) stress, leading to tumor growth. Meanwhile, the blockade of IL-26 overcame EGFR-TKI resistance in TNBC. Since the gene encoding IL-26 is absent in mice, we utilized human IL-26 transgenic (hIL-26Tg) mice as a tumor-bearing murine model to characterize the role of IL-26 in the differential effect of EGFR-TKI in human and mice and to confirm our in vitro findings. Our findings indicate that IL-26 activates the bypass pathway of EGFR-TKI, while blockade of IL-26 overcomes EGFR-TKI resistance in TNBC via enhancement of ER stress signaling. Our work provides novel insights into the mechanisms of EGFR-TKI resistance in TNBC via interaction of IL-26 with its newly identified receptor EphA3, while also suggesting IL-26 as a possible therapeutic target in TNBC.
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Itoh T, Toda N, Osaki T, Maegawa Y, Yoshizawa R, Ishikawa Y, Nishiyama O, Yoshizawa M, Nakajima S, Nakamura M, Morino Y. Impact of east Japan earthquake disaster with massive tsunami for prevalence of Takotsubo syndrome – a multicenter regional registry before and after east Japan earthquake disaster. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Previous studies demonstrated Takotsubo syndrome (TS) was easy provoked by earthquake disaster. However, a previous other regional report demonstrated TS was not increased after 2011 east Japan earthquake disaster. The purpose of this study was to clarify incidence of TS after the earthquake disaster in Iwate prefecture during long term period.
Method
Consecutive hospitalized TS patients were registered during 8 years between 2009 and 2016 in our medical university and five Iwate prefecture hospitals. Moreover, patients were divided into two groups, i.e., those with the inland and those with tsunami-stricken area groups. Prevalence of TS were calculated by standard incidence ratio (SIR) before and after the earthquake disaster. Moreover, long-term prognosis in the both groups was compared using Kaplan-Meier analysis.
Results
A total of 112 TS (male 25 and female 87) were registered from acute coronary syndrome registry in each hospital (n=4,163). Averaged age was 75.3 year-old. A total number of TS just after the two months of the earthquake (March and April 2011) was nine and significance monthly variation was observed comparing with the other months (p=0.029). SIR before and after the disaster is as following Figure. There were no significant differences for long-term prognosis between the two groups (p=0.20).
Conclusion
Incidence of TS was increased in acute phase after east Japan earthquake disaster. However, significance increases were maintained during long-term period, although number of TS was decreased after acute phase. TS is increased not only acute but also chronic phase after the serious earthquake disaster.
Standard incidence ratio
Funding Acknowledgement
Type of funding source: None
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Ashina S, Sakai A, Masuda A, Tsujimae M, Kobayashi T, Shiomi Y, Shiomi H, Kanaji S, Itoh T, Kakeji Y, Kodama Y. Gastrointestinal: Gastric outlet obstruction caused by a hamartomatous inverted polyp and an ectopic pancreas. J Gastroenterol Hepatol 2020; 35:1667. [PMID: 32285468 DOI: 10.1111/jgh.15054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 03/25/2020] [Indexed: 12/09/2022]
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Whiteside GT, Hummel M, Knappenberger T, Hiroyama S, Itoh T, Takai N, Kyle DJ. 0001 Activation of Nociceptin/Orphanin-FQ Peptide (NOP) Receptors Produces an Increase in Non-REM Sleep in Rats and Constitutes a Novel and Attractive Target for the Treatment of Insomnia. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Treatments for insomnia have targeted GABA, histamine, serotonin, melatonin and orexin receptors. The nociceptin/orphanin-FQ peptide (NOP) receptor is widely expressed in the nervous system. High doses of NOP agonists administered systemically or locally into the CNS can result in sedation, however, the utility of targeting this receptor to treat insomnia has not been fully described.
Methods
V117957 is a recently described investigational oral, potent and selective NOP receptor partial agonist. We determined the brain Kp in whole brain and multiple sub-regions (50mg/kg) and receptor occupancy in the hypothalamus (30, 300mg/kg) via in vivo displacement using [3H]-NOP-1A. EEG/EMG were determined in rats chronically implanted with electrodes (cortex and dorsal neck muscle) and recorded via telemetry following dosing (3, 30, 300mg/kg); sleep stage was determined from visual analysis of EEG level. Sleep parameters were also assessed in NOP receptor knock-out rats (300mg/kg). The side-effect profile for V117957 was determined by functional observation battery, whole-body plethysmography, Morris water maze (MWM) (up to 600mg/kg) and conditioned place preference (CPP) assay (up to 300mg/kg).
Results
V117957 displayed limited distribution into the CNS but achieved a high level of receptor occupancy (75% at 30mg/kg). Administration of V117957 produced dose-dependent and statistically significant increases in non-REM sleep with a minimally efficacious dose of 30mg/kg; a coincident dose-dependent and statistically significant decrease in wakefulness and a non-dose-dependent effect on REM sleep occurred. These changes were not seen in knock-out animals demonstrating effects are via NOP receptors. At doses higher than those that increased non-REM sleep, V117957 had no effects in a functional observational battery, did not affect escape latency in MWM or produce CPP; additionally, V117957 did not affect respiratory parameters.
Conclusion
We conclude that activation of NOP receptors decreases wakefulness and increases non-REM sleep in rats with an improved preclinical profile compared to historical profiles of current treatments and, therefore, may represent a novel and attractive target for the treatment of insomnia.
Support
Funded by Shionogi and Imbrium Therapeutics, a subsidiary of Purdue Pharma L.P.
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Mori H, Nishihara K, Honda S, Kojima S, Takegami M, Takahashi J, Itoh T, Watanabe T, Takenaka T, Ito M, Takayama M, Kario K, Sumiyoshi T, Kimura K, Yasuda S. P3615The number of coronary risk factors and mortality in patients with acute myocardial infarction from Japanese nation-wide real-world database. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Hypertension, diabetes, dyslipidemia and smoking are so-called coronary risk factors for coronary heart disease, which were established by extensive epidemiological research. However, in Japanese patients with acute myocardial infarction (AMI), the impact of number of coronary risk factors on in-hospital morality has not been elucidated.
Methods
The Japan Acute Myocardial Infarction Registry (JAMIR) is a nationwide real-world database integrated form 10 regional registries. We examined the association between number of coronary risk factors and in-hospital mortality from this JAMIR registry.
Results
The data were obtained from total of 20462 AMI patients (mean age, 68.8±13.3 years old; 15281 men, 5181 women). Figure 1 shows the prevalence of each coronary risk factors stratified by sex and decade. The prevalence of hypertension became higher with the advanced age while the prevalence of smoking became lower with the advanced age. Prevalence of diabetes and dyslipidemia were highest in middle age. Majority (76.9%) of the patients with AMI had at least 1 of these coronary risk factors and, 23.1% had none of them. Overall, except women under 50, number of coronary risk factor was relatively less in older age (Figure 2). In-hospital mortality by sex and decades was shown in figure 3. In-hospital mortality rates were 10.7%, 10.5%, 7.2%, 5.0% and 4.5% with 0, 1, 2, 3 and 4 risk factors, respectively (Figure 4A). After adjusting age and sex, there was an inverse association between the number of coronary risk factors and in-hospital mortality (adjusted odds ratio [1.68; 95% CI, 1.20–2.35] among individuals with 0 vs. 4 risk factors, Figure 4B).
Conclusion
In the present study of Japanese patients with AMI, who received modern medical treatment, in-hospital mortality was inversely related to the number of coronary risk factors.
Acknowledgement/Funding
Grant-in-Aid for Scientific Research
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Minami K, Tanaka Y, Okamoto T, Shimizu N, Doi T, Ogawa H, Hokka D, Jimbo N, Nishio W, Yoshimura M, Itoh T, Maniwa Y. EP1.12-17 Neuroendocrine Marker Staining Pattern Categorization of Small-Sized Pulmonary Large Cell Neuroendocrine Carcinoma. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.2262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Hatano R, Itoh T, Otsuka H, Okamoto S, Komiya E, Iwata S, Aune TM, Dang NH, Kuwahara-Arai K, Ohnuma K, Morimoto C. Characterization of novel anti-IL-26 neutralizing monoclonal antibodies for the treatment of inflammatory diseases including psoriasis. MAbs 2019; 11:1428-1442. [PMID: 31397631 DOI: 10.1080/19420862.2019.1654305] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Interleukin (IL)-26, known as a Th17 cytokine, acts on various cell types and has multiple biological functions. Although its precise role still remains to be elucidated, IL-26 is suggested to be associated with the pathology of diverse chronic inflammatory diseases such as psoriasis, inflammatory bowel diseases and rheumatoid arthritis. To develop novel neutralizing anti-human IL-26 monoclonal antibodies (mAbs) for therapeutic use in the clinical setting, we immunized mice with human IL-26 protein. Hybridomas producing anti-IL-26 mAbs were screened for various in vitro functional assays, STAT3 phosphorylation and antibiotic assays. Although the IL-20RA/IL-10RB heterodimer is generally believed to be the IL-26 receptor, our data strongly suggest that both IL-20RA-dependent and -independent pathways are involved in IL-26-mediated stimulation. We also investigated the potential therapeutic effect of anti-IL-26 mAbs in the imiquimod-induced psoriasis-like murine model using human IL-26 transgenic mice. These screening methods enabled us to develop novel neutralizing anti-human IL-26 mAbs. Importantly, administration of IL-26-neutralizing mAb did not have an effect on the antimicrobial activity of IL-26. Taken together, our data strongly suggest that our newly developed anti-human IL-26 mAb is a potential therapeutic agent for the treatment of diverse chronic inflammatory diseases including psoriasis.
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Matsumura Y, Ito Y, Mezawa Y, Sulidan K, Daigo Y, Hiraga T, Mogushi K, Wali N, Suzuki H, Itoh T, Miyagi Y, Yokose T, Shimizu S, Takano A, Terao Y, Saeki H, Ozawa M, Abe M, Takeda S, Okumura K, Habu S, Hino O, Takeda K, Hamada M, Orimo A. Stromal fibroblasts induce metastatic tumor cell clusters via epithelial-mesenchymal plasticity. Life Sci Alliance 2019; 2:e201900425. [PMID: 31331982 PMCID: PMC6653778 DOI: 10.26508/lsa.201900425] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Revised: 07/10/2019] [Accepted: 07/10/2019] [Indexed: 12/16/2022] Open
Abstract
Emerging evidence supports the hypothesis that multicellular tumor clusters invade and seed metastasis. However, whether tumor-associated stroma induces epithelial-mesenchymal plasticity in tumor cell clusters, to promote invasion and metastasis, remains unknown. We demonstrate herein that carcinoma-associated fibroblasts (CAFs) frequently present in tumor stroma drive the formation of tumor cell clusters composed of two distinct cancer cell populations, one in a highly epithelial (E-cadherinhiZEB1lo/neg: Ehi) state and another in a hybrid epithelial/mesenchymal (E-cadherinloZEB1hi: E/M) state. The Ehi cells highly express oncogenic cell-cell adhesion molecules, such as carcinoembryonic antigen-related cell adhesion molecule 5 (CEACAM5) and CEACAM6 that associate with E-cadherin, resulting in increased tumor cell cluster formation and metastatic seeding. The E/M cells also retain associations with Ehi cells, which follow the E/M cells leading to collective invasion. CAF-produced stromal cell-derived factor 1 and transforming growth factor-β confer the Ehi and E/M states as well as invasive and metastatic traits via Src activation in apposed human breast tumor cells. Taken together, these findings indicate that invasive and metastatic tumor cell clusters are induced by CAFs via epithelial-mesenchymal plasticity.
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Hatano R, Yamada T, Madokoro H, Otsuka H, Komiya E, Itoh T, Narita Y, Iwata S, Yamazaki H, Matsuoka S, Dang NH, Ohnuma K, Morimoto C. Development of novel monoclonal antibodies with specific binding affinity for denatured human CD26 in formalin-fixed paraffin-embedded and decalcified specimens. PLoS One 2019; 14:e0218330. [PMID: 31194830 PMCID: PMC6564021 DOI: 10.1371/journal.pone.0218330] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 05/30/2019] [Indexed: 11/19/2022] Open
Abstract
A 110-kDa type II transmembrane glycoprotein with dipeptidyl peptidase IV (DPPIV) activity in its extracellular region, CD26 has a multitude of biological functions and plays an important role in the regulation of inflammatory responses and tumor biology. Our work has focused on CD26 as a novel therapeutic target for various tumors and immune disorders, and we have recently developed a humanized anti-CD26 monoclonal antibody (mAb), YS110, which has promising safety profile and clinical activity in patients with malignant pleural mesothelioma. The development of an anti-human CD26 mAb that can clearly and reliably detect the denatured CD26 molecule in formalin-fixed paraffin-embedded (FFPE) tissues in the clinical setting is therefore of the utmost importance. To develop novel anti-CD26 mAbs capable of binding to denatured CD26, we immunized mice with urea-treated CD26 protein. Hybridoma supernatants were screened for specific reactivity with human CD26 by immunostaining through the use of a set of FFPE human CD26-positive or negative tumor cell lines. This screening method enables us to develop novel anti-human CD26 mAbs suitable for immunohistochemical staining of CD26 in FFPE non-tumor and tumor tissue sections with reliable clarity and intensity. Specifically, these mAbs display strong binding affinity to denatured human CD26 rather than undenatured human CD26, and are capable of detecting denatured human CD26 in decalcified specimens. These novel anti-CD26 mAbs are potentially useful for the analysis of CD26 expression in cancer patients with bony metastasis, and may help decide the appropriateness of YS110 therapy for future cancer patients.
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Itoh T, Hatano R, Komiya E, Otsuka H, Narita Y, Aune TM, Dang NH, Matsuoka S, Naito H, Tominaga M, Takamori K, Morimoto C, Ohnuma K. Biological Effects of IL-26 on T Cell–Mediated Skin Inflammation, Including Psoriasis. J Invest Dermatol 2019; 139:878-889. [DOI: 10.1016/j.jid.2018.09.037] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 09/25/2018] [Accepted: 09/26/2018] [Indexed: 12/20/2022]
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Okamura S, Osaki T, Nishimura K, Ohsaki H, Shintani M, Matsuoka H, Maeda K, Shiogama K, Itoh T, Kamoshida S. Thymidine kinase-1/CD31 double immunostaining for identifying activated tumor vessels. Biotech Histochem 2018; 94:60-64. [DOI: 10.1080/10520295.2018.1499962] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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Sekine Y, Itoh T, Toyoda T, Kaiho D, Hoshino H, Oheda H, Koh E. P2.16-39 The Application of 3D Medical Image Analyzer and a Fluorescence Guided Surgery for Pulmonary Sublobar Resection. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1514] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Murakami T, Ikari Y, Taniai S, Ishibashi Y, Taguchi I, Ako J, Kyono H, Yoshizawa M, Itoh T, Morino Y, Kato R, Sakuma M, Sugimura H, Akashi Y, Yoshino H. P4393The clinical characteristics of mortality in patients with Takotsubo Syndrome during hospitalization-A Multicenter Registry in Eight-University Hospitals in East Japan. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Hirai T, Yamaga R, Fujita A, Itoh T. Low body mass index is a risk factor for hyperkalaemia associated with angiotensin converting enzyme inhibitors and angiotensin II receptor blockers treatments. J Clin Pharm Ther 2018; 43:829-835. [PMID: 29908131 DOI: 10.1111/jcpt.12720] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 05/14/2018] [Indexed: 12/19/2022]
Abstract
WHAT IS KNOWN AND OBJECTIVE Angiotensin converting enzyme inhibitors (ACEI) and angiotensin II receptor blockers (ARB) represent the cornerstones of hypertension and congestive heart failure treatment. Risk factors for hyperkalaemia associated with ACEI and ARB are chronic kidney disease and concomitant medications which increase serum potassium level. Body mass index (BMI) also affects pharmacokinetics of ACEI and ARB and potassium disposition. We evaluated the relationship between BMI and hyperkalaemia associated with ACEI and ARB treatments. METHODS Study design is a retrospective case-control analysis. Patients who had been prescribed ACEI or ARB between June 2015 and June 2017 at Tokyo Women's Medical University, Medical Center East, were included. Patient clinical background was collected from medical records. Hyperkalaemia was defined as serum potassium above 5.5 meq/L. The concomitant use of ACEI and ARB, aldosterone antagonists, direct renin inhibitor, sulfamethoxazole-trimethoprim and non-steroidal anti-inflammatory drugs (NSAIDs) was regarded as hyperkalaemia-inducing medications. The relationship between BMI and hyperkalaemia associated with ACEI and ARB treatments was assessed using multivariable logistic regression analysis. RESULTS AND DISCUSSION The study included 2987 patients aged 70.1 ± 12.9 years, 61.0% were men, and BMI was 23.8 ± 4.4 kg/m2 . The incidence of hyperkalaemia was 7.8%. Multivariable logistic regression analysis revealed that age >65 years, low BMI, diabetes, history of treatment for hyperkalaemia, serum sodium <135 meq/L, eGFR <30 mL/min/1.73m2 and the concomitant use of hyperkalaemia-inducing medications were independent risk factors for hyperkalaemia associated with ACEI and ARB. WHAT IS NEW AND CONCLUSION This study demonstrated that BMI provides useful information for the identification of potential risk for hyperkalaemia associated with ACEI and ARB treatments.
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Ohnuma K, Hatano R, Komiya E, Otsuka H, Itoh T, Iwao N, Kaneko Y, Yamada T, Dang NH, Morimoto C. A novel role for CD26/dipeptidyl peptidase IV as a therapeutic target. Front Biosci (Landmark Ed) 2018; 23:1754-1779. [PMID: 29772527 DOI: 10.2741/4671] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
CD26 is a 110 kDa surface glycoprotein with intrinsic dipeptidyl peptidase IV activity that is expressed on numerous cell types and has a multitude of biological functions. The role of CD26 in immune regulation has been extensively characterized, with recent findings elucidating its linkage with signaling pathways and structures involved in T-lymphocyte activation as well as antigen presenting cell-T-cell interaction. In this paper, we will review emerging data on CD26-mediated immune regulation suggesting that CD26 may be an appropriate therapeutic target for the treatment of selected immune disorders as well as Middle East respiratory syndrome coronavirus. Moreover, we have had a long-standing interest in the role of CD26 in cancer biology and its suitability as a novel therapeutic target in selected neoplasms. We reported robust in vivo data on the anti-tumor activity of anti-CD26 monoclonal antibody in mouse xenograft models. We herein review significant novel findings and the early clinical development of a CD26-targeted therapy in selected immune disorders and cancers, advances that can lead to a more hopeful future for patients with these intractable diseases.
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Fukumoto K, Onitsuka T, Itoh T, Sakasegawa H, Tanigawa H. Microstructure of fatigue-tested F82H steel under multi-axial loadings. NUCLEAR MATERIALS AND ENERGY 2018. [DOI: 10.1016/j.nme.2018.04.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Horita K, Cao Z, Itoh T. Veno-Right Ventricle Bypass as a Lung Support System during Pulmonary Surgery without Ventilation. Int J Artif Organs 2018. [DOI: 10.1177/039139889702001004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A special lung support technique is required during carina! or tracheal surgery. Veno venous extracorporeal membrane oxygenation (ECMO) has become an accepted techinique for temporary lung support. Therefore, the purpose of our experiments was to evaluate the effect of veno venous ECMO (veno-right ventricle bypass) without ventilatory support. In five mongrel dogs, two venous drainage cannula were inserted into the superior vena cava through the right jugular vein and the inferior vena cava through the right femoral vein. In addition, a venous return cannula was inserted into the right ventricle (RV) through the right jugular vein. The veno-right ventricle (veno-RV) bypass system was composed of a centrifugal pump and membrane oxygenator; pump flow was maintained at 88 ± 14 ml/kg/min. Excellent hemodynamics and good oxygenation were obtained. On the basis of these results, we conclude that veno-RV bypass may be used as lung support during pulmonary surgery even though the native lung is not ventilated during the veno-RV bypass procedure.
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Itoh T, Kawahira H, Nakashima H, Yata N. Deep learning analyzes Helicobacter pylori infection by upper gastrointestinal endoscopy images. Endosc Int Open 2018; 6:E139-E144. [PMID: 29399610 PMCID: PMC5794437 DOI: 10.1055/s-0043-120830] [Citation(s) in RCA: 118] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 09/22/2017] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND AND STUDY AIMS Helicobacter pylori (HP)-associated chronic gastritis can cause mucosal atrophy and intestinal metaplasia, both of which increase the risk of gastric cancer. The accurate diagnosis of HP infection during routine medical checks is important. We aimed to develop a convolutional neural network (CNN), which is a machine-learning algorithm similar to deep learning, capable of recognizing specific features of gastric endoscopy images. The goal behind developing such a system was to detect HP infection early, thus preventing gastric cancer. PATIENTS AND METHODS For the development of the CNN, we used 179 upper gastrointestinal endoscopy images obtained from 139 patients (65 were HP-positive: ≥ 10 U/mL and 74 were HP-negative: < 3 U/mL on HP IgG antibody assessment). Of the 179 images, 149 were used as training images, and the remaining 30 (15 from HP-negative patients and 15 from HP-positive patients) were set aside to be used as test images. The 149 training images were subjected to data augmentation, which yielded 596 images. We used the CNN to create a learning tool that would recognize HP infection and assessed the decision accuracy of the CNN with the 30 test images by calculating the sensitivity, specificity, and area under the receiver operating characteristic (ROC) curve (AUC). RESULTS The sensitivity and specificity of the CNN for the detection of HP infection were 86.7 % and 86.7 %, respectively, and the AUC was 0.956. CONCLUSIONS CNN-aided diagnosis of HP infection seems feasible and is expected to facilitate and improve diagnosis during health check-ups.
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Nokami T, Yamashita T, Komura T, Handa N, Shimizu M, Yamaguchi K, Domi Y, Usui H, Sakaguchi H, Itoh T. Effects of the ether oxygen atom in alkyl side chains on the physical properties of piperidinium ionic liquids. Faraday Discuss 2018; 206:523-534. [DOI: 10.1039/c7fd00142h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Various types of piperidinium ionic liquids equipped with an oxygen atom-containing alkyl side chain on the positively charged nitrogen atom were systematically synthesized and their physical properties investigated.
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Ohnuma K, Hatano R, Itoh T, Iwao N, Dang NH, Morimoto C. Role of IL-26+CD26+CD4 T Cells in Pulmonary Chronic Graft-Versus-Host Disease and Treatment with Caveolin-1-Ig Fc Conjugate. Crit Rev Immunol 2017; 36:239-267. [PMID: 28008806 DOI: 10.1615/critrevimmunol.2016018772] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Obliterative bronchiolitis is the primary noninfectious pulmonary complication after allogeneic hematopoietic cell transplantation and the only pathognomonic manifestation of pulmonary chronic graft-versus-host disease (cGVHD). In our recent study, we identified a novel effect of IL-26, which is absent in rodents, on transplant related-obliterative bronchiolitis. Sublethally irradiated NOD/Shi-scidIL2rγnull mice transplanted with human umbilical cord blood gradually exhibited obliterative bronchiolitis with increased collagen deposition and predominant infiltration with human IL-26+CD26+CD4 T cells. Moreover, we showed that IL-26 increased collagen synthesis in fibroblasts in vitro and that collagen contents were increased in a murine GVHD model using IL26 transgenic mice. In vitro analysis demonstrated a significant increase in IL-26 production by CD4 T cells following CD26 costimulation, while immunoglobulin Fc domain fused with the N-terminal of caveolin-1, the ligand for CD26, (Cav-Ig) effectively inhibited production of IL-26. Administration of Cav-Ig before or after onset of GVHD impeded the development of clinical and histologic features of GVHD without interrupting engraftment of donor-derived human cells, with preservation of the graft-versus-leukemia effect. We concluded that cGVHD of the lungs is caused in part by IL-26+CD26+CD4 T cells, and that treatment with Cav-Ig could be beneficial for cGVHD prevention and therapy.
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Sakai Y, Ohbayashi C, Yanagita E, Jimbo N, Kajimoto K, Sakuma T, Hirose T, Yoshimura M, Maniwa Y, Itoh T. PRR11 immunoreactivity is a weak prognostic factor in non-mucinous invasive adenocarcinoma of the lung. Pathologica 2017; 109:133-139. [PMID: 29154370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023] Open
Abstract
INTRODUCTION Proline-rich protein 11 (PRR11) functions in the progression of cell cycle, and silencing the PRR11 gene in lung cancer cells results in the inhibition of cellular proliferation, cell cycle progression, cell migration, invasion and colony formation. PRR11 may therefore be a therapeutic target in lung cancer. MATERIALS AND METHODS Microarrays of surgical specimens of non-mucinous invasive adenocarcinoma of the lung, from 346 subjects that were not given preoperative therapy, were autoimmunostained with PRR11 and, except for trace and pseudo-positivity, assessed as "positive" at any proportion and intensity. RESULTS PRR11 immunoreactivity demonstrated a tendency to associate with an aggressive phenotype (tumor size, vascular invasion, and adjuvant therapy) and some effect on overall survival (Hazard ratio 1.51). CONCLUSIONS PRR11 may be a weak prognostic indicator of overall survival of patients with non-mucinous invasive adenocarcinoma of the lung.
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Kato M, Itoh T, Sugai H, Kawamura Y, Hayashi T, Nishi M, Tanasec M, Matsuzaki T, Ishida K, Nagamine K. Development of Electrochemical Hydrogen Pump Under Vacuum Condition for a Compact Tritium Gas Recycling System. FUSION SCIENCE AND TECHNOLOGY 2017. [DOI: 10.13182/fst02-a22707] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Ueda S, Nanjou Y, Itoh T, Tatenuma K, Matsuyama M, Watanabe K. Development of Advanced Column Material for Hydrogen Isotope Separation at Room Temperature. FUSION SCIENCE AND TECHNOLOGY 2017. [DOI: 10.13182/fst02-a22763] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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