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Terashima T, Yamashita T, Takemura N, Inaki A, Shimizu A, Harada K, Yamashita T, Kinuya S, Hanada K. A case of frequent hypoglycemic attacks successfully controlled with capecitabine plus temozolomide and 177Lu-DOTATATE peptide receptor radionuclide therapy in a patient with recurrent pancreatic insulinoma. Clin J Gastroenterol 2023; 16:767-771. [PMID: 37405635 DOI: 10.1007/s12328-023-01824-8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 06/18/2023] [Indexed: 07/06/2023]
Abstract
A 59-year-old woman with metastatic pancreatic insulinoma, having undergone several treatment regimens including sunitinib, everolimus, lanreotide and streptozocin plus 5-fluorouracil, was admitted to our hospital because of frequent hypoglycemic attacks. These were refractory to medical treatment using diazoxide and required frequent daily intravenous glucose infusions. She was started on capecitabine and temozolomide (CAPTEM), followed by initiation of 177Lu-DOTATATE peptide receptor radionuclide therapy (PRRT). The frequency of hypoglycemic attacks decreased after treatment began and she was discharged on day 58 post-admission, without requiring daily glucose infusions. CAPTEM and PRRT were continued without any major adverse events. Computed tomography revealed shrinkage of primary and metastatic lesions, an anti-tumor effect that continued 8 months after treatment was initiated. Hypoglycemic attacks caused by insulinomas are often refractory to conventional therapy; however, combination treatment using CAPTEM and PRRT has demonstrated a positive and significant response, successfully restoring glycemic control.
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Affiliation(s)
- Takeshi Terashima
- Department of Gastroenterology, Kanazawa University Hospital, 13-1 Takara-Machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Tatsuya Yamashita
- Department of Gastroenterology, Kanazawa University Hospital, 13-1 Takara-Machi, Kanazawa, Ishikawa, 920-8641, Japan.
| | - Naoki Takemura
- Department of Gastroenterology, Kanazawa University Hospital, 13-1 Takara-Machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Anri Inaki
- Department of Nuclear Medicine, Kanazawa University Hospital, Kanazawa, Ishikawa, 920-8641, Japan
| | - Akinori Shimizu
- Department of Gastroenterology, Onomichi General Hospital, Onomichi, Hiroshima, 722-8508, Japan
| | - Kenichi Harada
- Department of Human Pathology, Kanazawa University Graduate School of Medicine, Kanazawa, Ishikawa, 920-8640, Japan
| | - Taro Yamashita
- Department of Gastroenterology, Kanazawa University Hospital, 13-1 Takara-Machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Seigo Kinuya
- Department of Nuclear Medicine, Kanazawa University Hospital, Kanazawa, Ishikawa, 920-8641, Japan
| | - Keiji Hanada
- Department of Gastroenterology, Onomichi General Hospital, Onomichi, Hiroshima, 722-8508, Japan
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2
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Ogawa M, Nohara H, Hsu HH, Ishizaka M, Miyagawa Y, Takemura N. Association between glomerular filtration rate and plasma N-terminal pro-atrial natriuretic peptide concentration in dogs. J Small Anim Pract 2023; 64:568-573. [PMID: 37345758 DOI: 10.1111/jsap.13626] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 03/16/2023] [Accepted: 04/21/2023] [Indexed: 06/23/2023]
Abstract
OBJECTIVES To investigate the association between plasma N-terminal pro-atrial natriuretic peptide concentration and glomerular filtration rate in dogs. MATERIALS AND METHODS Dogs were classified into four categories by bodyweight. Dogs were divided into four groups (Groups 1 to 4) based on glomerular filtration rate estimates using plasma iohexol clearance per bodyweight category. Generalised linear models were built to explore the relationship between plasma N-terminal pro-atrial natriuretic peptide concentration and glomerular filtration rate and the effect of confounders on plasma N-terminal pro-atrial natriuretic peptide concentration. RESULTS Fifty-three dogs were included (Group 1, 25; Group 2, seven; Group 3, five; and Group 4, 16). The medians (interquartile range) N-terminal pro-atrial natriuretic peptide concentrations for Groups 1 to 4 were 7224 pg/mL (4766 to 10,254 mg/dL), 8958 pg/mL (4935 to 11,271 mg/dL), 9280 pg/mL (9195 to 10,384 mg/dL) and 12,683 pg/mL (9133 to 19,217 mg/dL), respectively. Group 4, estimated to have the highest reduction in glomerular filtration rate, had a higher plasma N-terminal pro-atrial natriuretic peptide concentration than Groups 1 to 3. Based on the final generalised linear model, influencing factors for plasma N-terminal pro-atrial natriuretic peptide concentration were plasma iohexol clearance (-0.136; 95% confidence interval, -0.227 to -0.046) and bodyweight (-0.058; 95% confidence interval, -0.098 to -0.018). CLINICAL SIGNIFICANCE N-terminal pro-atrial natriuretic peptide concentration is associated with the glomerular filtration rate.
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Affiliation(s)
- M Ogawa
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo, 180-8602, Japan
| | - H Nohara
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo, 180-8602, Japan
| | - H H Hsu
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo, 180-8602, Japan
| | - M Ishizaka
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo, 180-8602, Japan
| | - Y Miyagawa
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo, 180-8602, Japan
| | - N Takemura
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo, 180-8602, Japan
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3
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Pan Y, Ikoma K, Matsui R, Nakayama A, Takemura N, Saitoh T. Dasatinib suppresses particulate-induced pyroptosis and acute lung inflammation. Front Pharmacol 2023; 14:1250383. [PMID: 37705538 PMCID: PMC10495768 DOI: 10.3389/fphar.2023.1250383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 08/18/2023] [Indexed: 09/15/2023] Open
Abstract
Background: Humans are constantly exposed to various industrial, environmental, and endogenous particulates that result in inflammatory diseases. After being engulfed by immune cells, viz. Macrophages, such particulates lead to phagolysosomal dysfunction, eventually inducing pyroptosis, a form of cell death accompanied by the release of inflammatory mediators, including members of the interleukin (IL)-1 family. Phagolysosomal dysfunction results in the activation of the nod-like receptor family pyrin domain containing 3 (NLRP3) inflammasome, an immune complex that induces pyroptosis upon exposure to various external stimuli. However, several particulates induce pyroptosis even if the NLRP3 inflammasome is inhibited; this indicates that such inhibition is not always effective in treating diseases induced by particulates. Therefore, discovery of drugs suppressing particulate-induced NLRP3-independent pyroptosis is warranted. Methods: We screened compounds that inhibit silica particle (SP)-induced cell death and release of IL-1α using RAW264.7 cells, which are incapable of NLRP3 inflammasome formation. The candidates were tested for their ability to suppress particulate-induced pyroptosis and phagolysosomal dysfunction using mouse primary macrophages and alleviate SP-induced NLRP3-independent lung inflammation. Results: Several Src family kinase inhibitors, including dasatinib, effectively suppressed SP-induced cell death and IL-1α release. Furthermore, dasatinib suppressed pyroptosis induced by other particulates but did not suppress that induced by non-particulates, such as adenosine triphosphate. Dasatinib reduced SP-induced phagolysosomal dysfunction without affecting phagocytosis of SPs. Moreover, dasatinib treatment strongly suppressed the increase in IL-1α levels and neutrophil counts in the lungs after intratracheal SP administration. Conclusion: Dasatinib suppresses particulate-induced pyroptosis and can be used to treat relevant inflammatory diseases.
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Affiliation(s)
- Yixi Pan
- Laboratory of Bioresponse Regulation, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - Kenta Ikoma
- Laboratory of Bioresponse Regulation, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - Risa Matsui
- Laboratory of Bioresponse Regulation, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - Akiyoshi Nakayama
- Department of Integrative Physiology and Bio-Nano Medicine, National Defense Medical College, Saitama, Japan
| | - Naoki Takemura
- Laboratory of Bioresponse Regulation, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - Tatsuya Saitoh
- Laboratory of Bioresponse Regulation, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
- Global Center for Medical Engineering and Informatics, Osaka University, Osaka, Japan
- Center for Infectious Diseases for Education and Research (CiDER), Osaka University, Osaka, Japan
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4
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Takemura N. [Development of Anti-inflammatory Drugs with Novel Mechanisms of Action Targeting Pyroptosis]. YAKUGAKU ZASSHI 2023; 143:997-1003. [PMID: 38044115 DOI: 10.1248/yakushi.23-00135] [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] [Indexed: 12/05/2023]
Abstract
Programmed cell death plays various physiological roles, one of which is an immune response that protects the body from infectious pathogens such as bacteria and viruses. Pathogen infection causes dysfunction of cellular organelles, such as mitochondria and lysosomes, triggering stress signals that induce programmed cell death. In some cases, cell death coincides with intracellular inflammatory cytokine release. Such programmed cell death, accompanied by the induction of inflammatory responses, is called pyroptosis, which inhibits pathogen proliferation within cells and attracts leukocytes that eliminate the pathogens, thereby preventing infection spread. Additionally, pyroptosis can be induced by noninfectious stimuli such as drugs, pollutants, and nutrients, resulting in severe inflammatory disease. Therefore, the development of effective anti-inflammatory drugs that prevent pyroptosis based on the understanding of the mechanisms responsible for its induction is an urgent requirement. This review provides an overview of the non-infectious inflammatory response caused by pyroptosis and the development of new anti-inflammatory drugs that target organelles to prevent pyroptosis to treat relevant inflammatory diseases.
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Affiliation(s)
- Naoki Takemura
- Laboratory of Bioresponse Regulation, Graduate School of Pharmaceutical Sciences, Osaka University
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5
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Matsui Y, Takemura N, Shirasaki Y, Takahama M, Noguchi Y, Ikoma K, Pan Y, Nishida S, Taura M, Nakayama A, Funatsu T, Misawa T, Harada Y, Sunazuka T, Saitoh T. Nanaomycin E inhibits NLRP3 inflammasome activation by preventing mitochondrial dysfunction. Int Immunol 2022; 34:505-518. [PMID: 35759801 DOI: 10.1093/intimm/dxac028] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 06/23/2022] [Indexed: 11/13/2022] Open
Abstract
The Nod-like receptor family pyrin domain containing 3 (NLRP3) is a cytosolic innate immune receptor that senses organelle dysfunction induced by various stimuli, such as infectious, environmental, metabolic, and drug stresses. Upon activation, NLRP3 forms an inflammasome with its adaptor protein apoptosis-associated speck-like protein, containing a caspase recruitment domain (ASC) and caspase-1, to trigger the release of inflammatory cytokines. The development of effective anti-inflammatory drugs targeting the NLRP3 inflammasome is in high demand as its aberrant activation often causes inflammatory diseases. Here, we found that nanaomycin A (NNM-A), a quinone-based antibiotic isolated from Streptomyces, effectively inhibited NLRP3 inflammasome-mediated inflammatory responses induced by imidazoquinolines, including imiquimod. Interestingly, its epoxy derivative nanaomycin E (NNM-E) showed a comparable inhibitory effect against the NLRP3 inflammasome-induced release of interleukin (IL)-1β and IL-18 from macrophages, with a much lower toxicity than NNM-A. NNM-E inhibited ASC oligomerization and caspase-1 cleavage, both of which are hallmarks of NLRP3 inflammasome activation. NNM-E reduced mitochondrial damage and the production of reactive oxygen species, thereby preventing the activation of the NLRP3 inflammasome. NNM-E treatment markedly alleviated psoriasis-like skin inflammation induced by imiquimod. Collectively, NNM-E inhibits NLRP3 inflammasome activation by preventing mitochondrial dysfunction with little toxicity and showed an anti-inflammatory effect in vivo. Thus, NNM-E could be a potential lead compound for developing effective and safe anti-inflammatory agents for the treatment of NLRP3 inflammasome-mediated inflammatory diseases.
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Affiliation(s)
- Yudai Matsui
- Laboratory of Bioresponse Regulation, School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - Naoki Takemura
- Laboratory of Bioresponse Regulation, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - Yoshitaka Shirasaki
- Laboratory of Bio-Analytical Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Michihiro Takahama
- Division of Inflammation Biology, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan.,Pritzker School of Molecular Engineering, the University of Chicago, Chicago, IL, USA
| | - Yoshihiko Noguchi
- Laboratory of Bioorganic Chemistry, Kitasato Institute for Life Sciences & Graduate School of Infection Control Sciences, Kitasato University, Tokyo, Japan.,Ōmura Satoshi Memorial Institute, Kitasato University, Tokyo, Japan
| | - Kenta Ikoma
- Laboratory of Bioresponse Regulation, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - Yixi Pan
- Laboratory of Bioresponse Regulation, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - Shuhei Nishida
- Laboratory of Bioresponse Regulation, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - Manabu Taura
- Laboratory of Bioresponse Regulation, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - Akiyoshi Nakayama
- Division of Inflammation Biology, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan.,Department of Integrative Physiology and Bio-Nano Medicine, National Defense Medical College, Saitama, Japan
| | - Takashi Funatsu
- Laboratory of Bio-Analytical Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Takuma Misawa
- Laboratory for Immune Cell Systems, RIKEN Center for Integrative Medical Sciences, Kanagawa, Japan
| | - Yoshie Harada
- Laboratory for Nanobiology, Institute for Protein Research, Osaka University, Osaka, Japan.,Center for Quantum Information and Quantum Biology, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Osaka, Japan
| | - Toshiaki Sunazuka
- Laboratory of Bioorganic Chemistry, Kitasato Institute for Life Sciences & Graduate School of Infection Control Sciences, Kitasato University, Tokyo, Japan.,Ōmura Satoshi Memorial Institute, Kitasato University, Tokyo, Japan
| | - Tatsuya Saitoh
- Laboratory of Bioresponse Regulation, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan.,Division of Inflammation Biology, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan.,Global Center for Medical Engineering and Informatics, Osaka University, Osaka, Japan
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6
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Ikoma K, Takahama M, Kimishima A, Pan Y, Taura M, Nakayama A, Arai M, Takemura N, Saitoh T. Oridonin suppresses particulate-induced NLRP3-independent IL-1α release to prevent crystallopathy in the lung. Int Immunol 2022; 34:493-504. [PMID: 35639943 DOI: 10.1093/intimm/dxac018] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 05/24/2022] [Indexed: 11/12/2022] Open
Abstract
The human body is exposed to various particulates of industrial, environmental, or endogenous origin. Invading or intrinsic particulates can induce inflammation by aberrantly activating the immune system, thereby causing crystallopathies. When immune cells such as macrophages phagocytose the particulates, their phagolysosomal membranes undergo mechanical damage, eventually leading to pyroptotic cell death accompanied by the release of inflammatory cytokines, including interleukin (IL)-1αand IL-1β. The Nod-like receptor family pyrin domain containing 3 (NLRP3) inflammasome is responsible for particulate-induced IL-1βrelease and is therefore regarded as a potential therapeutic target for inflammation-mediated crystallopathies. However, IL-1α is released after particulate stimulation in an NLRP3 inflammasome-independent manner and plays a critical role in disease development. Therefore, drugs that exert potent anti-inflammatory effects by comprehensively suppressing particulate-induced responses, including IL-1βrelease and IL-1αrelease, should be developed. Here, we found that oridonin, a diterpenoid isolated from Isodon japonicus HARA, strongly suppressed particulate-induced cell death, accompanied by the release of IL-1αand IL-1β in mouse and human macrophages. Oridonin reduced particulate-induced phagolysosomal membrane damage in macrophages without affecting phagocytosis of particulates. Furthermore, oridonin treatment markedly suppressed the symptoms of silica particle-induced pneumonia, which was attributed to the release of IL-1α independently of NLRP3. Thus, oridonin is a potential lead compound for developing effective therapeutics for crystallopathies attributed to NLRP3-dependent as well as NLRP3-independent inflammation.
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Affiliation(s)
- Kenta Ikoma
- Laboratory of Bioresponse Regulation, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, 565-0871, Japan
| | - Michihiro Takahama
- Division of Inflammation Biology, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, 770-8503, Japan.,Pritzker School of Molecular Engineering, the University of Chicago, Chicago, IL 60637, USA
| | - Atsushi Kimishima
- Laboratory of Natural Products for Drug Discovery, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, 565-0871, Japan
| | - Yixi Pan
- Laboratory of Bioresponse Regulation, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, 565-0871, Japan
| | - Manabu Taura
- Laboratory of Bioresponse Regulation, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, 565-0871, Japan
| | - Akiyoshi Nakayama
- Division of Inflammation Biology, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, 770-8503, Japan.,Department of Integrative Physiology and Bio-Nano Medicine, National Defense Medical College, Saitama, 359-8513, Japan
| | - Masayoshi Arai
- Laboratory of Natural Products for Drug Discovery, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, 565-0871, Japan
| | - Naoki Takemura
- Laboratory of Bioresponse Regulation, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, 565-0871, Japan
| | - Tatsuya Saitoh
- Laboratory of Bioresponse Regulation, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, 565-0871, Japan.,Division of Inflammation Biology, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, 770-8503, Japan.,Global Center for Medical Engineering and Informatics, Osaka University, Osaka, 565-0871, Japan
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Chan SL, Lin CC, Chau PH, Takemura N, Fung JTC. Evaluating online learning engagement of nursing students. Nurse Educ Today 2021; 104:104985. [PMID: 34058645 DOI: 10.1016/j.nedt.2021.104985] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 04/20/2021] [Accepted: 05/17/2021] [Indexed: 05/24/2023]
Abstract
BACKGROUND Previous studies suggest that increased learning satisfaction may encourage learning engagement in an online learning environment. OBJECTIVES To evaluate the level of learning engagement and its relationship with students' perceived learning satisfaction in an online clinical nursing elective course. DESIGN A prospective interventional study. SETTINGS A nursing course was converted to an online format because of the coronavirus disease COVID pandemic. PARTICIPANTS Part-time post-registration nursing undergraduates enrolled in an elective online clinical course. METHODS Related teaching and learning strategies were deployed in the course using the Community of Inquiry framework. All students who completed the course were invited to complete an online survey that included a validated Online Student Engagement questionnaire (OSE). Pearson's correlations were used to determine the association between perceived learning satisfaction and learning engagement. A logistic regression model was used to explore the associations of gender, age, working experience and perceived learning satisfaction with higher learning engagement. RESULTS The questionnaires were completed by 56 of 68 students (82%). The Pearson's correlation coefficient between the mean perceived learning satisfaction and OSE scores was 0.75 (p < .001). Twenty-five students (45%) were identified as highly engaged, using a cut-off of ≥3.5 for the mean OSE score. The mean perceived learning satisfaction (SD) score differed significantly between highly engaged and not highly engaged students [4.02 (0.49) vs. 3.27 (0.62), p < .001]. The logistic regression model showed that a greater perceived learning satisfaction [adjusted odds ratio (OR): 17.2, 95% C.I.: 3.46-86.0, p = .001] was associated with an increased likelihood of higher learning engagement, and >1 year of working experience (adjusted OR: 0.11, 95% C.I.: 0.01-0.89, p = .0039) was associated with a decreased likelihood of higher learning engagement. CONCLUSIONS The study findings suggest that perceived learning satisfaction predicts learning engagement among nursing students in this online learning course.
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Affiliation(s)
- S L Chan
- University of Hong Kong School of Nursing, Hong Kong.
| | - C C Lin
- University of Hong Kong School of Nursing, Hong Kong.
| | - P H Chau
- University of Hong Kong School of Nursing, Hong Kong.
| | - N Takemura
- University of Hong Kong School of Nursing, Hong Kong.
| | - J T C Fung
- University of Hong Kong School of Nursing, Hong Kong.
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Abstract
The purine nucleotide ATP is a fundamental unit in cellular energy metabolism. Extracellular ATP and its metabolites are also ligands for a family of receptors, known as purinergic receptors, which are expressed ubiquitously in almost every cell type. In the immune system, extracellular ATP and its signals regulate the migration and activation of immune cells to orchestrate the induction and resolution of inflammation. In this review, we provide an overview of purinergic receptors and their downstream signaling related to macrophage activation. We also discuss the roles of purinergic signaling for macrophage functions in physiological and pathological conditions.
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Affiliation(s)
- Jing Wang
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine
| | - Naoki Takemura
- Laboratory of Bioresponse Regulation, Graduate School of Pharmaceutical Sciences, Osaka University
| | - Tatsuya Saitoh
- Laboratory of Bioresponse Regulation, Graduate School of Pharmaceutical Sciences, Osaka University
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Maruyama K, Kidoya H, Takemura N, Sugisawa E, Takeuchi O, Kondo T, Eid MMA, Tanaka H, Martino MM, Takakura N, Takayama Y, Akira S, Vandenbon A, Kumagai Y. Zinc Finger Protein St18 Protects against Septic Death by Inhibiting VEGF-A from Macrophages. Cell Rep 2021; 32:107906. [PMID: 32668247 DOI: 10.1016/j.celrep.2020.107906] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 04/22/2020] [Accepted: 06/23/2020] [Indexed: 12/20/2022] Open
Abstract
Zinc finger protein St18 was initially reported as candidate tumor suppressor gene, and also suggested that fibroblast St18 positively regulates NF-κB activation. Despite the pleiotropic functions of St18, little is known about its roles in macrophages. Here, we report that myeloid St18 is a potent inhibitor of VEGF-A. Mice lacking St18 in myeloid lineages exhibit increased retinal vasculature with enhanced serum VEGF-A concentrations. Despite the normal activation of NF-κB target genes, these mice are highly susceptible to LPS-induced shock, polymicrobial sepsis, and experimental colitis, accompanied by enhanced vascular and intestinal leakage. Pharmacological inhibition of VEGF signaling rescued the high mortality rate of myeloid-specific St18-deficient mice in response to inflammation. Mechanistically, St18 directly binds to Sp1 and attenuates its activity, leading to the suppression of Sp1 target gene VEGF-A. Using mouse genetic and pharmacological models, we reveal myeloid St18 as a critical septic death protector.
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Affiliation(s)
- Kenta Maruyama
- WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan; Division of Cell Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Aichi 444-8787, Japan.
| | - Hiroyasu Kidoya
- Department of Signal Transduction, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
| | - Naoki Takemura
- Department of Mucosal Immunology, School of Medicine, Chiba University, Chiba 260-8670, Japan
| | - Erika Sugisawa
- WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan
| | - Osamu Takeuchi
- Laboratory of Infection and Prevention, Department of Virus Research, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - Takeshi Kondo
- Department of Biochemistry, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita 15, Nishi 7, Kita-ku, Sapporo, Hokkaido 060-8636, Japan
| | | | - Hiroki Tanaka
- WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan
| | - Mikaël M Martino
- European Molecular Biology Laboratory Australia, Australian Regenerative Medicine Institute, Monash University, Melbourne, VIC 3800, Australia
| | - Nobuyuki Takakura
- Department of Signal Transduction, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
| | - Yasunori Takayama
- Division of Cell Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Aichi 444-8787, Japan; Department of Physiological Sciences, Graduate University for Advanced Studies, Aichi 444-8787, Japan
| | - Shizuo Akira
- WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan
| | - Alexis Vandenbon
- Laboratory of Infection and Prevention, Department of Virus Research, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - Yutaro Kumagai
- Biotechnology Research Institute for Drug Discovery, Department of Life Science and Biotechnology, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8565, Japan
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10
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Ohsaka F, Karatsu Y, Kadota Y, Tochio T, Takemura N, Sonoyama K. Gut commensals suppress interleukin-2 production through microRNA-200/BCL11B and microRNA-200/ETS-1 axes in lamina propria leukocytes of murine large intestine. Biochem Biophys Res Commun 2021; 534:808-814. [PMID: 33162030 DOI: 10.1016/j.bbrc.2020.10.103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 10/28/2020] [Indexed: 12/30/2022]
Abstract
The role of microRNAs (miRNAs) in how microbiota influence the host intestinal immune system is not fully understood. We compared the expression profiles of miRNAs and mRNAs in lamina propria leukocytes (LPL) in the large intestines of germ-free (GF) and specific pathogen-free (SPF) mice. Microarray analysis revealed different expression profiles of miRNAs and mRNAs between GF and SPF mice. Quantitative real time-PCR (qRT-PCR) showed that the level of miR-200 family members was significantly higher in SPF mice than in GF mice. In silico prediction followed by qRT-PCR suggested that Bcl11b, Ets1, Gbp7, Stat5b, and Zeb1 genes were downregulated by the miR-200 family. Western blotting revealed that the expression of BCL11B and ETS-1, but not ZEB1, in large intestinal LPL was significantly lower in SPF mice than in GF mice. Interleukin (IL)-2 production in cultured LPL upon stimulation with phorbol 12-myristate 13-acetate and ionomycin for 24 h was significantly lower in SPF mice than in GF mice. Conventionalization of GF mice substantially recapitulated SPF mice in terms of the expression of miR-200 family members and their target genes and IL-2 production in large intestinal LPL. Considering that BCL11B and ETS-1 reportedly function as transcription factors to activate the Il2 gene, we propose that the presence of gut commensals suppresses IL-2 production in large intestinal LPL, at least in part through post-transcriptional downregulation of Bcl11b and Ets1 genes by miR-200 family members.
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Affiliation(s)
- Fumina Ohsaka
- Graduate School of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan
| | - Yugo Karatsu
- Graduate School of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan
| | | | | | - Naoki Takemura
- Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, 565-0871, Japan
| | - Kei Sonoyama
- Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan.
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11
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Takasato Y, Kurashima Y, Kiuchi M, Hirahara K, Murasaki S, Arai F, Izawa K, Kaitani A, Shimada K, Saito Y, Toyoshima S, Nakamura M, Fujisawa K, Okayama Y, Kunisawa J, Kubo M, Takemura N, Uematsu S, Akira S, Kitaura J, Takahashi T, Nakayama T, Kiyono H. Orally desensitized mast cells form a regulatory network with Treg cells for the control of food allergy. Mucosal Immunol 2021; 14:640-651. [PMID: 33299086 PMCID: PMC8075951 DOI: 10.1038/s41385-020-00358-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [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: 01/13/2020] [Revised: 10/09/2020] [Accepted: 10/21/2020] [Indexed: 02/04/2023]
Abstract
Oral immunotherapy (OIT) is an effective approach to controlling food allergy. Although the detailed molecular and cellular mechanisms of OIT are unknown currently, they must be understood to advance the treatment of allergic diseases in general. To elucidate the mechanisms of OIT, especially during the immunological transition from desensitization to allergy regulation, we generated a clinical OIT murine model and used it to examine immunological events of OIT. We found that in mice that completed OIT successfully, desensitized mast cells (MCs) showed functionally beneficial alterations, such as increased induction of regulatory cytokines and enhanced expansion of regulatory T cells. Importantly, these regulatory-T-cell-mediated inhibitions of allergic responses were dramatically decreased in mice lacking OIT-induced desensitized MC. Collectively, these findings show that the desensitization process modulates the activation of MCs, leading directly to enhanced induction of regulatory-T-cell expansion and promotion of clinical allergic unresponsiveness. Our results suggest that efficiently inducing regulatory MCs is a novel strategy for the treatment of allergic disease.
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Affiliation(s)
- Yoshihiro Takasato
- grid.26999.3d0000 0001 2151 536XDepartment of Mucosal Immunology, The University of Tokyo Distinguished Professor Unit, The Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639 Japan ,grid.26091.3c0000 0004 1936 9959Department of Pediatrics, Keio University School of Medicine, Tokyo, 160-8582 Japan
| | - Yosuke Kurashima
- grid.26999.3d0000 0001 2151 536XDepartment of Mucosal Immunology, The University of Tokyo Distinguished Professor Unit, The Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639 Japan ,grid.136304.30000 0004 0370 1101Department of Innovative Medicine and Mucosal Immunology, Graduate School of Medicine, Chiba University, Chiba, 260-8670 Japan ,grid.26999.3d0000 0001 2151 536XInternational Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, 108–8639 Japan ,grid.266100.30000 0001 2107 4242Division of Gastroenterology, Department of Medicine, CU-UCSD Center for Mucosal Immunology, Allergy and Vaccines (CU-UCSD cMAV), University of California, San Diego, CA 92093-0956 USA ,grid.136304.30000 0004 0370 1101Institute for Global Prominent Research, Chiba University, Chiba, 260-8670 Japan ,grid.482562.fLaboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research and Laboratory of Gut Environmental System, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, 567-0085 Japan
| | - Masahiro Kiuchi
- grid.136304.30000 0004 0370 1101Department of Immunology, Graduate School of Medicine, Chiba University, Chiba, 260-8670 Japan
| | - Kiyoshi Hirahara
- grid.136304.30000 0004 0370 1101Department of Immunology, Graduate School of Medicine, Chiba University, Chiba, 260-8670 Japan
| | - Sayuri Murasaki
- grid.26999.3d0000 0001 2151 536XDepartment of Mucosal Immunology, The University of Tokyo Distinguished Professor Unit, The Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639 Japan ,grid.26999.3d0000 0001 2151 536XInternational Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, 108–8639 Japan
| | - Fujimi Arai
- grid.26999.3d0000 0001 2151 536XDepartment of Mucosal Immunology, The University of Tokyo Distinguished Professor Unit, The Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639 Japan ,grid.26999.3d0000 0001 2151 536XInternational Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, 108–8639 Japan
| | - Kumi Izawa
- grid.258269.20000 0004 1762 2738Atopy Research Center, Juntendo University Graduate School of Medicine, Tokyo, 113-8421 Japan
| | - Ayako Kaitani
- grid.258269.20000 0004 1762 2738Atopy Research Center, Juntendo University Graduate School of Medicine, Tokyo, 113-8421 Japan
| | - Kaoru Shimada
- grid.26999.3d0000 0001 2151 536XDepartment of Mucosal Immunology, The University of Tokyo Distinguished Professor Unit, The Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639 Japan ,grid.26999.3d0000 0001 2151 536XInternational Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, 108–8639 Japan
| | - Yukari Saito
- grid.136304.30000 0004 0370 1101Department of Innovative Medicine and Mucosal Immunology, Graduate School of Medicine, Chiba University, Chiba, 260-8670 Japan
| | - Shota Toyoshima
- grid.260969.20000 0001 2149 8846Allergy and Immunology Research Project Team, Research Institute of Medical Science, Center for Allergy, Center for Medical Education, Nihon University School of Medicine, Tokyo, 173-8610 Japan
| | - Miho Nakamura
- grid.26999.3d0000 0001 2151 536XDepartment of Mucosal Immunology, The University of Tokyo Distinguished Professor Unit, The Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639 Japan
| | - Kumiko Fujisawa
- grid.26999.3d0000 0001 2151 536XDepartment of Mucosal Immunology, The University of Tokyo Distinguished Professor Unit, The Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639 Japan
| | - Yoshimichi Okayama
- grid.260969.20000 0001 2149 8846Allergy and Immunology Research Project Team, Research Institute of Medical Science, Center for Allergy, Center for Medical Education, Nihon University School of Medicine, Tokyo, 173-8610 Japan
| | - Jun Kunisawa
- grid.26999.3d0000 0001 2151 536XInternational Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, 108–8639 Japan ,grid.482562.fLaboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research and Laboratory of Gut Environmental System, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, 567-0085 Japan
| | - Masato Kubo
- grid.509459.40000 0004 0472 0267Laboratory for Cytokine Regulation, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045 Japan ,grid.143643.70000 0001 0660 6861Division of Molecular Pathology, Research Institute for Biomedical Science, Tokyo University of Science, Chiba, 278-0022 Japan
| | - Naoki Takemura
- grid.136304.30000 0004 0370 1101Department of Innovative Medicine and Mucosal Immunology, Graduate School of Medicine, Chiba University, Chiba, 260-8670 Japan ,grid.26999.3d0000 0001 2151 536XInternational Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, 108–8639 Japan ,grid.136593.b0000 0004 0373 3971Laboratory of Bioresponse Regulation, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871 Japan
| | - Satoshi Uematsu
- grid.136304.30000 0004 0370 1101Department of Innovative Medicine and Mucosal Immunology, Graduate School of Medicine, Chiba University, Chiba, 260-8670 Japan ,grid.26999.3d0000 0001 2151 536XInternational Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, 108–8639 Japan ,grid.261445.00000 0001 1009 6411Department of Immunology and Genomics, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-8585 Japan
| | - Shizuo Akira
- grid.136593.b0000 0004 0373 3971Laboratory of Host Defense, WPI Immunology Frontier Research Center, Osaka University, Osaka, 565-0871 Japan ,grid.136593.b0000 0004 0373 3971Department of Host Defense, Research Institute for Microbial Diseases, Osaka University, Osaka, 565-0871 Japan
| | - Jiro Kitaura
- grid.258269.20000 0004 1762 2738Atopy Research Center, Juntendo University Graduate School of Medicine, Tokyo, 113-8421 Japan
| | - Takao Takahashi
- grid.26091.3c0000 0004 1936 9959Department of Pediatrics, Keio University School of Medicine, Tokyo, 160-8582 Japan
| | - Toshinori Nakayama
- grid.136304.30000 0004 0370 1101Department of Immunology, Graduate School of Medicine, Chiba University, Chiba, 260-8670 Japan
| | - Hiroshi Kiyono
- grid.26999.3d0000 0001 2151 536XDepartment of Mucosal Immunology, The University of Tokyo Distinguished Professor Unit, The Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639 Japan ,grid.26091.3c0000 0004 1936 9959Department of Pediatrics, Keio University School of Medicine, Tokyo, 160-8582 Japan ,grid.266100.30000 0001 2107 4242Division of Gastroenterology, Department of Medicine, CU-UCSD Center for Mucosal Immunology, Allergy and Vaccines (CU-UCSD cMAV), University of California, San Diego, CA 92093-0956 USA ,grid.136304.30000 0004 0370 1101Institute for Global Prominent Research, Chiba University, Chiba, 260-8670 Japan ,grid.136304.30000 0004 0370 1101Department of Immunology, Graduate School of Medicine, Chiba University, Chiba, 260-8670 Japan
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12
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Miyakawa H, Nagatani Y, Ogawa M, Nagakawa M, Sakatani A, Akabane R, Miyagawa Y, Takemura N. Fibroblast growth factor-23 as an early marker of CKD-mineral bone disorder in dogs: preliminary investigation. J Small Anim Pract 2020; 61:744-751. [PMID: 33037651 DOI: 10.1111/jsap.13244] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 08/18/2020] [Accepted: 09/15/2020] [Indexed: 12/28/2022]
Abstract
OBJECTIVES To examine the relationship between fibroblast growth factor-23 levels, chronic kidney disease severity and mineral metabolic disorders associated to chronic kidney disease in dogs. MATERIALS AND METHODS Fifteen control and 75 chronic kidney disease dogs were retrospectively included. Serum fibroblast growth factor-23 concentration and other phosphate metabolite parameters were compared between controls and each International Renal Interest Society stage. Multiple regression analysis was performed to determine the predictors of fibroblast growth factor-23. RESULTS Serum fibroblast growth factor-23 concentrations were significantly higher in dogs with IRIS stages 2, 3 and 4 chronic kidney disease than those in dogs in control group and with stage 1 and increased along with the severity of chronic kidney disease. Compared with control dogs, serum intact parathyroid hormone significantly increased from stage 2 and serum phosphorus concentrations increased in dogs with stage 4. In dogs with stage 2, fibroblast growth factor-23 levels significantly increased in those with hyperphosphatemia compared with those with normophosphatemia. While eight of 26 (30.8%) dogs with stage 2 developed hyperparathyroidism (intact parathyroid hormone>8.5 ng/L), 19 (73.1%) dogs with stage 2 had elevated fibroblast growth factor-23 levels above the reference range (>528 pg/mL). Log creatinine, log intact parathyroid hormone and log product of total calcium and phosphorus were independent predictors of log fibroblast growth factor-23. CLINICAL SIGNIFICANCE This preliminary study suggests that canine fibroblast growth factor-23 might be involved in mineral metabolic disorders associated to chronic kidney disease in dogs, and this factor could be potentially used as an early marker for this condition.
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Affiliation(s)
- H Miyakawa
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, Musashino-shi, Tokyo, 180-8602, Japan
| | - Y Nagatani
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, Musashino-shi, Tokyo, 180-8602, Japan
| | - M Ogawa
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, Musashino-shi, Tokyo, 180-8602, Japan
| | - M Nagakawa
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, Musashino-shi, Tokyo, 180-8602, Japan
| | - A Sakatani
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, Musashino-shi, Tokyo, 180-8602, Japan
| | - R Akabane
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, Musashino-shi, Tokyo, 180-8602, Japan
| | - Y Miyagawa
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, Musashino-shi, Tokyo, 180-8602, Japan
| | - N Takemura
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, Musashino-shi, Tokyo, 180-8602, Japan
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13
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Sugisawa E, Takayama Y, Takemura N, Kondo T, Hatakeyama S, Kumagai Y, Sunagawa M, Tominaga M, Maruyama K. RNA Sensing by Gut Piezo1 Is Essential for Systemic Serotonin Synthesis. Cell 2020; 182:609-624.e21. [DOI: 10.1016/j.cell.2020.06.022] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 04/27/2020] [Accepted: 06/09/2020] [Indexed: 12/22/2022]
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14
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Mikawa S, Nagakawa M, Ogi H, Akabane R, Koyama Y, Sakatani A, Ogawa M, Miyakawa H, Shigemoto J, Tokuriki T, Toda N, Miyagawa Y, Takemura N. Use of vertebral left atrial size for staging of dogs with myxomatous valve disease. J Vet Cardiol 2020; 30:92-99. [PMID: 32707334 DOI: 10.1016/j.jvc.2020.06.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 06/17/2020] [Accepted: 06/18/2020] [Indexed: 12/14/2022]
Abstract
INTRODUCTION/OBJECTIVES The American College of Veterinary Internal Medicine (ACVIM) guidelines suggest that pimobendan should be initiated in dogs which meet all criteria of stage B2 myxomatous mitral valve disease (MMVD): murmur intensity ≥ 3/6, left atrial-to-aortic ratio ≥ 1.6, normalized left ventricular internal diameter in diastole ≥ 1.7, and vertebral heart size > 10.5. Recently, a new radiographic index for left atrial enlargement, vertebral left atrial size (VLAS), was proposed. The objective of the present study was to evaluate whether VLAS is useful in staging MMVD and if it can distinguish between ACVIM stages B1 and B2. ANIMALS Ninety-seven client-owned dogs with MMVD were evaluated and classified as ACVIM stage B1, B2, or C-D. MATERIALS AND METHODS The echocardiographs and radiographs of all the dogs were retrospectively evaluated to obtain left atrial-to-aortic ratio, normalized left ventricular internal diameter in diastole, and VLAS values. The data were analyzed to assess the correlation between these measurements and VLAS, and the optimal cutoff value of VLAS was determined. RESULTS A VLAS cutoff value of 2.6 provided the greatest diagnostic accuracy for identification of dogs with ACVIM stage B2 MMVD (area under the curve, 0.96; sensitivity, 95%; specificity, 84%). A VLAS ≥2.5 exhibited the highest sensitivity (sensitivity, 100%; specificity, 78%), and a VLAS ≥ 3.1 exhibited the highest specificity (sensitivity, 47%; specificity, 100%). CONCLUSIONS VLAS is a helpful index for monitoring MMVD using radiography. A VLAS cutoff value of 2.5 could be used to identify dogs that may benefit from echocardiography to determine if they have reached ACVIM stage B2.
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Affiliation(s)
- S Mikawa
- Department of Clinical Pathology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari-shi, Ehime 794-8555, Japan.
| | - M Nagakawa
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | - H Ogi
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | - R Akabane
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | - Y Koyama
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | - A Sakatani
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | - M Ogawa
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | - H Miyakawa
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | - J Shigemoto
- Oji Pet Clinic, 1-22-9 Toshima, Kita-ku, Tokyo 114-0003, Japan
| | - T Tokuriki
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | - N Toda
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | - Y Miyagawa
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | - N Takemura
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
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15
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Takemura N, Kurashima Y, Mori Y, Okada K, Ogino T, Osawa H, Matsuno H, Aayam L, Kaneto S, Park EJ, Sato S, Matsunaga K, Tamura Y, Ouchi Y, Kumagai Y, Kobayashi D, Suzuki Y, Yoshioka Y, Nishimura J, Mori M, Ishii KJ, Rothenberg ME, Kiyono H, Akira S, Uematsu S. Eosinophil depletion suppresses radiation-induced small intestinal fibrosis. Sci Transl Med 2019; 10:10/429/eaan0333. [PMID: 29467297 DOI: 10.1126/scitranslmed.aan0333] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 10/05/2017] [Accepted: 01/17/2018] [Indexed: 12/14/2022]
Abstract
Radiation-induced intestinal fibrosis (RIF) is a serious complication after abdominal radiotherapy for pelvic tumor or peritoneal metastasis. Herein, we show that RIF is mediated by eosinophil interactions with α-smooth muscle actin-positive (α-SMA+) stromal cells. Abdominal irradiation caused RIF especially in the submucosa (SM) of the small intestine, which was associated with the excessive accumulation of eosinophils in both human and mouse. Eosinophil-deficient mice showed markedly ameliorated RIF, suggesting the importance of eosinophils. After abdominal irradiation, chronic crypt cell death caused elevation of extracellular adenosine triphosphate, which in turn activated expression of C-C motif chemokine 11 (CCL11) by pericryptal α-SMA+ cells in the SM to attract eosinophils in mice. Inhibition of C-C chemokine receptor 3 (CCR3) by genetic deficiency or neutralizing antibody (Ab) treatment suppressed eosinophil accumulation in the SM after irradiation in mice, suggesting a critical role of the CCL11/CCR3 axis in the eosinophil recruitment. Activated α-SMA+ cells also expressed granulocyte-macrophage colony-stimulating factor (GM-CSF) to activate eosinophils. Transforming growth factor-β1 from GM-CSF-stimulated eosinophils promoted collagen expression by α-SMA+ cells. In translational studies, treatment with a newly developed interleukin-5 receptor α-targeting Ab, analogous to the human agent benralizumab, depleted intestinal eosinophils and suppressed RIF in mice. Collectively, we identified eosinophils as a crucial factor in the pathogenesis of RIF and showed potential therapeutic strategies for RIF by targeting eosinophils.
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Affiliation(s)
- Naoki Takemura
- Department of Mucosal Immunology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan.,Division of Innate Immune Regulation, International Research and Development Center for Mucosal Vaccines, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Yosuke Kurashima
- Department of Mucosal Immunology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan.,Division of Mucosal Immunology, Department of Microbiology and Immunology, Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan.,Institute for Global Prominent Research, Chiba University, Chiba 260-8670, Japan.,Department of Innovative Medicine, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan.,Division of Clinical Vaccinology, International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Yuki Mori
- Laboratory of Biofunctional Imaging, World Premier Institute (WPI) Immunology Frontier Research Center, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Kazuki Okada
- Immunology and Allergy R&D Unit, R&D Division, Kyowa Hakko Kirin Co. Ltd., 3-6-6 Asahi-machi, Machida-shi, Tokyo 194-8533, Japan
| | - Takayuki Ogino
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan.,Institute of Medical Microbiology and Hygiene, University of Mainz Medical Centre, Obere Zahlbacher Strasse 67, Mainz 55131, Germany
| | - Hideki Osawa
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Hirosih Matsuno
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Lamichhane Aayam
- Division of Mucosal Immunology, Department of Microbiology and Immunology, Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Satoshi Kaneto
- Division of Mucosal Immunology, Department of Microbiology and Immunology, Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Eun Jeong Park
- Division of Mucosal Immunology, Department of Microbiology and Immunology, Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan.,Department of Molecular Pathobiology and Cell Adhesion Biology, Basic Medical Sciences, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - Shintaro Sato
- Division of Mucosal Immunology, Department of Microbiology and Immunology, Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan.,Mucosal Vaccine Project, BIKEN Innovative Vaccine Research Alliance Laboratories, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
| | - Kouta Matsunaga
- Division of Innate Immune Regulation, International Research and Development Center for Mucosal Vaccines, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Yusuke Tamura
- Division of Innate Immune Regulation, International Research and Development Center for Mucosal Vaccines, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Yasuo Ouchi
- Department of Mucosal Immunology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - Yutaro Kumagai
- Quantitative Immunology Research Unit, WPI Immunology Frontier Research Center, Osaka University, Osaka 565-0871, Japan
| | - Daichi Kobayashi
- Laboratory of Immune Regulation, Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan.,Laboratory of Mucosal Immunology, WPI Immunology Frontier Research Center, Osaka University, Osaka 565-0871, Japan
| | - Yutaka Suzuki
- Department of Medical Genome Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8562, Japan
| | - Yoshichika Yoshioka
- Laboratory of Biofunctional Imaging, World Premier Institute (WPI) Immunology Frontier Research Center, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Junichi Nishimura
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Masaki Mori
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Ken J Ishii
- Laboratory of Adjuvant Innovation, National Institute of Biomedical Innovation, 7-6-8 Asagi Saito, Ibaraki, Osaka 567-0085, Japan.,Laboratory of Vaccine Science, WPI Immunology Frontier Research Center, Osaka University, Osaka 565-0871, Japan
| | - Mark E Rothenberg
- Division of Allergy and Immunology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Hiroshi Kiyono
- Division of Mucosal Immunology, Department of Microbiology and Immunology, Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan.,Division of Clinical Vaccinology, International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan.,Department of Immunology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - Shizuo Akira
- Laboratory of Host Defense, WPI Immunology Frontier Research Center, Osaka University, Osaka 565-0871, Japan.,Department of Host Defense, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
| | - Satoshi Uematsu
- Department of Mucosal Immunology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan. .,Division of Innate Immune Regulation, International Research and Development Center for Mucosal Vaccines, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
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16
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Usui Y, Kimura Y, Satoh T, Takemura N, Ouchi Y, Ohmiya H, Kobayashi K, Suzuki H, Koyama S, Hagiwara S, Tanaka H, Imoto S, Eberl G, Asami Y, Fujimoto K, Uematsu S. Effects of long-term intake of a yogurt fermented with Lactobacillus delbrueckii subsp. bulgaricus 2038 and Streptococcus thermophilus 1131 on mice. Int Immunol 2019; 30:319-331. [PMID: 29767727 DOI: 10.1093/intimm/dxy035] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 05/12/2018] [Indexed: 01/12/2023] Open
Abstract
The gut is an extremely complicated ecosystem where micro-organisms, nutrients and host cells interact vigorously. Although the function of the intestine and its barrier system weakens with age, some probiotics can potentially prevent age-related intestinal dysfunction. Lactobacillus delbrueckii subsp. bulgaricus 2038 and Streptococcus thermophilus 1131, which are the constituents of LB81 yogurt, are representative probiotics. However, it is unclear whether their long-term intake has a beneficial influence on systemic function. Here, we examined the gut microbiome, fecal metabolites and gene expression profiles of various organs in mice. Although age-related alterations were apparent in them, long-term LB81 yogurt intake led to an increased Bacteroidetes to Firmicutes ratio and elevated abundance of the bacterial family S24-7 (Bacteroidetes), which is known to be associated with butyrate and propanoate production. According to our fecal metabolite analysis to detect enrichment, long-term LB81 yogurt intake altered the intestinal metabolic pathways associated with propanoate and butanoate in the mice. Gene ontology analysis also revealed that long-term LB81 yogurt intake influenced many physiological functions related to the defense response. The profiles of various genes associated with antimicrobial peptides-, tight junctions-, adherens junctions- and mucus-associated intestinal barrier functions were also drastically altered in the LB81 yogurt-fed mice. Thus, long-term intake of LB81 yogurt has the potential to maintain systemic homeostasis, such as the gut barrier function, by controlling the intestinal microbiome and its metabolites.
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Affiliation(s)
- Yuki Usui
- Division of Systems Immunology, The Institute of Medical Science, University of Tokyo, Shirokanedai, Minato-ku, Tokyo, Japan
| | - Yasumasa Kimura
- Division of Systems Immunology, The Institute of Medical Science, University of Tokyo, Shirokanedai, Minato-ku, Tokyo, Japan
| | - Takeshi Satoh
- Division of Systems Immunology, The Institute of Medical Science, University of Tokyo, Shirokanedai, Minato-ku, Tokyo, Japan
| | - Naoki Takemura
- Department of Mucosal Immunology, School of Medicine, Chiba University, Inohana, Chuou-ku, Chiba, Japan.,Division of Innate Immune Regulation, International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, University of Tokyo, Shirokanedai, Minato-ku, Tokyo, Japan
| | - Yasuo Ouchi
- Department of Mucosal Immunology, School of Medicine, Chiba University, Inohana, Chuou-ku, Chiba, Japan
| | - Hiroko Ohmiya
- Division of Systems Immunology, The Institute of Medical Science, University of Tokyo, Shirokanedai, Minato-ku, Tokyo, Japan
| | - Kyosuke Kobayashi
- Food Science Research Laboratories, R&D Division, Meiji Co., Ltd, Naruda, Odawara, Kanagawa, Japan
| | - Hiromi Suzuki
- Food Science Research Laboratories, R&D Division, Meiji Co., Ltd, Naruda, Odawara, Kanagawa, Japan
| | - Satomi Koyama
- Food Science Research Laboratories, R&D Division, Meiji Co., Ltd, Naruda, Odawara, Kanagawa, Japan
| | - Satoko Hagiwara
- Food Science Research Laboratories, R&D Division, Meiji Co., Ltd, Naruda, Odawara, Kanagawa, Japan
| | - Hirotoshi Tanaka
- Division of Rheumatology, Center for Antibody and Vaccine Therapy, IMSUT Hospital, The Institute of Medical Science, University of Tokyo, Shirokanedai, Minato-ku, Tokyo, Japan
| | - Seiya Imoto
- Division of Health Medical Data Science, Health Intelligence Center, The Institute of Medical Science, University of Tokyo, Shirokanedai, Minato-ku, Tokyo, Japan
| | - Gérard Eberl
- Institut Pasteur, Microenvironment and Immunity Unit, Paris, France.,INSERM, Paris, France
| | - Yukio Asami
- Food Science Research Laboratories, R&D Division, Meiji Co., Ltd, Naruda, Odawara, Kanagawa, Japan
| | - Kosuke Fujimoto
- Department of Mucosal Immunology, School of Medicine, Chiba University, Inohana, Chuou-ku, Chiba, Japan.,Division of Innate Immune Regulation, International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, University of Tokyo, Shirokanedai, Minato-ku, Tokyo, Japan
| | - Satoshi Uematsu
- Department of Mucosal Immunology, School of Medicine, Chiba University, Inohana, Chuou-ku, Chiba, Japan.,Division of Innate Immune Regulation, International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, University of Tokyo, Shirokanedai, Minato-ku, Tokyo, Japan
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17
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Ouchi Y, Patil A, Tamura Y, Nishimasu H, Negishi A, Paul SK, Takemura N, Satoh T, Kimura Y, Kurachi M, Nureki O, Nakai K, Kiyono H, Uematsu S. Generation of tumor antigen-specific murine CD8+ T cells with enhanced anti-tumor activity via highly efficient CRISPR/Cas9 genome editing. Int Immunol 2019; 30:141-154. [PMID: 29617862 DOI: 10.1093/intimm/dxy006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 02/17/2018] [Indexed: 12/17/2022] Open
Abstract
Immunotherapies have led to the successful development of novel therapies for cancer. However, there is increasing concern regarding the adverse effects caused by non-tumor-specific immune responses. Here, we report an effective strategy to generate high-avidity tumor-antigen-specific CTLs, using Cas9/single-guide RNA (sgRNA) ribonucleoprotein (RNP) delivery. As a proof-of-principle demonstration, we selected the gp100 melanoma-associated tumor antigen, and cloned the gp100-specific high-avidity TCR from gp100-immunized mice. To enable rapid structural dissection of the TCR, we developed a 3D protein structure modeling system for the TCR/antigen-major histocompatibility complex (pMHC) interaction. Combining these technologies, we efficiently generated gp100-specific PD-1(-) CD8+ T cells, and demonstrated that the genetically engineered CD8+ T cells have high avidity against melanoma cells both in vitro and in vivo. Our methodology offers computational prediction of the TCR response, and enables efficient generation of tumor antigen-specific CD8+ T cells that can neutralize tumor-induced immune suppression leading to a potentially powerful cancer therapeutic.
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Affiliation(s)
- Yasuo Ouchi
- Department of Mucosal Immunology, School of Medicine, Chiba University, Inohana, Chuo-ku, Chiba, Japan
| | - Ashwini Patil
- Human Genome Center, The Institute of Medical Science, University of Tokyo, Shirokanedai, Minato-ku, Tokyo, Japan
| | - Yusuke Tamura
- Division of Innate Immune Regulation, International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, University of Tokyo, Shirokanedai, Minato-ku, Tokyo, Japan
| | - Hiroshi Nishimasu
- Department of Biological Sciences, Graduate School of Science, University of Tokyo; JST, PRESTO, Yayoi, Bunkyo, Tokyo, Japan
| | - Aina Negishi
- Department of Mucosal Immunology, School of Medicine, Chiba University, Inohana, Chuo-ku, Chiba, Japan
| | - Sudip Kumar Paul
- Department of Mucosal Immunology, School of Medicine, Chiba University, Inohana, Chuo-ku, Chiba, Japan
| | - Naoki Takemura
- Department of Mucosal Immunology, School of Medicine, Chiba University, Inohana, Chuo-ku, Chiba, Japan.,Division of Innate Immune Regulation, International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, University of Tokyo, Shirokanedai, Minato-ku, Tokyo, Japan
| | - Takeshi Satoh
- Division of Systems Immunology, The Institute of Medical Science, University of Tokyo, Shirokanedai, Minato-ku, Tokyo, Japan
| | - Yasumasa Kimura
- Division of Systems Immunology, The Institute of Medical Science, University of Tokyo, Shirokanedai, Minato-ku, Tokyo, Japan
| | - Makoto Kurachi
- Department of Microbiology and Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Osamu Nureki
- Department of Biological Sciences, Graduate School of Science, University of Tokyo, Yayoi, Bunkyo-ku, Tokyo, Japan
| | - Kenta Nakai
- Human Genome Center, The Institute of Medical Science, University of Tokyo, Shirokanedai, Minato-ku, Tokyo, Japan
| | - Hiroshi Kiyono
- International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, University of Tokyo, Shirokanedai, Minato-ku, Tokyo, Japan.,Division of Mucosal Immunology, The Institute of Medical Science, University of Tokyo, Shirokanedai, Minato-ku, Tokyo, Japan.,Department of Immunology, Graduate School of Medicine, Chiba University, Inohana, Chuo-ku, Chiba, Japan
| | - Satoshi Uematsu
- Department of Mucosal Immunology, School of Medicine, Chiba University, Inohana, Chuo-ku, Chiba, Japan.,Division of Innate Immune Regulation, International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, University of Tokyo, Shirokanedai, Minato-ku, Tokyo, Japan
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18
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Takemura N, Aoki T, Hasegawa K, Kaneko J, Arita J, Akamatsu N, Makuuchi M, Kokudo N. Hepatectomy for hepatocellular carcinoma after perioperative management of portal hypertension. Br J Surg 2019; 106:1066-1074. [DOI: 10.1002/bjs.11153] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 01/24/2019] [Accepted: 02/06/2019] [Indexed: 01/27/2023]
Abstract
Abstract
Background
Indications for hepatectomy in patients with hepatocellular carcinoma (HCC) who have portal hypertension (PH) have been controversial. Some studies have concluded that PH is a contraindication to hepatectomy, whereas others have suggested that perioperative prophylactic management (PPM) can help overcome complications after hepatectomy associated with PH. The objective of this retrospective study was to assess the short- and long-term outcomes after hepatectomy for HCC in patients with PH, with or without PPM.
Methods
Records were reviewed of consecutive patients who underwent hepatectomy for HCC, with or without PPM of PH, in a single institution from 1994 to 2015. Patients were divided into three groups: those who received PPM for PH (PPM group), patients who had PH but did not receive PPM (no-PPM group) and those without PH (no-PH group).
Results
A total of 1259 patients were enrolled, including 123 in the PPM group, 181 in the no-PPM group and 955 in the no-PH group. Three- and 5-year overall survival rates were 74·3 and 53·1 per cent respectively in the PPM group, 69·2 and 54·9 per cent in the no-PPM group, and 78·1 and 64·2 per cent in the no-PH group (P = 0·520 for PPM versus no PPM, P = 0·027 for PPM versus no PH, and P < 0·001 for no PPM versus no PH). Postoperative morbidity and mortality rates were 26·0 and 0·8 per cent respectively in the PPM group, 29·8 and 1·1 per cent in the no-PPM group, and 20·3 and 0 per cent in the no-PH group.
Conclusion
The present study has demonstrated acceptable outcomes among patients with HCC who received appropriate management for PH in an Asian population. Enhancement of the safety of hepatic resection through use of PPM may provide a rationale for expansion of indications for hepatectomy in patients with PH.
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Affiliation(s)
- N Takemura
- Department of Surgery, Hepato-Biliary-Pancreatic Surgery Division, Artificial Organ and Transplantation Division, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
- National Centre for Global Health and Medicine, Tokyo, Japan
| | - T Aoki
- Department of Surgery, Hepato-Biliary-Pancreatic Surgery Division, Artificial Organ and Transplantation Division, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - K Hasegawa
- Department of Surgery, Hepato-Biliary-Pancreatic Surgery Division, Artificial Organ and Transplantation Division, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - J Kaneko
- Department of Surgery, Hepato-Biliary-Pancreatic Surgery Division, Artificial Organ and Transplantation Division, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - J Arita
- Department of Surgery, Hepato-Biliary-Pancreatic Surgery Division, Artificial Organ and Transplantation Division, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - N Akamatsu
- Department of Surgery, Hepato-Biliary-Pancreatic Surgery Division, Artificial Organ and Transplantation Division, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | | | - N Kokudo
- National Centre for Global Health and Medicine, Tokyo, Japan
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19
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Exposito MJ, Akce M, Alvarez J, Assenat E, Balart L, Baron A, Decaens T, Heurgue-Berlot A, Martin A, Paik S, Poulart V, Sehbai A, Shimada M, Takemura N, Yoon J. Abstract No. 526 CheckMate-9DX: phase 3, randomized, double-blind study of adjuvant nivolumab vs placebo for patients with hepatocellular carcinoma (HCC) at high risk of recurrence after curative resection or ablation. J Vasc Interv Radiol 2019. [DOI: 10.1016/j.jvir.2018.12.607] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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20
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Navadeh-Toupchi M, Takemura N, Anderson MD, Oberli DY, Portella-Oberli MT. Polaritonic Cross Feshbach Resonance. Phys Rev Lett 2019; 122:047402. [PMID: 30768331 DOI: 10.1103/physrevlett.122.047402] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 10/22/2018] [Indexed: 06/09/2023]
Abstract
We demonstrate the existence of a cross Feshbach resonance by strongly driving a lower polariton mode and by monitoring in time the transmission of a short optical pulse at the energy of the upper polariton mode in a semiconductor microcavity. From the signatures of the optical resonance, strength, and sign of the energy shift, we attribute the origin of the scattering process between polariton modes with opposite circular polarization to a biexciton bound state. From this study, we infer the conditions required for a strong enhancement of the generation of entangled photon pairs.
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Affiliation(s)
- M Navadeh-Toupchi
- Institute of Physics, School of Basic Sciences, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - N Takemura
- Institute of Physics, School of Basic Sciences, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - M D Anderson
- Institute of Physics, School of Basic Sciences, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - D Y Oberli
- Institute of Physics, School of Basic Sciences, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - M T Portella-Oberli
- Institute of Physics, School of Basic Sciences, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
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21
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Jimenez Exposito M, Akce M, Alvarez J, Assenat E, Balart L, Baron A, Decaens T, Heurgue-Berlot A, Martin A, Paik S, Poulart V, Sehbai A, Shimada M, Takemura N, Yoon JH. CA209-9DX: Phase III, randomized, double-blind study of adjuvant nivolumab vs placebo for patients with hepatocellular carcinoma (HCC) at high risk of recurrence after curative resection or ablation. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy432.059] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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22
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Jimenez Exposito M, Akce M, Montero Alvarez J, Assenat E, Balart L, Baron A, Decaens T, Heurgue-Berlot A, Martin A, Paik S, Poulart V, Sehbai A, Takemura N, Yoon JH. CA209-9DX: phase III, randomized, double-blind study of adjuvant nivolumab vs placebo for patients with hepatocellular carcinoma (HCC) at high risk of recurrence after curative resection or ablation. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy282.166] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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23
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Konta M, Nagakawa M, Sakatani A, Akabane R, Miyagawa Y, Takemura N. Evaluation of the inhibitory effects of telmisartan on drug-induced renin-angiotensin-aldosterone system activation in normal dogs. J Vet Cardiol 2018; 20:376-383. [PMID: 30126722 DOI: 10.1016/j.jvc.2018.07.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 07/20/2018] [Accepted: 07/23/2018] [Indexed: 01/06/2023]
Abstract
INTRODUCTION This study examined whether the angiotensin II receptor blocker telmisartan had inhibitory effects on drug-induced renin-angiotensin-aldosterone system (RAAS) activation in normal dogs. ANIMALS Five healthy laboratory beagles were used in this study. METHODS Each dog received amlodipine (0.5 mg/kg, q12h, PO) alone for 14 days. Starting on the next day, animals received both amlodipine and telmisartan (1.0 mg/kg, q24h, PO) for 84 days. Systolic blood pressure, heart rate, plasma biochemical variables (blood urea nitrogen, creatinine, and electrolytes), plasma renin activity, and 24-h urinary aldosterone elimination (U-Aldo) were measured before amlodipine administration; at day 0; and at days 1, 7, 14, 28, 56, and 84 of telmisartan treatment. RESULTS Telmisartan was associated with significant decreases in systolic blood pressure on day 56 (p=0.046), whereas heart rate did not significantly change during this treatment (p=0.061). Plasma renin activity was significantly increased on days 1, 7, 28, 56, and 84 during telmisartan administration (all p=0.04). No change in median U-Aldo was detected following telmisartan administration (p=0.241). When U-Aldo was evaluated in individual animals, two dogs displayed evidence of aldosterone breakthrough. CONCLUSIONS Telmisartan administration did not suppress RAAS activation. The appearance of aldosterone breakthrough supports the incomplete blockade of RAAS activation.
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Affiliation(s)
- M Konta
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | - M Nagakawa
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | - A Sakatani
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan.
| | - R Akabane
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | - Y Miyagawa
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | - N Takemura
- Laboratory of Veterinary Internal Medicine II, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
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24
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Maruyama K, Takayama Y, Sugisawa E, Yamanoi Y, Yokawa T, Kondo T, Ishibashi KI, Sahoo BR, Takemura N, Mori Y, Kanemaru H, Kumagai Y, Martino MM, Yoshioka Y, Nishijo H, Tanaka H, Sasaki A, Ohno N, Iwakura Y, Moriyama Y, Nomura M, Akira S, Tominaga M. The ATP Transporter VNUT Mediates Induction of Dectin-1-Triggered Candida Nociception. iScience 2018; 6:306-318. [PMID: 30240621 PMCID: PMC6137711 DOI: 10.1016/j.isci.2018.08.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Revised: 07/09/2018] [Accepted: 08/09/2018] [Indexed: 12/02/2022] Open
Abstract
Candida albicans infection can cause skin, vulvar, or oral pain. Despite the obvious algesic activity of C. albicans, the molecular mechanisms of fungal nociception remain largely unknown. Here we show that the C. albicans-specific signaling pathway led to severe mechanical allodynia. We discovered that C. albicans-derived β-glucan stimulated nociceptors depending on Dectin-1, and two pathways in inflammatory pain. The major pathway operates via the Dectin-1-mediated ATP-P2X3/P2X2/3 axis through intercellular relationships between keratinocytes and primary sensory neurons, which depends on the ATP transporter vesicular nucleotide transporter (VNUT). The other pathway operates via the Dectin-1-mediated PLC-TRPV1/TRPA1 axis in primary sensory neurons. Intriguingly, C. albicans-derived β-glucan has the ability to enhance histamine-independent pruritus, and VNUT inhibitor clodronate can be used to treat unpleasant feelings induced by β-glucan. Collectively, this is the first report to indicate that Dectin-1 and VNUT mediated innate sensory mechanisms that detect fungal infection. β-Glucan-induced pain is abolished in Dectin-1- and TRPV1/TRPA1-deficient mice β-–Glucan stimulates nociceptors via Dectin-1-PLC axis, activating neurons β-Glucan-induced allodynia is dependent on extracellular ATP and VNUT VNUT inhibitor clodronate can be used to treat β-glucan-induced allodynia
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Affiliation(s)
- Kenta Maruyama
- Laboratory of Host Defense, Osaka University, Osaka 565-0871, Japan; WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan.
| | - Yasunori Takayama
- Thermal Biology group, Exploratory Research Center on Life and Living Systems National Institutes of Natural Sciences, Okazaki Aichi 444-8787, Japan; Division of Cell Signaling, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Okazaki, Aichi 444-8787, Japan; Department of Physiological Sciences, the Graduate University for Advanced Studies, Aichi 444-8787, Japan
| | - Erika Sugisawa
- Laboratory of Host Defense, Osaka University, Osaka 565-0871, Japan; WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan
| | - Yu Yamanoi
- Thermal Biology group, Exploratory Research Center on Life and Living Systems National Institutes of Natural Sciences, Okazaki Aichi 444-8787, Japan; Division of Cell Signaling, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Okazaki, Aichi 444-8787, Japan; Department of Physiological Sciences, the Graduate University for Advanced Studies, Aichi 444-8787, Japan; Research Laboratory, Ikedamohando Co., Ltd., 2-16-16 Iwamoto-cho, Chiyoda-ku, Tokyo 101-0032, Japan
| | - Takashi Yokawa
- BioView Corporation, 2-16-16 Iwamoto-cho, Chiyoda-ku, Tokyo 101-0032, Japan
| | - Takeshi Kondo
- Laboratory of Host Defense, Osaka University, Osaka 565-0871, Japan; WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan
| | - Ken-Ichi Ishibashi
- Laboratory for Immunopharmacology of Microbial Products, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Bikash Ranjan Sahoo
- Laboratory of Host Defense, Osaka University, Osaka 565-0871, Japan; WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan
| | - Naoki Takemura
- Department of Mucosal Immunology, School of Medicine, Chiba University, 1-8-1 Inohana, Chuou-ku, Chiba 260-8670, Japan
| | - Yuki Mori
- Laboratory of Biofunctional Imaging, Osaka University, Osaka 565-0871, Japan; WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan
| | - Hisashi Kanemaru
- Laboratory of Host Defense, Osaka University, Osaka 565-0871, Japan; WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan
| | - Yutaro Kumagai
- Laboratory of Host Defense, Osaka University, Osaka 565-0871, Japan; WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan; Biotechnology Research Institute for Drug Discovery National Institute of Advanced Industrial Science and Technology Central 5-41, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Mikaël M Martino
- Laboratory of Host Defense, Osaka University, Osaka 565-0871, Japan; WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan; European Molecular Biology Laboratory Australia, Australian Regenerative Medicine Institute, Innovation Walk, Monash University, Wellington Road, Clayton, VIC 3800, Australia
| | - Yoshichika Yoshioka
- Laboratory of Biofunctional Imaging, Osaka University, Osaka 565-0871, Japan; WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan
| | - Hisao Nishijo
- System Emotional Science (Physiology), Graduate School of Medicine and Pharmaceutical Sciences for Research, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Hiroki Tanaka
- Laboratory of Host Defense, Osaka University, Osaka 565-0871, Japan; WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan
| | - Atsushi Sasaki
- Research Unit/Neuroscience Sohyaku, Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, 1000, Kamoshida-cho, Aoba-ku, Yokohama 227-0033, Japan
| | - Naohito Ohno
- Laboratory for Immunopharmacology of Microbial Products, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Yoichiro Iwakura
- Research Institute for Biomedical Sciences, Tokyo University of Science, 2669 Yamazaki, Noda, Chiba 278-0022, Japan
| | - Yoshinori Moriyama
- Department of Membrane Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8530, Japan
| | - Masatoshi Nomura
- Department of Medicine and Bioregulatory Science, Kyushu University, Fukuoka 812-8582, Japan
| | - Shizuo Akira
- Laboratory of Host Defense, Osaka University, Osaka 565-0871, Japan; WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan
| | - Makoto Tominaga
- Thermal Biology group, Exploratory Research Center on Life and Living Systems National Institutes of Natural Sciences, Okazaki Aichi 444-8787, Japan; Division of Cell Signaling, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Okazaki, Aichi 444-8787, Japan; Department of Physiological Sciences, the Graduate University for Advanced Studies, Aichi 444-8787, Japan; Institute for Environmental and Gender Specific Medicine, Juntendo University, 2-1-1 Tomioka, Urayasu, Chiba 279-0021, Japan.
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Akabane R, Sato T, Sakatani A, Miyagawa Y, Tazaki H, Takemura N. Pharmacokinetics of single-dose sildenafil administered orally in clinically healthy dogs: Effect of feeding and dose proportionality. J Vet Pharmacol Ther 2018; 41:457-462. [DOI: 10.1111/jvp.12487] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 01/02/2018] [Indexed: 12/01/2022]
Affiliation(s)
- R. Akabane
- Laboratory of Veterinary Internal Medicine II; School of Veterinary Medicine; Nippon Veterinary and Life Science University; Musashino-shi Japan
| | - T. Sato
- Laboratory of Biomolecular Chemistry; School of Veterinary Medicine; Nippon Veterinary and Life Science University; Musashino-shi Japan
| | - A. Sakatani
- Laboratory of Veterinary Internal Medicine II; School of Veterinary Medicine; Nippon Veterinary and Life Science University; Musashino-shi Japan
| | - Y. Miyagawa
- Laboratory of Veterinary Internal Medicine II; School of Veterinary Medicine; Nippon Veterinary and Life Science University; Musashino-shi Japan
| | - H. Tazaki
- Laboratory of Biomolecular Chemistry; School of Veterinary Medicine; Nippon Veterinary and Life Science University; Musashino-shi Japan
| | - N. Takemura
- Laboratory of Veterinary Internal Medicine II; School of Veterinary Medicine; Nippon Veterinary and Life Science University; Musashino-shi Japan
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Koyanagi N, Imai T, Shindo K, Sato A, Fujii W, Ichinohe T, Takemura N, Kakuta S, Uematsu S, Kiyono H, Maruzuru Y, Arii J, Kato A, Kawaguchi Y. Herpes simplex virus-1 evasion of CD8+ T cell accumulation contributes to viral encephalitis. J Clin Invest 2017; 127:3784-3795. [PMID: 28891812 DOI: 10.1172/jci92931] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 07/26/2017] [Indexed: 01/18/2023] Open
Abstract
Herpes simplex virus-1 (HSV-1) is the most common cause of sporadic viral encephalitis, which can be lethal or result in severe neurological defects even with antiviral therapy. While HSV-1 causes encephalitis in spite of HSV-1-specific humoral and cellular immunity, the mechanism by which HSV-1 evades the immune system in the central nervous system (CNS) remains unknown. Here we describe a strategy by which HSV-1 avoids immune targeting in the CNS. The HSV-1 UL13 kinase promotes evasion of HSV-1-specific CD8+ T cell accumulation in infection sites by downregulating expression of the CD8+ T cell attractant chemokine CXCL9 in the CNS of infected mice, leading to increased HSV-1 mortality due to encephalitis. Direct injection of CXCL9 into the CNS infection site enhanced HSV-1-specific CD8+ T cell accumulation, leading to marked improvements in the survival of infected mice. This previously uncharacterized strategy for HSV-1 evasion of CD8+ T cell accumulation in the CNS has important implications for understanding the pathogenesis and clinical treatment of HSV-1 encephalitis.
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Affiliation(s)
- Naoto Koyanagi
- Division of Molecular Virology, Department of Microbiology and Immunology.,Department of Infectious Disease Control, International Research Center for Infectious Diseases, and
| | - Takahiko Imai
- Division of Molecular Virology, Department of Microbiology and Immunology.,Department of Infectious Disease Control, International Research Center for Infectious Diseases, and
| | - Keiko Shindo
- Division of Molecular Virology, Department of Microbiology and Immunology.,Department of Infectious Disease Control, International Research Center for Infectious Diseases, and
| | - Ayuko Sato
- Division of Mucosal Immunology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Wataru Fujii
- Department of Animal Resource Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Takeshi Ichinohe
- Department of Infectious Disease Control, International Research Center for Infectious Diseases, and
| | - Naoki Takemura
- International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.,Department of Mucosal Immunology, School of Medicine, Chiba University, Chiba, Japan
| | - Shigeru Kakuta
- Department of Biomedical Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Satoshi Uematsu
- International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.,Department of Mucosal Immunology, School of Medicine, Chiba University, Chiba, Japan
| | - Hiroshi Kiyono
- Division of Mucosal Immunology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.,International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.,Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, Tokyo, Japan
| | - Yuhei Maruzuru
- Division of Molecular Virology, Department of Microbiology and Immunology.,Department of Infectious Disease Control, International Research Center for Infectious Diseases, and
| | - Jun Arii
- Division of Molecular Virology, Department of Microbiology and Immunology.,Department of Infectious Disease Control, International Research Center for Infectious Diseases, and
| | - Akihisa Kato
- Division of Molecular Virology, Department of Microbiology and Immunology.,Department of Infectious Disease Control, International Research Center for Infectious Diseases, and
| | - Yasushi Kawaguchi
- Division of Molecular Virology, Department of Microbiology and Immunology.,Department of Infectious Disease Control, International Research Center for Infectious Diseases, and
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27
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Maruyama K, Takayama Y, Kondo T, Ishibashi KI, Sahoo BR, Kanemaru H, Kumagai Y, Martino MM, Tanaka H, Ohno N, Iwakura Y, Takemura N, Tominaga M, Akira S. Nociceptors Boost the Resolution of Fungal Osteoinflammation via the TRP Channel-CGRP-Jdp2 Axis. Cell Rep 2017; 19:2730-2742. [DOI: 10.1016/j.celrep.2017.06.002] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Revised: 04/11/2017] [Accepted: 05/25/2017] [Indexed: 12/29/2022] Open
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28
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Maruyama K, Takemura N, Martino MM, Kondo T, Akira S. Netrins as prophylactic targets in skeletal diseases: A double-edged sword? Pharmacol Res 2017; 122:46-52. [PMID: 28576474 DOI: 10.1016/j.phrs.2017.05.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 03/09/2017] [Revised: 05/11/2017] [Accepted: 05/11/2017] [Indexed: 12/31/2022]
Abstract
The netrin family of proteins are involved in axon guidance during central nervous system development. In vertebrates, two membrane bound forms and five secreted forms of netrin have been reported. In addition to their critical role in neural morphogenesis, a growing number of reports suggest that netrin family proteins also play a role in inflammatory conditions, angiogenesis, and tumorigenesis. In these processes, Unc5 and DCC family proteins serve as receptors of netrin proteins. Recently, it was reported that some netrin family proteins may be involved in the pathogenesis of skeletal diseases including osteoporosis and arthritis. For example, administration of secreted netrin family proteins such as netrin 1 and netrin 4 has prophylactic potential in pathogenic bone degradation in mice. However, netrin 1 blocking antibody also protects mice from inflammatory bone destruction. Therefore, netrin family proteins are involved in the regulation of bone homeostasis, but their bona fide roles in the skeletal system remain controversial. In this review, we discuss the osteo-innate-immune functions of the netrin family of proteins, and summarize their therapeutic potential.
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Affiliation(s)
- Kenta Maruyama
- Laboratory of Host Defense Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan, Japan; WPI Immunology Frontier Research Center (IFReC), 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan; Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan.
| | - Naoki Takemura
- Department of Mucosal Immunology, School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan; Division of Innate Immune Regulation, International Research and Development Center for Mucosal Vaccines, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo, 108-8639, Japan
| | - Mikaël M Martino
- European Molecular Biology Laboratory Australia, Australian Regenerative Medicine Institute, Monash University, Victoria, 3800, Australia
| | - Takeshi Kondo
- Laboratory of Host Defense Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan, Japan; WPI Immunology Frontier Research Center (IFReC), 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Shizuo Akira
- Laboratory of Host Defense Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan, Japan; WPI Immunology Frontier Research Center (IFReC), 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan; Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
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Kawahara T, Murakami S, Noiri Y, Ehara A, Takemura N, Furukawa S, Ebisu S. Effects of Cyclosporin-A-induced Immunosuppression on Periapical Lesions in Rats. J Dent Res 2016; 83:683-7. [PMID: 15329372 DOI: 10.1177/154405910408300905] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Cyclosporin A (CsA) might induce immune response alterations in periapical lesions and modify bone remodeling. This study determined the changes that occur in the periapical lesions of rats during CsA administration and after CsA withdrawal. After the induction of periapical lesions, the animals were treated with CsA (0–20 mg/kg/day) for 4 wks. Lesion volumes were measured by computed tomography. Histological observations and immunohistochemical evaluations were performed with anti-CD3 and anti-CD25 antibodies. CsA administration reduced lesion volumes, and the lesions significantly expanded after CsA withdrawal. CsA inhibited the proliferation and activation of T-cells at lesion sites. The effects of CsA on T-cells were dose-dependent up to 10 mg/kg/day, after which no significant difference was evident. These results suggest that CsA inhibits periapical destruction by interfering with T-cell function in periapical lesions.
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Affiliation(s)
- T Kawahara
- Department of Restorative Dentistry, Osaka University Graduate School of Dentistry, Yamadaoka, Suita, Japan
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30
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Maruyama K, Kawasaki T, Hamaguchi M, Hashimoto M, Furu M, Ito H, Fujii T, Takemura N, Karuppuchamy T, Kondo T, Kawasaki T, Fukasaka M, Misawa T, Saitoh T, Suzuki Y, Martino MM, Kumagai Y, Akira S. Bone-protective Functions of Netrin 1 Protein. J Biol Chem 2016; 291:23854-23868. [PMID: 27681594 DOI: 10.1074/jbc.m116.738518] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 09/16/2016] [Indexed: 12/27/2022] Open
Abstract
Netrin 1 was initially identified as an axon guidance factor, and recent studies indicate that it inhibits chemokine-directed monocyte migration. Despite its importance as a neuroimmune guidance cue, the role of netrin 1 in osteoclasts is largely unknown. Here we detected high netrin 1 levels in the synovial fluid of rheumatoid arthritis patients. Netrin 1 is potently expressed in osteoblasts and synovial fibroblasts, and IL-17 robustly enhances netrin 1 expression in these cells. The binding of netrin 1 to its receptor UNC5b on osteoclasts resulted in activation of SHP1, which inhibited VAV3 phosphorylation and RAC1 activation. This significantly impaired the actin polymerization and fusion, but not the differentiation of osteoclast. Strikingly, netrin 1 treatment prevented bone erosion in an autoimmune arthritis model and age-related bone destruction. Therefore, the netrin 1-UNC5b axis is a novel therapeutic target for bone-destructive diseases.
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Affiliation(s)
| | - Takahiko Kawasaki
- the Division of Brain Function, National Institute of Genetics, 1111 Yata, Mishima 411-8540, Japan
| | - Masahide Hamaguchi
- Experimental Immunology, World Premier Institute (WPI) Immunology Frontier Research Center (IFReC) and
| | - Motomu Hashimoto
- the Department of the Control for Rheumatic Diseases, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan
| | - Moritoshi Furu
- the Department of the Control for Rheumatic Diseases, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan
| | - Hiromu Ito
- the Department of the Control for Rheumatic Diseases, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan
| | - Takao Fujii
- the Department of the Control for Rheumatic Diseases, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan
| | - Naoki Takemura
- the Division of Innate Immune Regulation, International Research and Development Center for Mucosal Vaccine, Institute for Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | | | | | | | | | | | - Tatsuya Saitoh
- From the Laboratories of Host Defense and.,the Department of Inflammation Biology, Institute for Enzyme Research, Tokushima University, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan
| | - Yutaka Suzuki
- the Departments of Functional Genomics and Medical Genome Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8562, Japan, and
| | - Mikaël M Martino
- From the Laboratories of Host Defense and.,the European Molecular Biology Laboratory, Australian Regenerative Medicine Institute, Monash University, Victoria 3800, Australia
| | | | - Shizuo Akira
- From the Laboratories of Host Defense and .,the Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
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31
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Abstract
Background: Relatively little is known about the risk factors and treatments for postpancreatectomy hepatic steatosis. Methods: The records of patients who underwent pancreaticoduodenectomy or total pancreatectomy between 2005 and 2010 and were followed up by periodic imaging were reviewed retrospectively. Risk factors and treatment for postpancreatectomy hepatic steatosis were analyzed. Results: A total of 253 patients were included in the analysis, including 137 males and 116 females, of median (5, 95 percentile) age 67 (47, 81) years. Of these 253 patients, 75 (29.6%) developed postpancreatectomy hepatic steatosis. Multivariable logistic regression analysis showed that female gender ( p = 0.005; odds ratio: 2.387; 95% confidence interval: 1.293–4.386), body mass index > 22.5 kg/m2 ( p = 0.007; odds ratio: 2.330; 95% confidence interval: 1.261–4.307), operative duration > 540 min ( p = 0.018; odds ratio: 2.286; 95% confidence interval: 1.153–4.533), and delayed gastric emptying ( p < 0.001; odds ratio: 4.598; 95% confidence interval: 1.979–10.678) were independent risk factors associated with postpancreatectomy hepatic steatosis. Treatment consisted of maintenance- or high-dose digestive enzyme replacement therapy. Of patients without obvious tumor recurrence after 6 months, 12 of 15 treated with high dose and only 6 of 35 treated with maintenance-dose digestive enzyme replacement therapy showed improvements in postpancreatectomy hepatic steatosis ( p = 0.006). Conclusion: Female gender, obesity, longer operative time, and occurrence of delayed gastric emptying are risk factors for postpancreatectomy hepatic steatosis. High-dose digestive enzyme replacement therapy may improve postpancreatectomy hepatic steatosis.
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Affiliation(s)
- N. Takemura
- Department of Gastroenterological Surgery, Cancer Institute Ariake Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - A. Saiura
- Department of Gastroenterological Surgery, Cancer Institute Ariake Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - R. Koga
- Department of Gastroenterological Surgery, Cancer Institute Ariake Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - J. Yamamoto
- Department of Surgery, National Defense Medical College, Saitama, Japan
| | - T. Yamaguchi
- Department of Gastroenterological Surgery, Cancer Institute Ariake Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
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32
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Sakatani K, Fujii M, Takemura N, Hirayama T. Effects of Acupuncture on Anxiety Levels and Prefrontal Cortex Activity Measured by Near-Infrared Spectroscopy: A Pilot Study. Advances in Experimental Medicine and Biology 2016; 876:297-302. [DOI: 10.1007/978-1-4939-3023-4_37] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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33
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Takemura N, Hasegawa K, Aoki T, Sakamoto Y, Sugawara Y, Makuuchi M, Kokudo N. Surgical resection of peritoneal or thoracoabdominal wall implants from hepatocellular carcinoma. Br J Surg 2014; 101:1017-22. [PMID: 24828028 DOI: 10.1002/bjs.9489] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2014] [Indexed: 12/24/2022]
Abstract
BACKGROUND Peritoneal or thoracoabdominal wall implants from hepatocellular carcinoma (HCC) occur occasionally after biopsy, percutaneous therapy or resection, and spontaneously, with no effective treatment available. The objective of this study was to clarify the indications for, and benefits of, surgical resection of such HCC implants. METHODS This was a retrospective analysis of patients who underwent resection for peritoneal or chest wall implants from HCC over 14 years (1997-2011). Indications for surgery for implanted HCC were: limited number of implanted lesions including those found incidentally during surgery; intrahepatic lesion absent or predicted to be locally controllable; and absence of ascites with sufficient hepatic functional reserve. Prognostic factors affecting survival after resection were determined by univariable and multivariable analysis. RESULTS A total of 32 patients underwent 36 resections. Cumulative 1-, 3- and 5-year overall survival rates were 71, 44 and 39 per cent respectively, with a median survival time of 34.5 months. Univariable and multivariable analysis revealed that poor perioperative intrahepatic disease control was associated with poor survival. CONCLUSION Surgical resection of implanted HCC may improve long-term survival in selected patients as long as intrahepatic disease is absent or well controlled.
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Affiliation(s)
- N Takemura
- Hepato-Biliary-Pancreatic Surgery Division, Department of Surgery, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
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34
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Takemura N, Kawasaki T, Kunisawa J, Sato S, Lamichhane A, Kobiyama K, Aoshi T, Ito J, Mizuguchi K, Karuppuchamy T, Matsunaga K, Miyatake S, Mori N, Tsujimura T, Satoh T, Kumagai Y, Kawai T, Standley DM, Ishii KJ, Kiyono H, Akira S, Uematsu S. Blockade of TLR3 protects mice from lethal radiation-induced gastrointestinal syndrome. Nat Commun 2014; 5:3492. [PMID: 24637670 PMCID: PMC3959210 DOI: 10.1038/ncomms4492] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2013] [Accepted: 02/24/2014] [Indexed: 12/23/2022] Open
Abstract
High-dose ionizing radiation induces severe DNA damage in the epithelial stem cells in small intestinal crypts and causes gastrointestinal syndrome (GIS). Although the tumour suppressor p53 is a primary factor inducing death of crypt cells with DNA damage, its essential role in maintaining genome stability means inhibiting p53 to prevent GIS is not a viable strategy. Here we show that the innate immune receptor Toll-like receptor 3 (TLR3) is critical for the pathogenesis of GIS. Tlr3−/− mice show substantial resistance to GIS owing to significantly reduced radiation-induced crypt cell death. Despite showing reduced crypt cell death, p53-dependent crypt cell death is not impaired in Tlr3−/− mice. p53-dependent crypt cell death causes leakage of cellular RNA, which induces extensive cell death via TLR3. An inhibitor of TLR3–RNA binding ameliorates GIS by reducing crypt cell death. Thus, we propose blocking TLR3 activation as a novel approach to treat GIS. Ionizing radiation damages small intestinal crypt cells, including epithelial stem cells and their progeny. Here the authors show that radiation-induced crypt cell death is amplified by the release of cellular RNA from apoptotic epithelial cells, which then triggers pro-apoptotic TLR3 signalling on neighbouring cells.
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Affiliation(s)
- Naoki Takemura
- Division of Innate Immune Regulation, International Research and Development Center for Mucosal Vaccines, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Takumi Kawasaki
- 1] Laboratory of Host Defense, WPI Immunology Frontier Research Center, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan [2] Department of Host Defense, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan [3] Laboratory of Molecular Immunobiology, Graduate School of Biological Sciences, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Jun Kunisawa
- 1] Division of Mucosal Immunology, Department of Microbiology and Immunology, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan [2] Laboratory of Vaccine Materials, National Institute of Biomedical Innovation, 7-6-8 Asagi Saito, Ibaraki, Osaka 567-0085, Japan
| | - Shintaro Sato
- 1] Division of Mucosal Immunology, Department of Microbiology and Immunology, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan [2] Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, 5 Sanbancho, Chiyoda-ku, Tokyo 102-0075, Japan
| | - Aayam Lamichhane
- Division of Mucosal Immunology, Department of Microbiology and Immunology, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Kouji Kobiyama
- 1] Laboratory of Adjuvant Innovation, National Institute of Biomedical Innovation, 7-6-8 Asagi Saito, Ibaraki, Osaka 567-0085, Japan [2] Laboratory of Vaccine Science, WPI Immunology Frontier Research Center, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Taiki Aoshi
- 1] Laboratory of Adjuvant Innovation, National Institute of Biomedical Innovation, 7-6-8 Asagi Saito, Ibaraki, Osaka 567-0085, Japan [2] Laboratory of Vaccine Science, WPI Immunology Frontier Research Center, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Junichi Ito
- Laboratory of Bioinformatics, National Institute of Biomedical Innovation, 7-6-8 Asagi Saito, Ibaraki, Osaka 567-0085, Japan
| | - Kenji Mizuguchi
- Laboratory of Bioinformatics, National Institute of Biomedical Innovation, 7-6-8 Asagi Saito, Ibaraki, Osaka 567-0085, Japan
| | - Thangaraj Karuppuchamy
- 1] Laboratory of Host Defense, WPI Immunology Frontier Research Center, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan [2] Department of Host Defense, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Kouta Matsunaga
- Division of Innate Immune Regulation, International Research and Development Center for Mucosal Vaccines, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Shoichiro Miyatake
- Laboratory of Self Defense Gene Regulation, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo 156-8506, Japan
| | - Nobuko Mori
- Department of Biological Science, Graduate School of Science, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8570, Japan
| | - Tohru Tsujimura
- Department of Pathology, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo 663-8501, Japan
| | - Takashi Satoh
- 1] Laboratory of Host Defense, WPI Immunology Frontier Research Center, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan [2] Department of Host Defense, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Yutaro Kumagai
- 1] Laboratory of Host Defense, WPI Immunology Frontier Research Center, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan [2] Department of Host Defense, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Taro Kawai
- Laboratory of Molecular Immunobiology, Graduate School of Biological Sciences, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Daron M Standley
- Laboratory of Systems Immunology, WPI Immunology Frontier Research Center, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Ken J Ishii
- 1] Laboratory of Adjuvant Innovation, National Institute of Biomedical Innovation, 7-6-8 Asagi Saito, Ibaraki, Osaka 567-0085, Japan [2] Laboratory of Vaccine Science, WPI Immunology Frontier Research Center, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Hiroshi Kiyono
- 1] Division of Mucosal Immunology, Department of Microbiology and Immunology, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan [2] Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, 5 Sanbancho, Chiyoda-ku, Tokyo 102-0075, Japan
| | - Shizuo Akira
- 1] Laboratory of Host Defense, WPI Immunology Frontier Research Center, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan [2] Department of Host Defense, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Satoshi Uematsu
- Division of Innate Immune Regulation, International Research and Development Center for Mucosal Vaccines, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
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35
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Kawasaki T, Takemura N, Standley DM, Akira S, Kawai T. The second messenger phosphatidylinositol-5-phosphate facilitates antiviral innate immune signaling. Cell Host Microbe 2013; 14:148-58. [PMID: 23954154 DOI: 10.1016/j.chom.2013.07.011] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [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: 01/28/2013] [Revised: 05/17/2013] [Accepted: 07/16/2013] [Indexed: 02/08/2023]
Abstract
Innate immune receptors, notably Toll-like receptors (TLRs) and RIG-I-like receptors (RLRs), sense viral infection and activate transcription factors, including interferon regulatory factor-3 (IRF3), to induce type I interferon (IFN). We demonstrate that the lipid phosphatidylinositol-5-phosphate (PtdIns5P) is increased upon viral infection and facilitates type I IFN production by binding to IRF3 and its upstream kinase TBK1 and promoting TBK1-mediated IRF3 phosphorylation and activation. Additionally, we determine that PtdIns5P is produced through the kinase PIKfyve, which phosphorylates PtdIns to generate PtdIns5P. Accordingly, PIKfyve knockdown or pharamoclogical inhibition decreases PtdIns5P levels and type I IFN production after TLR or RLR stimulation, and results in increased viral replication. A synthetic PtdIns5P, C8-PtdIns5P, promotes IRF3 phosphorylation and cytokine production in dendritic cells and acts as an adjuvant to boost immune responses in immunized mice. Thus, PtdIns5P produced during viral infection is a second messenger that targets the TBK1-IRF3 axis to elicit antiviral immunity.
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Affiliation(s)
- Takumi Kawasaki
- Laboratory of Molecular Immunobiology, Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
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36
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Okubo T, Takemura N, Yoshida A, Sonoyama K. KK/Ta Mice Administered Lactobacillus plantarum Strain No. 14 Have Lower Adiposity and Higher Insulin Sensitivity. Biosci Microbiota Food Health 2013; 32:93-100. [PMID: 24936367 PMCID: PMC4034365 DOI: 10.12938/bmfh.32.93] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Accepted: 01/23/2013] [Indexed: 12/16/2022]
Abstract
Excess accumulation of white adipose tissue can lead to obesity-related metabolic
abnormalities such as insulin resistance. We previously reported that intragastric
administration of Lactobacillus plantarum No. 14 reduced adipocyte size
in diet-induced obese C57BL/6 mice. The present study tested whether L.
plantarum No. 14 affects adiposity and insulin sensitivity in an animal model
of type-2 diabetes mellitus. Male KK/Ta mice were fed a normal-fat diet and
intragastrically given L. plantarum No. 14 (108 CFU/mouse) or
vehicle daily for 10 weeks. Interscapular brown adipose tissue and inguinal, mesenteric,
and retroperitoneal white adipose tissue weights, serum leptin and insulin concentrations,
and insulin resistance index (HOMA-IR) were significantly lower in L.
plantarum No. 14-fed mice than in vehicle-fed mice. The sum of the inguinal,
epididymal, mesenteric and retroperitoneal white adipose tissue weights correlated with
serum leptin and non-esterified fatty acid concentrations and HOMA-IR. The mesenteric
adipose tissue mRNA levels of monocyte chemoattractant protein-1 and tumor necrosis
factor-α were significantly lower in L. plantarum No. 14-fed mice than in
vehicle-fed mice. Mesenteric adipose tissue weight correlated with interleukin-6, monocyte
chemoattractant protein-1, and tumor necrosis factor-α mRNA levels. HOMA-IR correlated
with monocyte chemoattractant protein-1 and tumor necrosis factor-α mRNA levels. These
data suggest that L. plantarum No. 14 prevents the development of insulin
resistance, which is at least partly attributable to the prevention of obesity, in KK/Ta
mice.
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Affiliation(s)
- Takuma Okubo
- Graduate School of Life Science, Hokkaido University, Kita-9 Nishi-9, Kita-ku, Sapporo 060-8589, Japan
| | - Naoki Takemura
- Graduate School of Life Science, Hokkaido University, Kita-9 Nishi-9, Kita-ku, Sapporo 060-8589, Japan
| | - Ayako Yoshida
- Laboratory of Food Biochemistry, Research Faculty of Agriculture, Hokkaido University, Kita-9 Nishi-9, Kita-ku, Sapporo 060-8589, Japan
| | - Kei Sonoyama
- Laboratory of Food Biochemistry, Research Faculty of Agriculture, Hokkaido University, Kita-9 Nishi-9, Kita-ku, Sapporo 060-8589, Japan
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Miyagawa Y, Tominaga Y, Toda N, Takemura N. Relationship between glomerular filtration rate and plasma N-terminal pro B-type natriuretic peptide concentrations in dogs with chronic kidney disease. Vet J 2013; 197:445-50. [PMID: 23570775 DOI: 10.1016/j.tvjl.2013.02.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2012] [Revised: 02/04/2013] [Accepted: 02/21/2013] [Indexed: 10/27/2022]
Abstract
Plasma N-terminal pro B-type natriuretic peptide (NT-proBNP) concentrations increase in dogs with azotemia. However, the correlation between glomerular filtration rate (GFR) and NT-proBNP concentrations in dogs has not been evaluated. The objective of this study was to evaluate the correlation between GFR and plasma NT-proBNP concentrations in dogs with chronic kidney disease (CKD). In this retrospective cross-sectional study, plasma creatinine (Cre) and NT-proBNP concentrations, plasma iohexol clearance (PCio) values and blood pressure were measured in dogs with CKD. Dogs were classified according to PCio values into D group (dogs with decreased PCio values), and N group (dogs with normal PCio values). Dogs were further categorized on the basis of their systolic blood pressure and PCio values into NT-D group (normotensive dogs with decreased PCio values), NT-N group (normotensive dogs with normal PCio values), HT-D group (hypertensive dogs with decreased PCio values) and HT-N group (hypertensive dogs with normal PCio values). Significant correlations were observed between plasma NT-proBNP and Cre concentrations (r=0.360, P<0.05) and PCio values (r=-0.470, P<0.01). Plasma NT-proBNP concentrations were significantly higher in the D group than in the N group (P<0.001). Plasma NT-proBNP concentrations were significantly higher in the HT-D group than in the other three groups (P ≤ 0.007). No differences in plasma NT-proBNP concentrations were observed between the NT-D and HT-N groups (P=0.28). Plasma NT-proBNP concentrations were significantly lower in the NT-N group than in the other three groups (P ≤ 0.043). Our findings suggest that decreased GFR might be associated with increased plasma NT-proBNP concentrations in dogs, similar to that in humans. In addition, the complication of hypertension in CKD might be associated with further increases in plasma NT-proBNP concentrations. In conclusion, the effects of GFR and blood pressure on the plasma NT-proBNP concentration were small, but it could be necessary to consider the effects when this marker is used to evaluate canine cardiac disease.
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Affiliation(s)
- Y Miyagawa
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, 1-7-1 Kyonan Cho, Musashino-shi, Tokyo 180-8602, Japan.
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Satoh T, Kidoya H, Naito H, Yamamoto M, Takemura N, Nakagawa K, Yoshioka Y, Morii E, Takakura N, Takeuchi O, Akira S. Critical role of Trib1 in differentiation of tissue-resident M2-like macrophages. Nature 2013; 495:524-8. [PMID: 23515163 DOI: 10.1038/nature11930] [Citation(s) in RCA: 226] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Accepted: 01/22/2013] [Indexed: 01/09/2023]
Abstract
Macrophages consist of at least two subgroups, M1 and M2 (refs 1-3). Whereas M1 macrophages are proinflammatory and have a central role in host defence against bacterial and viral infections, M2 macrophages are associated with responses to anti-inflammatory reactions, helminth infection, tissue remodelling, fibrosis and tumour progression. Trib1 is an adaptor protein involved in protein degradation by interacting with COP1 ubiquitin ligase. Genome-wide association studies in humans have implicated TRIB1 in lipid metabolism. Here we show that Trib1 is critical for the differentiation of F4/80(+)MR(+) tissue-resident macrophages--that share characteristics with M2 macrophages (which we term M2-like macrophages)--and eosinophils but not for the differentiation of M1 myeloid cells. Trib1 deficiency results in a severe reduction of M2-like macrophages in various organs, including bone marrow, spleen, lung and adipose tissues. Aberrant expression of C/EBPα in Trib1-deficient bone marrow cells is responsible for the defects in macrophage differentiation. Unexpectedly, mice lacking Trib1 in haematopoietic cells show diminished adipose tissue mass accompanied by evidence of increased lipolysis, even when fed a normal diet. Supplementation of M2-like macrophages rescues the pathophysiology, indicating that a lack of these macrophages is the cause of lipolysis. In response to a high-fat diet, mice lacking Trib1 in haematopoietic cells develop hypertriglyceridaemia and insulin resistance, together with increased proinflammatory cytokine gene induction. Collectively, these results demonstrate that Trib1 is critical for adipose tissue maintenance and suppression of metabolic disorders by controlling the differentiation of tissue-resident M2-like macrophages.
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Affiliation(s)
- Takashi Satoh
- Laboratory of Host Defense, WPI Immunology Frontier Research Center, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
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Hino S, Takemura N, Sonoyama K, Morita A, Kawagishi H, Aoe S, Morita T. Small intestinal goblet cell proliferation induced by ingestion of soluble and insoluble dietary fiber is characterized by an increase in sialylated mucins in rats. J Nutr 2012; 142:1429-36. [PMID: 22718032 DOI: 10.3945/jn.112.159731] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The study aimed to examine the effects of insoluble and soluble fibers on mucin sialylation and sulfation in the small intestine. First, diets containing soluble [konjac mannan (KM), psyllium, or guar gum; 50 g/kg) or insoluble (polystyrene foam, wheat bran, or cornhusk; 80 g/kg) fiber were fed to rats for 13 d. The fiber-fed groups had more goblet cells in the ileum than the fiber-free control group. High-iron diamine/alcian blue staining showed more sialylated mucin-producing cells in the fiber-fed groups than in the control, whereas sulfated mucin-producing cells were fewer (insoluble fibers) or unchanged (soluble fibers). Second, feeding KM (50 g/kg) and beet fiber (BF) (80 g/kg) diets for 7 d yielded a higher ileum Siat4C expression than the control, but Gal3ST2 and Gal3ST4 expression was comparable. Luminal mucin content correlated with sialic acid (r = 0.96; P < 0.001) or sulfate (r = 0.62; P < 0.01), but the slope of the sialic acid-derived equation was greater than that of the sulfate-derived equation, indicating a preferred increase in sialylated mucins. Third, rats were fed the control diet for 10 d while receiving antibiotic treatment. Analysis of the luminal mucin showed that sialylated mucins were more vulnerable to bacterial degradation than sulfated mucins. Finally, a study of bromo-deoxyuridine incorporation in rats fed a BF diet indicated that goblet cell proliferation accompanied by increased sialylated mucin appeared to be related to accelerated ileal epithelial cell migration. We conclude that intestinal goblet cell responses to insoluble and soluble fibers are characterized by increases in sialylated mucin production.
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Affiliation(s)
- Shingo Hino
- Department of Applied Biological Chemistry, Faculty of Agriculture, Shizuoka University, Shizuoka, Japan
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Shibata T, Takemura N, Motoi Y, Goto Y, Karuppuchamy T, Izawa K, Li X, Akashi-Takamura S, Tanimura N, Kunisawa J, Kiyono H, Akira S, Kitamura T, Kitaura J, Uematsu S, Miyake K. PRAT4A-dependent expression of cell surface TLR5 on neutrophils, classical monocytes and dendritic cells. Int Immunol 2012; 24:613-23. [PMID: 22836022 DOI: 10.1093/intimm/dxs068] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
AbstractToll-like receptor 5 (TLR5), a sensor for bacterial flagellin, mounts innate and adaptive immune responses, and has been implicated in infectious diseases, colitis and metabolic syndromes. Although TLR5 is believed to belong to cell surface TLRs, cell surface expression has never been verified. Moreover, it has remained unclear which types of immune cells express TLR5 and contribute to flagellin-dependent responses. In this study we established an anti-mouse TLR5 monoclonal antibody and studied the cell surface expression of TLR5 on immune cells. The macrophage cell line J774 expressed endogenous TLR5 on the cell surface and produced IL-6 and G-CSF in response to flagellin. Cell surface expression of TLR5 and flagellin-induced responses were completely abolished by silencing a TLR-specific chaperone protein associated with TLR4 A (PRAT4A), demonstrating that TLR5 is another client of PRAT4A. In the in vivo immune cells, cell surface TLR5 was mainly found on neutrophils and CD11b (hi) Ly6C (hi) classical monocytes in the bone marrow, circulation, spleen and inflammatory lesions. Ly6C (hi) classical monocytes, but not neutrophils, produced cytokines in response to flagellin. Splenic CD8 (-) CD4 (+) conventional dendritic cells and CD11c (hi) CD11b (hi) lamina propria DCs, also clearly expressed cell surface TLR5. Collectively, cell surface expression of TLR5 is dependent on PRAT4A and restricted to neutrophils, classical monocytes and specific DC subsets.
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Affiliation(s)
- Takuma Shibata
- Division of Infectious Genetics, Department of Microbiology and Immunology, University of Tokyo, Minatoku, Tokyo108-8639, Japan
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Sugita R, Hata E, Miki A, Andoh R, Umeda C, Takemura N, Sonoyama K. Gut Colonization by Candida albicans Inhibits the Induction of Humoral Immune Tolerance to Dietary Antigen in BALB/c Mice. Biosci Microbiota Food Health 2012; 31:77-84. [PMID: 24936353 PMCID: PMC4034285 DOI: 10.12938/bmfh.31.77] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Accepted: 05/07/2012] [Indexed: 12/27/2022]
Abstract
We previously observed that gut colonization by Candida albicans
promoted serum antibody response to orally administered ovalbumin in mice. We therefore
postulated that C. albicans affects oral tolerance induction. The present
study tested this idea. BALB/c mice were intragastrically administered with either
C. albicans (1 × 107) or vehicle, and the colonization was
confirmed by weekly fecal cultures. Mice were further divided into two subgroups and
intragastrically administered with either ovalbumin (20 mg) or vehicle for five
consecutive days. Thereafter, all mice were intraperitoneally immunized with ovalbumin in
alum. In mice without C. albicans inoculation, ovalbumin feeding prior to
immunization significantly suppressed the increase in ovalbumin-specific IgE, IgG1 and
IgG2a in sera, suggesting oral tolerance induction. In C.
albicans-inoculated mice, however, the antibody levels were the same between
ovalbumin- and vehicle-fed mice. In contrast, ovalbumin feeding significantly suppressed
cellular immune responses, as evidenced by reduced proliferation of splenocytes
restimulated by ovalbumin ex vivo, in both C.
albicans-inoculated and uninoculated mice. Ex vivo
supplementation with neither heat-killed C. albicans nor the culture
supernatant of C. albicans enhanced the production of ovalbumin-specific
IgG1 in splenocytes restimulated by the antigen. These results suggest that gut
colonization by C. albicans inhibits the induction of humoral immune
tolerance to dietary antigen in mice, whereas C. albicans may not
directly promote antibody production. We therefore propose that C.
albicans gut colonization could be a risk factor for triggering food allergy in
susceptible individuals.
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Affiliation(s)
- Ryusuke Sugita
- Graduate School of Agriculture, Hokkaido University, Kita 9 Nishi 9, Kita-ku, Sapporo 060-8589, Japan
| | - Erina Hata
- Graduate School of Life Science, Hokkaido University, Kita 9 Nishi 9, Kita-ku, Sapporo 060-8589, Japan
| | - Atsuko Miki
- Graduate School of Life Science, Hokkaido University, Kita 9 Nishi 9, Kita-ku, Sapporo 060-8589, Japan
| | - Ryoko Andoh
- Graduate School of Agriculture, Hokkaido University, Kita 9 Nishi 9, Kita-ku, Sapporo 060-8589, Japan
| | - Chisato Umeda
- Graduate School of Agriculture, Hokkaido University, Kita 9 Nishi 9, Kita-ku, Sapporo 060-8589, Japan
| | - Naoki Takemura
- Graduate School of Agriculture, Hokkaido University, Kita 9 Nishi 9, Kita-ku, Sapporo 060-8589, Japan
| | - Kei Sonoyama
- Research Faculty of Agriculture, Hokkaido University, Kita 9 Nishi 9, Kita-ku, Sapporo 060-8589, Japan
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Ito H, Takemura N, Sonoyama K, Kawagishi H, Topping DL, Conlon MA, Morita T. Degree of polymerization of inulin-type fructans differentially affects number of lactic acid bacteria, intestinal immune functions, and immunoglobulin A secretion in the rat cecum. J Agric Food Chem 2011; 59:5771-8. [PMID: 21506616 DOI: 10.1021/jf200859z] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
This study examined the role of degree of polymerization (DP) of inulin-fructans in modulating the interaction between lactic acid bacteria and IgA cecal secretion. Rats were fed a control diet or a diet containing one of the fructans with different DP. Consuming fructans increased the cecal IgA concentrations in the order DP4 > DP8 > DP16. Cecal lactobacilli counts were higher in DP4, DP8, and DP16, whereas bifidobacteria were higher in DP8, DP16, and DP23. Cecal IgA concentrations were correlated with cecal lactobacilli counts (P < 0.01). DP4, DP8, and DP16, but not DP23, significantly increased IgA-producing plasma cells in the cecal mucosa. IFN-γ and IL-10 production in the cecal CD4(+) T cells was enhanced solely in DP4. The results show that fructans with lower DP enhance cecal IgA secretion and increase the plasma cells and suggest that the increased lactobacilli may contribute to the stimulation of cecal IgA secretion.
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Affiliation(s)
- Hiroyuki Ito
- Department of Applied Biological Chemistry, Faculty of Agriculture, Shizuoka University, Shizuoka, Japan
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Fujimoto K, Karuppuchamy T, Takemura N, Shimohigoshi M, Machida T, Haseda Y, Aoshi T, Ishii KJ, Akira S, Uematsu S. A new subset of CD103+CD8alpha+ dendritic cells in the small intestine expresses TLR3, TLR7, and TLR9 and induces Th1 response and CTL activity. J Immunol 2011; 186:6287-95. [PMID: 21525388 DOI: 10.4049/jimmunol.1004036] [Citation(s) in RCA: 121] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
CD103(+) dendritic cells (DCs) are the major conventional DC population in the intestinal lamina propria (LP). Our previous report showed that a small number of cells in the LP could be classified into four subsets based on the difference in CD11c/CD11b expression patterns: CD11c(hi)CD11b(lo) DCs, CD11c(hi)CD11b(hi) DCs, CD11c(int)CD11b(int) macrophages, and CD11c(int)CD11b(hi) eosinophils. The CD11c(hi)CD11b(hi) DCs, which are CD103(+), specifically express TLR5 and induce the differentiation of naive B cells into IgA(+) plasma cells. These DCs also mediate the differentiation of Ag-specific Th17 and Th1 cells in response to flagellin. We found that small intestine CD103(+) DCs of the LP (LPDCs) could be divided into a small subset of CD8α(+) cells and a larger subset of CD8α(-) cells. Flow cytometry analysis revealed that CD103(+)CD8α(+) and CD103(+)CD8α(-) LPDCs were equivalent to CD11c(hi)CD11b(lo) and CD11c(hi)CD11b(hi) subsets, respectively. We analyzed a novel subset of CD8α(+) LPDCs to elucidate their immunological function. CD103(+)CD8α(+) LPDCs expressed TLR3, TLR7, and TLR9 and produced IL-6 and IL-12p40, but not TNF-α, IL-10, or IL-23, following TLR ligand stimulation. CD103(+)CD8α(+) LPDCs did not express the gene encoding retinoic acid-converting enzyme Raldh2 and were not involved in T cell-independent IgA synthesis or Foxp3(+) regulatory T cell induction. Furthermore, CD103(+)CD8α(+) LPDCs induced Ag-specific IgG in serum, a Th1 response, and CTL activity in vivo. Accordingly, CD103(+)CD8α(+) LPDCs exhibit a different function from CD103(+)CD8α(-) LPDCs in active immunity. This is the first analysis, to our knowledge, of CD8α(+) DCs in the LP of the small intestine.
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Affiliation(s)
- Kosuke Fujimoto
- Laboratory of Host Defense, World Premier International Immunology Frontier Research Center, Osaka University, Osaka 565-0871, Japan
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Higuchi R, Tada H, Okaniwa H, Nakajima T, Takemura N, Fuke E, Sato C, Hayashi T, Miki Y, Sakamoto T, Fukasawa R, Kumagai K, Naito S, Oshima S. Utility and Validation of Corrected Left Ventricular Filling Time for Determining the Optimal AV Delay in Patients Receiving Cardiac Resynchronization Therapy. J Arrhythm 2011. [DOI: 10.1016/s1880-4276(11)80019-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Goto H, Takemura N, Ogasawara T, Sasajima N, Watanabe J, Ito H, Morita T, Sonoyama K. Effects of fructo-oligosaccharide on DSS-induced colitis differ in mice fed nonpurified and purified diets. J Nutr 2010; 140:2121-7. [PMID: 20943955 DOI: 10.3945/jn.110.125948] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
We investigated whether feeding a purified compared with nonpurified diet supplemented with or without fructo-oligosaccharide (FOS; 50 g/kg diet) altered the response of C57BL/6 mice to DSS-induced diarrhea. In Expt. 1, we examined disease severity in mice receiving DSS (2% in drinking water) for 5 d. In Expt. 2, we measured cecal organic acid concentrations and fecal water-holding capacity (WHC). In Expts. 3 and 4, we tested whether polycarbophil calcium (PC), a water-absorbing polymer, altered fecal WHC and disease severity. FOS exacerbated diarrhea and weight loss in mice fed the purified diet and reduced fecal bleeding in mice fed the nonpurified diet (P < 0.05). Without DSS administration, cecal acetate and butyrate concentrations were higher in mice fed the nonpurified diet than in mice fed the purified diet (P < 0.05). Fecal WHC was higher in mice fed the nonpurified diet than in mice fed the purified diet (P < 0.05). One day after starting DSS administration, cecal succinate concentrations were higher in mice fed the FOS-supplemented purified diet than in mice fed the other 3 diets, whereas SCFA concentrations were higher in mice fed the nonpurified diet than in mice fed the purified diet (P < 0.05). PC supplementation increased fecal WHC and prevented FOS exacerbation of diarrhea in mice fed the purified diet (P < 0.05). We conclude that the effects of FOS on DSS-induced diarrhea differ in mice fed the purified and nonpurified diets. The protective effect of nonpurified diet was associated with increased production of organic acids and WHC in the intestinal contents.
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Affiliation(s)
- Haruka Goto
- Graduate School of Life Science, Hokkaido University, Sapporo, Japan
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Takemura N, Hagio M, Ishizuka S, Ito H, Morita T, Sonoyama K. Inulin prolongs survival of intragastrically administered Lactobacillus plantarum No. 14 in the gut of mice fed a high-fat diet. J Nutr 2010; 140:1963-9. [PMID: 20826633 DOI: 10.3945/jn.110.128082] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
We tested whether a high-fat diet (HFD) impairs the survival of probiotics in mice. In Expt. 1, after feeding either a HFD (62.7% energy) or a normal-fat diet (NFD; 11.1% energy) for 2 d, C57BL/6 mice were i.g. administered Lactobacillus plantarum No. 14. Fecal recovery of viable L. plantarum was significantly decreased 99% by the HFD compared with the NFD. Total bile acid concentrations in the small intestine and cecum were significantly higher (1.5- and 2.2-fold of NFD, respectively) in mice fed HFD than in those fed NFD. Cholic acid and deoxycholic acid significantly reduced the viability of L. plantarum No. 14 in culture experiments. In Expt. 2, after feeding HFD for 2 d, simultaneous administration of inulin (10 mg) with L. plantarum No. 14 significantly increased (100-fold of that without inulin) the fecal recovery of viable L. plantarum. Inulin administration did not alter intestinal bile acid concentrations. In Expt. 3, after feeding HFD for 2 d, mice were i.g. administered either inulin (10 mg) or vehicle and, after 6 h, cecal contents were subjected to culture experiments. Growth of L. plantarum No. 14 was significantly higher in the cecal contents of inulin-administered mice than vehicle-administered mice. Inulin supplementation to cecal contents of vehicle-administered mice significantly enhanced the growth of L. plantarum No. 14. We propose that HFD impairs the survival of probiotics in the gut due to increased bile acid stress and that simultaneous administration of inulin prolongs the survival of probiotics in mice fed HFD.
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Affiliation(s)
- Naoki Takemura
- Graduate School of Life Science, Hokkaido University, Sapporo 060-8589, Japan
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Abstract
Because gut microbiota has recently attracted much attention as an environmental factor involved in the development of obesity, probiotics may be useful in preventing and/or improving obesity and its related disorders. The present study aimed to investigate the effects of Lactobacillus plantarum strain No. 14 (LP14), a bacterial strain reported to decrease body fat percentage in healthy volunteers, on adipocyte size in mice. Female C57BL/6 mice were fed either normal- or high-fat diet and administered intragastrically with LP14 (1 x 10(8) colony-forming units/mouse) or vehicle daily for 11 weeks. High dietary fat intake increased body weight gain, white adipose tissue weight, mean adipocyte size and serum total cholesterol and leptin concentrations, and decreased serum adiponectin concentration. In mice fed the high-fat diet, LP14 administration significantly reduced the mean adipocyte size and tended to reduce the white adipose tissue weight and serum total cholesterol and leptin concentrations as compared with the vehicle-administered mice. All mice had undetectable serum levels of conjugated linoleic acids that reportedly exert antiobesity action. In a separate experiment, LP14 ingestion had no influence on serum triacylglycerol accumulation following olive oil administration in Triton WR1339-treated mice, suggesting that dietary fat absorption is unaffected by LP14. In conclusion, we propose that LP14 may exert a beneficial effect on the onset of diet-induced obesity by reducing the cell size of white adipose tissues, and it seems unlikely that previously reported mechanisms for other bacterial strains are involved in the action of LP14.
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Affiliation(s)
- Naoki Takemura
- Graduate School of Life Science, Research Faculty of Agriculture, Hokkaido University, Kita-9, Nishi-9, Kita-ku, Sapporo, Hokkaido, Japan
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Yamashita E, Takamatsu H, Tada H, Toide H, Okaniwa H, Takemura N, Sasaki T, Miki Y, Fuke E, Hayashi T, Sakamoto T, Nakamura K, Fukazawa R, Sato C, Goto K, Kaseno K, Kumagai K, Naito S, Hoshizaki H, Oshima S. Transesophageal Echocardiography for Thrombus Screening Prior to Left Atrial Catheter Ablation. Circ J 2010; 74:1081-6. [DOI: 10.1253/circj.cj-09-1002] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [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: 11/09/2022]
Affiliation(s)
- Eiji Yamashita
- Division of Cardiology, Gunma Prefectural Cardiovascular Center
| | | | - Hiroshi Tada
- Cardiovascular Division, Graduate School of Comprehensive Human Science, University of Tsukuba
| | - Hiroyuki Toide
- Division of Cardiology, Gunma Prefectural Cardiovascular Center
| | - Hiroki Okaniwa
- Division of Cardiology, Gunma Prefectural Cardiovascular Center
| | - Naoki Takemura
- Division of Cardiology, Gunma Prefectural Cardiovascular Center
| | - Takehito Sasaki
- Division of Cardiology, Gunma Prefectural Cardiovascular Center
| | - Yuko Miki
- Division of Cardiology, Gunma Prefectural Cardiovascular Center
| | - Etsuko Fuke
- Division of Cardiology, Gunma Prefectural Cardiovascular Center
| | - Tatsuya Hayashi
- Division of Cardiology, Gunma Prefectural Cardiovascular Center
| | | | - Koki Nakamura
- Division of Cardiology, Gunma Prefectural Cardiovascular Center
| | - Rie Fukazawa
- Division of Cardiology, Gunma Prefectural Cardiovascular Center
| | - Chizuru Sato
- Division of Cardiology, Gunma Prefectural Cardiovascular Center
| | - Koji Goto
- Division of Cardiology, Gunma Prefectural Cardiovascular Center
| | - Kenichi Kaseno
- Division of Cardiology, Gunma Prefectural Cardiovascular Center
| | - Koji Kumagai
- Division of Cardiology, Gunma Prefectural Cardiovascular Center
| | - Shigeto Naito
- Division of Cardiology, Gunma Prefectural Cardiovascular Center
| | | | - Shigeru Oshima
- Division of Cardiology, Gunma Prefectural Cardiovascular Center
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Maruyama S, Okochi H, Takemura N, Minami Y. Long-Term Performance of a Solar-Powered Small Automatic Rainwater Collector and Its Application to Acid Deposition Monitoring in the Southeast Mountainside of Mt. Fuji. BUNSEKI KAGAKU 2010. [DOI: 10.2116/bunsekikagaku.59.357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Shohei Maruyama
- School of Creative Science and Engineering, Waseda University
| | - Hiroshi Okochi
- School of Creative Science and Engineering, Waseda University
| | - Naoki Takemura
- School of Creative Science and Engineering, Waseda University
| | - Yukiya Minami
- Department of Environmental Science and Engineering, Faculty of Bioresources and Environmental Sciences, Ishikawa Prefectural University
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Kumagai K, Naito S, Nakamura K, Hayashi T, Fukazawa R, Sato C, Takemura N, Miki Y, Fuke E, Tanaka Y, Hori Y, Goto K, Iwamoto J, Aonuma K, Oshima S, Taniguchi K. ATP-induced dormant pulmonary veins originating from the carina region after circumferential pulmonary vein isolation of atrial fibrillation. J Cardiovasc Electrophysiol 2009; 21:494-500. [PMID: 20021515 DOI: 10.1111/j.1540-8167.2009.01667.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [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: 11/28/2022]
Abstract
INTRODUCTION Elimination of transient pulmonary vein recurrences (dormant PVs) induced by an ATP injection and ablation at the PV carina region is an effective strategy for atrial fibrillation (AF) ablation. The relationship between dormant PVs and the PV carina region has not been evaluated. METHODS A total of 212 consecutive symptomatic AF patients underwent circumferential PV electrical isolation (CPVEI) with a double lasso technique. They were divided into 2 groups in a retrospective review; Group 1: those given an ATP injection during an intravenous isoproterenol infusion after the CPVEI (n = 106), and Group 2: those in which it was not given after the CPVEI (n = 106). Radiofrequency energy was applied at the earliest dormant PV activation site identified using a Lasso catheter on the CPVEI line and then PV carina region if it was ineffective. RESULTS After a successful PVEI, 54 patients (51%) in Group 1 had PV reconnections during an ATP injection. Acute PVEI sites were observed on the carina region within the CPVEI line in the right PVs (16%) and left PVs (10%). Dormant PVs were reisolated at the carina region in the right PVs (23%) and left PVs (26%). The distribution of the dormant PV sites, except for the RIPV, significantly differed from that of the acute PVEI sites (P < 0.05). Further, AF recurred significantly in the Group 2 patients as compared to those in Group 1 during 16 +/- 6.1 months of follow-up (P < 0.05). CONCLUSION PV carina region origins may partly be responsible for an acute PVEI and potential recurrences.
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Affiliation(s)
- Koji Kumagai
- Division of Cardiology, Gunma Prefectural Cardiovascular Center, Maebashi, Gunma, Japan.
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