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Huang Z, Ishii M, Watanabe E, Kanamitsu K, Tai K, Kusuhara H, Ohwada T, Otani Y. Effect of N-o-nitrobenzylation on conformation and membrane permeability of linear peptides. Bioorg Chem 2024; 145:107220. [PMID: 38387401 DOI: 10.1016/j.bioorg.2024.107220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 02/06/2024] [Accepted: 02/15/2024] [Indexed: 02/24/2024]
Abstract
In this study, we explored the potential of the photoremovable o-nitrobenzyl (oNB) group as a tool to manipulate the membrane permeability and regulate the conformation of linear peptides by means of experimental and computational studies. We found that the introduction of one or more oNB groups markedly increased the permeability and altered the conformation, as compared to the corresponding unmodified peptides. We thoroughly investigated the impact of peptide length, number of oNB group, oNB insertion position, and introduction of N- and C-terminal protecting groups on the passive membrane permeability by means of parallel artificial membrane permeability assay (PAMPA). Photoreaction of peptides containing one or two oNB groups proceeded cleanly in moderate to high yields, releasing the unprotected parent linear peptide. The oNB-modified peptides showed a cis/trans conformational equilibrium, while after photolysis, the unprotected linear peptides showed only the trans-amide conformation. Furthermore, a comprehensive comparison of oNB-modified peptides and N-methylated peptides was conducted, encompassing conformational analysis and physicochemical properties. N-Substituted peptides favored a folded-like structure, which may contribute to the improvement in permeability.
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Affiliation(s)
- Zhihan Huang
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Mayumi Ishii
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Eri Watanabe
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kayoko Kanamitsu
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kempei Tai
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hiroyuki Kusuhara
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Tomohiko Ohwada
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yuko Otani
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
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Uekusa R, Yokoi A, Watanabe E, Yoshida K, Yoshihara M, Tamauchi S, Shimizu Y, Ikeda Y, Yoshikawa N, Niimi K, Suzuki S, Kajiyama H. Real-world data of poly (ADP-ribose) polymerase inhibitor response in Japanese patients with ovarian cancer. Cancer Med 2024; 13:e7149. [PMID: 38572951 PMCID: PMC10993710 DOI: 10.1002/cam4.7149] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 02/21/2024] [Accepted: 03/17/2024] [Indexed: 04/05/2024] Open
Abstract
BACKGROUND Poly (ADP-ribose) polymerase (PARP) inhibitors have been increasingly used in the treatment of ovarian cancer, with BRCA positivity and homologous recombination deficiency (HRD) being common biomarkers used for predicting their efficacy. However, given the limitations of these biomarkers, new ones need to be explored. METHODS This retrospective study included 181 ovarian cancer patients who received olaparib or niraparib at two independent hospitals in Japan between May 2018 and December 2022. Clinical information and blood sampling data were collected. Patient characteristics, treatment history, and predictability of treatment duration based on blood data before treatment initiation were examined. RESULTS High-grade serous carcinoma, BRCA positivity, HRD, and maintenance therapy after recurrence treatment were observed more frequently in the olaparib group than in the niraparib group. The most common reasons for treatment interruption were anemia, fatigue, and nausea in the olaparib group and thrombocytopenia in the niraparib group. Regarding response to olaparib treatment, complete response to the most recent treatment, maintenance therapy after the first chemotherapy, high-grade serous carcinoma, and germline BRCA positivity were observed significantly more frequently among responders than among non-responders. Furthermore, neutrophil counts were significantly higher among responders than among non-responders. CONCLUSIONS Inflammation-related blood data, such as neutrophil count, obtained at the initial pre-treatment visit might serve as potential predictors for prolonged olaparib treatment. While this study offers valuable insights into potential indicators for prolonged olaparib treatment, it underscores the need for more expansive research to strengthen our understanding of PARP inhibitors and optimize treatment strategies in ovarian cancer.
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Affiliation(s)
- Ryosuke Uekusa
- Department of Obstetrics and GynecologyNagoya University Graduate School of MedicineNagoyaJapan
| | - Akira Yokoi
- Department of Obstetrics and GynecologyNagoya University Graduate School of MedicineNagoyaJapan
- Institute for Advanced ResearchNagoya UniversityNagoyaJapan
| | - Eri Watanabe
- Department of Gynecologic OncologyAichi Cancer Center HospitalNagoyaJapan
| | - Kosuke Yoshida
- Department of Obstetrics and GynecologyNagoya University Graduate School of MedicineNagoyaJapan
- Institute for Advanced ResearchNagoya UniversityNagoyaJapan
| | - Masato Yoshihara
- Department of Obstetrics and GynecologyNagoya University Graduate School of MedicineNagoyaJapan
| | - Satoshi Tamauchi
- Department of Obstetrics and GynecologyNagoya University Graduate School of MedicineNagoyaJapan
| | - Yusuke Shimizu
- Department of Obstetrics and GynecologyNagoya University Graduate School of MedicineNagoyaJapan
| | - Yoshiki Ikeda
- Department of Obstetrics and GynecologyNagoya University Graduate School of MedicineNagoyaJapan
| | - Nobuhisa Yoshikawa
- Department of Obstetrics and GynecologyNagoya University Graduate School of MedicineNagoyaJapan
| | - Kaoru Niimi
- Department of Obstetrics and GynecologyNagoya University Graduate School of MedicineNagoyaJapan
| | - Shiro Suzuki
- Department of Gynecologic OncologyAichi Cancer Center HospitalNagoyaJapan
| | - Hiroaki Kajiyama
- Department of Obstetrics and GynecologyNagoya University Graduate School of MedicineNagoyaJapan
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Yamagishi M, Kuze Y, Kobayashi S, Nakashima M, Morishima S, Kawamata T, Makiyama J, Suzuki K, Seki M, Abe K, Imamura K, Watanabe E, Tsuchiya K, Yasumatsu I, Takayama G, Hizukuri Y, Ito K, Taira Y, Nannya Y, Tojo A, Watanabe T, Tsutsumi S, Suzuki Y, Uchimaru K. Mechanisms of action and resistance in histone methylation-targeted therapy. Nature 2024; 627:221-228. [PMID: 38383791 PMCID: PMC10917674 DOI: 10.1038/s41586-024-07103-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 01/23/2024] [Indexed: 02/23/2024]
Abstract
Epigenomes enable the rectification of disordered cancer gene expression, thereby providing new targets for pharmacological interventions. The clinical utility of targeting histone H3 lysine trimethylation (H3K27me3) as an epigenetic hallmark has been demonstrated1-7. However, in actual therapeutic settings, the mechanism by which H3K27me3-targeting therapies exert their effects and the response of tumour cells remain unclear. Here we show the potency and mechanisms of action and resistance of the EZH1-EZH2 dual inhibitor valemetostat in clinical trials of patients with adult T cell leukaemia/lymphoma. Administration of valemetostat reduced tumour size and demonstrated durable clinical response in aggressive lymphomas with multiple genetic mutations. Integrative single-cell analyses showed that valemetostat abolishes the highly condensed chromatin structure formed by the plastic H3K27me3 and neutralizes multiple gene loci, including tumour suppressor genes. Nevertheless, subsequent long-term treatment encounters the emergence of resistant clones with reconstructed aggregate chromatin that closely resemble the pre-dose state. Acquired mutations at the PRC2-compound interface result in the propagation of clones with increased H3K27me3 expression. In patients free of PRC2 mutations, TET2 mutation or elevated DNMT3A expression causes similar chromatin recondensation through de novo DNA methylation in the H3K27me3-associated regions. We identified subpopulations with distinct metabolic and gene translation characteristics implicated in primary susceptibility until the acquisition of the heritable (epi)mutations. Targeting epigenetic drivers and chromatin homeostasis may provide opportunities for further sustained epigenetic cancer therapies.
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Affiliation(s)
- Makoto Yamagishi
- Laboratory of Viral Oncology and Genomics, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan.
- Laboratory of Tumor Cell Biology, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan.
| | - Yuta Kuze
- Laboratory of Systems Genomics, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Seiichiro Kobayashi
- Division of Hematopoietic Disease Control, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- Department of Hematology, Kanto Rosai Hospital, Kanagawa, Japan
| | - Makoto Nakashima
- Laboratory of Tumor Cell Biology, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Satoko Morishima
- Division of Endocrinology, Diabetes and Metabolism, Hematology and Rheumatology, Second Department of Internal Medicine, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Toyotaka Kawamata
- Department of Hematology/Oncology, IMSUT Hospital, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Junya Makiyama
- Department of Hematology/Oncology, IMSUT Hospital, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- Department of Hematology, Sasebo City General Hospital, Nagasaki, Japan
| | - Kako Suzuki
- Laboratory of Viral Oncology and Genomics, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
- Laboratory of Tumor Cell Biology, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Masahide Seki
- Laboratory of Systems Genomics, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Kazumi Abe
- Laboratory of Systems Genomics, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Kiyomi Imamura
- Laboratory of Systems Genomics, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Eri Watanabe
- IMSUT Clinical Flow Cytometry Laboratory, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Kazumi Tsuchiya
- IMSUT Clinical Flow Cytometry Laboratory, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Isao Yasumatsu
- Organic and Biomolecular Chemistry Department, Daiichi Sankyo RD Novare, Tokyo, Japan
| | | | | | - Kazumi Ito
- Translational Science I, Daiichi Sankyo, Tokyo, Japan
| | - Yukihiro Taira
- Laboratory of Viral Oncology and Genomics, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Yasuhito Nannya
- Division of Hematopoietic Disease Control, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- Department of Hematology/Oncology, IMSUT Hospital, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Arinobu Tojo
- Tokyo Medical and Dental University, Tokyo, Japan
| | - Toshiki Watanabe
- Department of Practical Management of Medical Information, Graduate School of Medicine, St Marianna University, Kanagawa, Japan
| | | | - Yutaka Suzuki
- Laboratory of Systems Genomics, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan.
| | - Kaoru Uchimaru
- Laboratory of Tumor Cell Biology, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan.
- Department of Hematology/Oncology, IMSUT Hospital, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.
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Masuoka S, Tanaka T, Kanaji M, Furukawa K, Koshiba K, Yamada Z, Watanabe E, Kawazoe M, Ito S, Fuchigami A, Nanki T. A case of systemic lupus erythematosus in a patient with Noonan syndrome with recurrent severe hypoglycemia. Mod Rheumatol Case Rep 2024:rxae004. [PMID: 38252597 DOI: 10.1093/mrcr/rxae004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/25/2023] [Accepted: 01/18/2024] [Indexed: 01/24/2024]
Abstract
Noonan syndrome (NS) is a dominantly inherited genetic disorder with mutations in genes encoding components or regulators of the RAS/mitogen-activated protein kinase pathway. Its diagnosis is based on characteristic features, including typical facial features, a short stature, congenital heart disease, mild developmental delay, and cryptorchidism. Patients with NS sometimes develop autoimmune diseases, such as Hashimoto's thyroiditis and, rarely, systemic lupus erythematosus (SLE). We herein present a 29-year-old Japanese female with NS complicated by SLE and repeated severe hypoglycemia. The patient was diagnosed with SLE based on thrombocytopenia, nephritis, a positive antinuclear antibody titer (1:640), and a positive anti-dsDNA antibody. The patient was treated with a glucocorticoid, mycophenolate mofetil, and tacrolimus, which attenuated both SLE and hypoglycemia. Since insulin receptor antibody levels were higher to the upper normal range and decreased after treatment, hypoglycemia probably appeared to be attributed to type B insulin resistance syndrome (TBIRS). We herein present the first case of SLE in NS complicated by TBIRS. Although NS is a rare disease, we need to consider the complication of autoimmune diseases, including SLE.
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Affiliation(s)
- Shotaro Masuoka
- Division of Rheumatology, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - Takashi Tanaka
- Division of Rheumatology, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - Miwa Kanaji
- Division of Rheumatology, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - Karin Furukawa
- Division of Rheumatology, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - Keiko Koshiba
- Division of Rheumatology, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - Zento Yamada
- Division of Rheumatology, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - Eri Watanabe
- Division of Rheumatology, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - Mai Kawazoe
- Division of Rheumatology, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - Shun Ito
- Department of Pediatrics, Toho University Omori Medical Center, Tokyo, Japan
| | - Ayako Fuchigami
- Division of Diabetes, Metabolism, and Endocrinology, Department of Medicine, Toho University Graduate School of Medicine
| | - Toshihiro Nanki
- Division of Rheumatology, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
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5
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Kanamitsu K, Ishii M, Watanabe E, Miyachi H. [Evaluation of Solubility and Membrane Permeability of Middle-Molecule Compounds Using Artificial Membranes and Living Cells]. YAKUGAKU ZASSHI 2024; 144:529-537. [PMID: 38692929 DOI: 10.1248/yakushi.23-00191-1] [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: 05/03/2024]
Abstract
In contrast to small molecules, middle molecules present a promising therapeutic modality owing to their elevated specificity, minimal adverse effects, capacity to target protein-protein interactions, and, unlike antibody-based drugs, their suitability for oral administration and intracellular target engagement. Post-oral administration, the paramount considerations encompass solubility and membrane permeability during the initial phase until the drug attains systemic circulation. Furthermore, penetration of the cell membrane is essential to accessing intracellular targets. We evaluated the solubility and membrane permeability of 965 compounds sourced from middle molecule libraries affiliated with Hokkaido University, Kitasato University, and the University of Tokyo. To gauge membrane permeability, we employed both the parallel artificial membrane permeability assay (PAMPA) and Caco-2 cell monolayers. Notably, while membrane permeability in Caco-2 cells exhibited an approximate threefold increase in comparison to PAMPA measurements, certain compounds demonstrated permeability levels less than one-third of those observed in Caco-2 cells. Recognizing the potential involvement of efflux transporters expressed in Caco-2 cells in these variations, we conducted additional assessments involving directional transport in the presence of a transporter inhibitor. Our findings suggest that nearly 80% of these compounds serve as substrates for efflux transporters. Considering the relevance of intracellular targets, we shifted our focus from membrane permeation to intracellular uptake, conducting simulations tailored to assess cellular uptake.
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Affiliation(s)
- Kayoko Kanamitsu
- Graduate School of Pharmaceutical Sciences, The University of Tokyo
| | - Mayumi Ishii
- Graduate School of Pharmaceutical Sciences, The University of Tokyo
| | - Eri Watanabe
- Graduate School of Pharmaceutical Sciences, The University of Tokyo
| | - Hiroyuki Miyachi
- Graduate School of Pharmaceutical Sciences, The University of Tokyo
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6
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Hideyama T, Watanabe E, Ido N, Terashi H, Aizawa H. Non-traumatic Rectus Sheath Hematoma During Direct Oral Anticoagulation. Cureus 2023; 15:e45876. [PMID: 37885548 PMCID: PMC10598347 DOI: 10.7759/cureus.45876] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/24/2023] [Indexed: 10/28/2023] Open
Abstract
We report a case of anticoagulation therapy complicated by a non-traumatic rectus sheath hematoma (RSH). RSH is a relatively rare occurrence caused by bleeding into the rectus sheath following the rupture of the superior and inferior epigastric vessels combined with a primary tear of the rectus muscle fibers. Herein, we report a rare presentation of RSH in a 73-year-old man taking the direct oral anticoagulant (DOAC) apixaban orally. The patient presented with sudden right abdominal pain after a severe cough, which worsened with cough and movement. The Fothergill and Carnett signs were positive. The platelet count, renal function test, and the prothrombin time/international normalized ratio were within the normal range. The activated partial thromboplastin time was 40.0 s, slightly longer than normal. Computed tomography (CT) of the abdomen and pelvis showed RSH, and DOAC therapy was temporarily discontinued. Subsequently, RSH resolution was confirmed via CT four weeks after the onset. DOACs are safer and more efficacious than warfarin for patients with non-valvular atrial fibrillation. However, RSH is a potential complication of anticoagulant therapy. This case report demonstrates that RSH should be considered in the differential diagnosis of sudden-onset abdominal pain and mass in patients on DOACs.
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Affiliation(s)
| | - Eri Watanabe
- Neurology, Tokyo Medical University Hospital, Tokyo, JPN
| | - Nobuhiro Ido
- Neurology, Tokyo Medical University Hospital, Tokyo, JPN
| | - Hiroo Terashi
- Neurology, Tokyo Medical University Hospital, Tokyo, JPN
| | - Hitoshi Aizawa
- Neurology, Tokyo Medical University Hospital, Tokyo, JPN
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7
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Tanaka K, Asano T, Watanabe E, Matsumoto K, Kashima H, Koito Y, Miura T, Takahashi Y, Tsuboi R, Ishii T, Otake H, Yoshikawa S, Uehara T, Sekine M, Matsumoto S, Asabe S, Miyatani H, Mashima H. Adult-onset Still's Disease Diagnosed during Puerperium with Liver Dysfunction in Pregnancy and Liver Failure of the Infant. Intern Med 2023; 62:2349-2354. [PMID: 37587054 PMCID: PMC10484755 DOI: 10.2169/internalmedicine.1038-22] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 10/31/2022] [Indexed: 08/18/2023] Open
Abstract
Most cases of liver dysfunction in pregnancy are pregnancy-related, but the onset of systemic autoimmune diseases is also differentiated. A 24-year-old woman presented with liver dysfunction at 28 weeks' gestation with suspected autoimmune hepatitis and started taking ursodeoxycholic acid. She gave birth prematurely at 35 weeks' gestation, and the infant presented with pancytopenia and liver failure but survived because of liver transplantation. Since the patient had major symptoms during the puerperium, she was diagnosed with adult-onset Still's disease. When encountering a patient with liver dysfunction during pregnancy, we should also consider the onset of autoimmune diseases.
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Affiliation(s)
- Kenjo Tanaka
- Department of Gastroenterology, Saitama Medical Center, Jichi Medical University, Japan
| | - Takeharu Asano
- Department of Gastroenterology, Saitama Medical Center, Jichi Medical University, Japan
| | - Eri Watanabe
- Department of Rheumatology, Saitama Medical Center, Jichi Medical University, Japan
| | - Keita Matsumoto
- Department of Gastroenterology, Saitama Medical Center, Jichi Medical University, Japan
| | - Hitomi Kashima
- Department of Gastroenterology, Saitama Medical Center, Jichi Medical University, Japan
| | - Yudai Koito
- Department of Gastroenterology, Saitama Medical Center, Jichi Medical University, Japan
| | - Takaya Miura
- Department of Gastroenterology, Saitama Medical Center, Jichi Medical University, Japan
| | - Yuko Takahashi
- Department of Gastroenterology, Saitama Medical Center, Jichi Medical University, Japan
| | - Rumiko Tsuboi
- Department of Gastroenterology, Saitama Medical Center, Jichi Medical University, Japan
| | - Takehiro Ishii
- Department of Gastroenterology, Saitama Medical Center, Jichi Medical University, Japan
| | - Haruka Otake
- Department of Gastroenterology, Saitama Medical Center, Jichi Medical University, Japan
| | - Shuhei Yoshikawa
- Department of Gastroenterology, Saitama Medical Center, Jichi Medical University, Japan
| | - Takeshi Uehara
- Department of Gastroenterology, Saitama Medical Center, Jichi Medical University, Japan
| | - Masanari Sekine
- Department of Gastroenterology, Saitama Medical Center, Jichi Medical University, Japan
| | - Satohiro Matsumoto
- Department of Gastroenterology, Saitama Medical Center, Jichi Medical University, Japan
| | - Shinichi Asabe
- Department of Gastroenterology, Saitama Medical Center, Jichi Medical University, Japan
| | - Hiroyuki Miyatani
- Department of Gastroenterology, Saitama Medical Center, Jichi Medical University, Japan
| | - Hirosato Mashima
- Department of Gastroenterology, Saitama Medical Center, Jichi Medical University, Japan
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8
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Makrakis LR, Oliveira VC, Santos ES, Nascimento C, Watanabe E, Ribeiro AB, Silva-Lovato CH. Analysis of microbial communities of ocular prostheses and anophthalmic sockets using 16S rRNA gene sequencing. Biofouling 2023; 39:555-564. [PMID: 37470406 DOI: 10.1080/08927014.2023.2236562] [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] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 06/06/2023] [Accepted: 07/07/2023] [Indexed: 07/21/2023]
Abstract
Ocular prostheses are liable to host microbial adhesion, which can favor conjunctival inflammation. Knowing the microbiota of the ocular prosthesis and anophthalmic socket is important for predicting infection-related pathogens. This study evaluated the microbiota of the prostheses and anophthalmic sockets of six individuals by 16S rRNA sequencing. The microbial abundance and diversity were analyzed using the Operational Taxonomic Units at the genus level. Forty-seven phyla, capturing 1,258 named genera, were recorded in the sample set. In both sites, the most frequent genera were Fusobacterium, Staphylococcus, Prevotella, and Streptococcus. The microbial abundance was higher for the anophthalmic socket than for the prosthesis. Alpha diversity showed no significant differences in bacterial richness or diversity between sites. Although the microbial abundance in the anophthalmic socket was higher, both sites had similar microbiota with high diversity and low dominance among the genera.
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Affiliation(s)
- L R Makrakis
- Department of Dental Materials and Prosthodontics, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - V C Oliveira
- Department of Dental Materials and Prosthodontics, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Human Exposome and Infectious Diseases Network-HEID, School of Nursing of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - E S Santos
- Department of Clinical Toxicological and Bromatologic Analysis, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - C Nascimento
- Department of Dental Materials and Prosthodontics, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - E Watanabe
- Human Exposome and Infectious Diseases Network-HEID, School of Nursing of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - A B Ribeiro
- Department of Dental Materials and Prosthodontics, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - C H Silva-Lovato
- Department of Dental Materials and Prosthodontics, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
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Nagao Y, Yokoi A, Yoshida K, Sugiyama M, Watanabe E, Nakamura K, Kitagawa M, Asano-Inami E, Koya Y, Yoshihara M, Tamauchi S, Shimizu Y, Ikeda Y, Yoshikawa N, Kato T, Yamamoto Y, Kajiyama H. Novel therapeutic strategies targeting UCP2 in uterine leiomyosarcoma. Pharmacol Res 2023; 189:106693. [PMID: 36773710 DOI: 10.1016/j.phrs.2023.106693] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 01/30/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023]
Abstract
Uterine leiomyosarcoma (ULMS) is a malignant stromal tumor arising from the myometrium with a poor prognosis and very limited response to current chemotherapy. This study aimed to identify novel targets for ULMS through a three-step screening process using a chemical library consisting of 1271 Food and Drug Administration-approved drugs. First, we evaluated their inhibitory effects on ULMS cells and identified four candidates: proscillaridin A, lanatoside C, floxuridine, and digoxin. Then, we subcutaneously or orthotopically transplanted SK-UT-1 cells into mice to establish mouse models. In vivo analyses showed that proscillaridin A and lanatoside C exerted a superior antitumor effect. The results of mRNA sequencing showed that uncoupling protein 2 (UCP2) was suppressed in the sirtuin signaling pathway, increasing reactive oxygen species (ROS) and inducing cell death. Moreover, the downregulation of UCP2 induced ROS and suppressed ULMS cell growth. Furthermore, analyses using clinical samples showed that UCP2 expression was significantly upregulated in ULMS tissues than in myoma tissues both at the RNA and protein levels. These findings suggested that UCP2 is a potential therapeutic target and can contribute to the development of novel therapeutic strategies in patients with ULMS.
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Affiliation(s)
- Yukari Nagao
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Akira Yokoi
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan; Institute for Advanced Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya-shi, Aichi 464-8603, Japan; Japan Science and Technology Agency (JST), FOREST, 4-1-8 Honcho, Kawaguchi-shi, Saitama 332-0012, Japan.
| | - Kosuke Yoshida
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan; Institute for Advanced Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya-shi, Aichi 464-8603, Japan
| | - Mai Sugiyama
- Bell Research Center, Department of Obstetrics and Gynecology Collaborative Research, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Eri Watanabe
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Kae Nakamura
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan; Center for Low-Temperature Plasma Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya-shi, Aichi, 464-8603, Japan
| | - Masami Kitagawa
- Bell Research Center, Department of Obstetrics and Gynecology Collaborative Research, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Eri Asano-Inami
- Bell Research Center, Department of Obstetrics and Gynecology Collaborative Research, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Yoshihiro Koya
- Bell Research Center, Department of Obstetrics and Gynecology Collaborative Research, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Masato Yoshihara
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Satoshi Tamauchi
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Yusuke Shimizu
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Yoshiki Ikeda
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Nobuhisa Yoshikawa
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Tomoyasu Kato
- Department of Gynecologic Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Yusuke Yamamoto
- Laboratory of Integrative Oncology, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Hiroaki Kajiyama
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
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10
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Watanabe E, Yokoi A, Yoshida K, Sugiyama M, Kitagawa M, Nishino K, Yamamoto E, Niimi K, Yamamoto Y, Kajiyama H. Drug library screening identifies histone deacetylase inhibition as a novel therapeutic strategy for choriocarcinoma. Cancer Med 2023; 12:4543-4556. [PMID: 36106577 PMCID: PMC9972027 DOI: 10.1002/cam4.5243] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/20/2022] [Accepted: 08/14/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Choriocarcinoma is a rare and aggressive gynecological malignancy. The standard treatment is systemic chemotherapy as choriocarcinoma exhibits high chemosensitivity. However, refractory choriocarcinoma exhibits chemoresistance; thus, the prognosis remains very poor. This study aimed to identify novel therapeutic agents for choriocarcinoma by utilizing a drug repositioning strategy. METHODS Three choriocarcinoma cell lines (JAR, JEG-3, and BeWo) and a human extravillous trophoblast cell line (HTR-8/SVneo) were used for the analyses. The growth inhibitory effects of 1,271 FDA-approved compounds were evaluated in vitro screening assays and selected drugs were tested in tumor-bearing mice. Functional analyses of drug effects were performed based on RNA sequencing. RESULTS Muti-step screening identified vorinostat, camptothecin (S, +), topotecan, proscillaridin A, and digoxin as exhibiting an anti-cancer effect in choriocarcinoma cells. Vorinostat, a histone deacetylase inhibitor, was selected as a promising candidate for validation and the IC50 values for choriocarcinoma cells were approximately 1 μM. RNA sequencing and subsequent pathway analysis revealed that the ferroptosis pathway was likely implicated, and key ferroptosis-related genes (i.e., GPX4, NRF2, and SLC3A2) were downregulated following vorinostat treatment. Furthermore, vorinostat repressed tumor growth and downregulated the expression of GPX4 and NRF2 in JAR cell-bearing mice model. CONCLUSION Vorinostat, a clinically approved drug for the treatment of advanced primary cutaneous T-cell lymphoma, showed a remarkable anticancer effect both in vitro and in vivo by regulating the expression of ferroptosis-related genes. Therefore, vorinostat may be an effective therapeutic candidate for patients with choriocarcinoma.
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Affiliation(s)
- Eri Watanabe
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Akira Yokoi
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Institute for Advanced Research, Nagoya University, Nagoya, Japan
| | - Kosuke Yoshida
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Institute for Advanced Research, Nagoya University, Nagoya, Japan
| | - Mai Sugiyama
- Bell Research Center, Department of Obstetrics and Gynecology Collaborative Research, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masami Kitagawa
- Bell Research Center, Department of Obstetrics and Gynecology Collaborative Research, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kimihiro Nishino
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Eiko Yamamoto
- Department of Healthcare Administration, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kaoru Niimi
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yusuke Yamamoto
- Laboratory of Integrative Oncology, National Cancer Center Research Institute, Tokyo, Japan
| | - Hiroaki Kajiyama
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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11
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Iwami N, Kawamata M, Ozawa N, Yamamoto T, Watanabe E, Mizuuchi M, Moriwaka O, Kamiya H. Therapeutic intervention based on gene sequencing analysis of microbial 16S ribosomal RNA of the intrauterine microbiome improves pregnancy outcomes in IVF patients: a prospective cohort study. J Assist Reprod Genet 2023; 40:125-135. [PMID: 36534230 PMCID: PMC9840729 DOI: 10.1007/s10815-022-02688-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022] Open
Abstract
PURPOSE A Lactobacillus-dominated microbiota in the endometrium was reported to be associated with favorable reproductive outcomes. We investigated in this study whether 16S ribosomal RNA (rRNA) gene sequencing analysis of the uterine microbiome improves pregnancy outcomes. METHODS This prospective cohort study recruited a total of 195 women with recurrent implantation failure (RIF) between March 2019 and April 2021 in our fertility center. Analysis of the endometrial microbiota by 16S rRNA gene sequencing was suggested for all patients who had three or more failed embryo transfers (ETs). One hundred and thirty-one patients underwent microbial 16S rRNA gene sequencing (study group) before additional transfers, while 64 patients proceeded to ET without that analysis (control group). The primary outcome was to compare the cumulative clinical pregnancy rate of two additional ETs. MAIN RESULTS An endometrial microbiota considered abnormal was detected in 30 patients (22.9%). All but one of these 30 patients received antibiotics according to the bacterial genus detected in their sample, followed by treatment with probiotics. As a result, the cumulative clinical pregnancy rate (study group: 64.5% vs. control group: 33.3%, p = 0.005) and the ongoing pregnancy rate (study group: 48.9% vs. control group: 32.8%, p = 0.028) were significantly increased in the study group compared to the control group. CONCLUSION Personalized treatment recommendations based on the microbial 16S rRNA gene sequencing of the uterine microbiota can improve IVF outcomes of patients with RIF. TRIAL REGISTRATION The University Hospital Medical Information Network (UMIN) Clinical Trial Registry: UMIN000036050 (date of registration: March 1, 2019).
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Affiliation(s)
- Nanako Iwami
- Department of Reproductive Health, Iryo Hojin Shadan Kamiya Ladies Clinic, Nittsu Bldg 2nd floor 2-1, Nishi 2-Chome, Kita 3-Jo, Chuo-Ku, Sapporo, Hokkaido, 060-0003, Japan.
| | - Miho Kawamata
- Department of Reproductive Health, Iryo Hojin Shadan Kamiya Ladies Clinic, Nittsu Bldg 2nd floor 2-1, Nishi 2-Chome, Kita 3-Jo, Chuo-Ku, Sapporo, Hokkaido, 060-0003, Japan
| | - Naoko Ozawa
- Department of Reproductive Health, Iryo Hojin Shadan Kamiya Ladies Clinic, Nittsu Bldg 2nd floor 2-1, Nishi 2-Chome, Kita 3-Jo, Chuo-Ku, Sapporo, Hokkaido, 060-0003, Japan
| | - Takahiro Yamamoto
- Department of Reproductive Health, Iryo Hojin Shadan Kamiya Ladies Clinic, Nittsu Bldg 2nd floor 2-1, Nishi 2-Chome, Kita 3-Jo, Chuo-Ku, Sapporo, Hokkaido, 060-0003, Japan
| | - Eri Watanabe
- Department of Reproductive Health, Iryo Hojin Shadan Kamiya Ladies Clinic, Nittsu Bldg 2nd floor 2-1, Nishi 2-Chome, Kita 3-Jo, Chuo-Ku, Sapporo, Hokkaido, 060-0003, Japan
| | - Masahito Mizuuchi
- Department of Reproductive Health, Iryo Hojin Shadan Kamiya Ladies Clinic, Nittsu Bldg 2nd floor 2-1, Nishi 2-Chome, Kita 3-Jo, Chuo-Ku, Sapporo, Hokkaido, 060-0003, Japan
- Department of Reproductive Health, Iryo Hojin Shadan Mizuuchi Women's Clinic, 2-5 Toyooka 4Jo 3Chome, Asahikawa, Hokkaido, 078-8234, Japan
| | - Osamu Moriwaka
- Department of Reproductive Health, Iryo Hojin Shadan Kamiya Ladies Clinic, Nittsu Bldg 2nd floor 2-1, Nishi 2-Chome, Kita 3-Jo, Chuo-Ku, Sapporo, Hokkaido, 060-0003, Japan
| | - Hirobumi Kamiya
- Department of Reproductive Health, Iryo Hojin Shadan Kamiya Ladies Clinic, Nittsu Bldg 2nd floor 2-1, Nishi 2-Chome, Kita 3-Jo, Chuo-Ku, Sapporo, Hokkaido, 060-0003, Japan
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12
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Owada G, Nishizawa H, Matoyama Y, Watanabe E, Mitsuda K, Kaneko N, Kimura Y, Nanao T, Fujimoto J. Effect of Arginine Vasopressin on Intraoperative Hypotension Caused by Oral Administration of 5-Aminolevulinic Acid. Case Rep Anesthesiol 2023; 2023:1745373. [PMID: 37192960 PMCID: PMC10182879 DOI: 10.1155/2023/1745373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 04/01/2023] [Accepted: 04/12/2023] [Indexed: 05/18/2023] Open
Abstract
5-Aminolevulinic acid (5-ALA) is used for the photodynamic diagnosis of malignant tumors and has been effectively utilized to improve the complete resection rate and reduce the risk of tumor recurrence. However, intraoperative hypotension is a common adverse effect of oral 5-ALA, and it occasionally progresses to severe prolonged hypotension requiring high-dose catecholamine administration. We report a case of intraoperative hypotension due to oral 5-ALA in which arginine vasopressin (AVP) administration was effective for increasing the blood pressure. A 77-year-old man scheduled for a craniotomy for glioma was administered 5-ALA orally before surgery. After the induction of anesthesia, his blood pressure decreased substantially. Although we administered various vasopressor agents, hypotension was prolonged. However, after starting a continuous administration of AVP, the systolic blood pressure increased, and the hemodynamic parameters remained stable during the remainder of the operation. 5-ALA administration may lower blood pressure by inducing nitric oxide production, and AVP inhibits inducible nitric oxide synthase messenger RNA expression and interleukin-1β-stimulated nitric oxide production. In light of these mechanisms, AVP may be a reasonable treatment agent for hypotension induced by 5-ALA.
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Affiliation(s)
- Gen Owada
- Department of Intensive Care Medicine, Yokohama Rosai Hospital, Yokohama, Japan
| | - Hideo Nishizawa
- Department of Intensive Care Medicine, Yokohama Rosai Hospital, Yokohama, Japan
| | - Yuki Matoyama
- Department of Intensive Care Medicine, Yokohama Rosai Hospital, Yokohama, Japan
| | - Eri Watanabe
- Department of Intensive Care Medicine, Yokohama Rosai Hospital, Yokohama, Japan
| | - Keigo Mitsuda
- Department of Anesthesia, Yokohama Rosai Hospital, Yokohama, Japan
| | - Naoki Kaneko
- Department of Intensive Care Medicine, Yokohama Rosai Hospital, Yokohama, Japan
| | - Yasuhiro Kimura
- Department of Intensive Care Medicine, Yokohama Rosai Hospital, Yokohama, Japan
| | - Taikan Nanao
- Department of Intensive Care Medicine, Yokohama Rosai Hospital, Yokohama, Japan
| | - Junichi Fujimoto
- Department of Intensive Care Medicine, Yokohama Rosai Hospital, Yokohama, Japan
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13
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Ido N, Kato H, Akiba Y, Saito T, Watanabe E, Aizawa H. [Cytomegalovirus associated myelitis in a non-immunocompromised adult due to initial cytomegalovirus infection]. Rinsho Shinkeigaku 2022; 62:922-927. [PMID: 36450486 DOI: 10.5692/clinicalneurol.cn-001777] [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: 06/17/2023]
Abstract
The patient was a 30-year-old man who developed muscle weakness in both lower extremities, sensory deficits below the fourth thoracic spinal cord level, and bladder rectal dysfunction owing to cytomegalovirus (CMV) associated myelitis. His blood tests showed mononucleosis, hepatic dysfunction, and the presence of serum CMV-IgM antibodies, and T2-weighted imaging on MRI displayed a continuous high signal on the ventral side of the spinal cord. Although his medical history and laboratory tests did not indicate that he was immunocompromised, we speculated he had CMV-associated myelitis. As the first infection with CMV in a non-immunocompromised adult can result in mononucleosis, we considered that this patient developed myelitis after mononucleosis caused by CMV infection for the first time. CMV-associated myelitis in non-immunocompromised individuals is rare. In general, CMV infections are common in immunosuppressed individuals. However, in Japan, adults with CMV antibodies have recently been decreasing, and hence CMV infections in non-immunocompromised adults are expected to increase in the future.
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Affiliation(s)
- Nobuhiro Ido
- Department of Neurology, Tokyo Medical University Hospital
| | - Hirohisa Kato
- Department of Neurology, Tokyo Medical University Hospital
| | - Yuki Akiba
- Department of Neurology, Tokyo Medical University Hospital
| | - Tomoko Saito
- Department of Neurology, Tokyo Medical University Hospital
| | - Eri Watanabe
- Department of Neurology, Tokyo Medical University Hospital
| | - Hitoshi Aizawa
- Department of Neurology, Tokyo Medical University Hospital
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14
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Kawakubo M, Nagao M, Yamamoto A, Nakao R, Matsuo Y, Fukushim K, Watanabe E, Sakai A, Sasaki M, Sakai S. 13N-ammonia positron emission tomography-derived endocardial strain for the assessment of ischemia using feature-tracking in high-resolution cine imaging. J Nucl Cardiol 2022; 29:2103-2114. [PMID: 34117615 DOI: 10.1007/s12350-021-02677-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [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: 03/12/2021] [Accepted: 05/11/2021] [Indexed: 12/23/2022]
Abstract
BACKGROUND Assessing endocardial strain using a single 13N-ammonia positron emission tomography (PET) scan would be clinically useful, given the association between ischemia and myocardial deformation. However, no software has been developed for strain analysis using PET. We evaluated the clinical potential of feature tracking-derived strain values measured using PET, based on associations with the myocardial flow reserve (MFR). METHODS AND RESULTS This retrospective study included 95 coronary artery disease patients who underwent myocardial 13N-ammonia PET. Semi-automatic measurements were made using a feature-tracking technique during myocardial cine imaging, and values were calculated using a 16-segment model. Adenosine-stressed global circumferential strain (CS) and global longitudinal strain (LS) values were compared with global MFR values. Stressed and resting global strain values were also compared. Global strain values were significantly lower in 39 patients with abnormal MFRs [< 2.0] than in 56 patients with normal MFRs [≥ 2.0]. The global CS values in the stressed state were significantly decreased than the resting state values in patients with abnormal MFRs. CONCLUSIONS This study applied endocardial feature-tracking to 13N-ammonia PET, and the results suggested that blood flow and myocardial motility could be clinically assessed in ischemic patients using a single PET scan.
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Affiliation(s)
- Masateru Kawakubo
- Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Michinobu Nagao
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan.
| | - Atsushi Yamamoto
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Risako Nakao
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Yuka Matsuo
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Kenji Fukushim
- Department of Nuclear Medicine, Saitama Medical University, Saitama, Japan
| | - Eri Watanabe
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Akiko Sakai
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Masayuki Sasaki
- Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Shuji Sakai
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
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15
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Miyamoto S, Ebato T, Watanabe E, Morio T, Kanegane H. B-Cell Immune Reconstitution with Mixed Chimerism After Hematopoietic Cell Transplantation in a Patient with Severe Combined Immunodeficiency. J Clin Immunol 2022; 42:1392-1395. [PMID: 35759077 DOI: 10.1007/s10875-022-01311-8] [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] [Received: 01/28/2022] [Accepted: 06/21/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Satoshi Miyamoto
- Department of Pediatrics and Developmental Biology, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Takasuke Ebato
- Department of Pediatrics, Kitasato University School of Medicine, Sagamihara, Japan
| | - Eri Watanabe
- IMSUT Clinical Flow Cytometry Laboratory, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Tomohiro Morio
- Department of Pediatrics and Developmental Biology, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Hirokazu Kanegane
- Department of Child Health and Development, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.
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16
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Fuji S, Yasunaga JI, Watanabe E, Matsuoka M, Uchimaru K, Ishikawa J. Pseudo-progression of adult T-cell leukemia-lymphoma after cord blood transplantation. Haematologica 2022; 107:2756-2759. [PMID: 35734929 PMCID: PMC9614541 DOI: 10.3324/haematol.2022.281175] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Indexed: 11/17/2022] Open
Affiliation(s)
- Shigeo Fuji
- Department of Hematology, Osaka International Cancer Institute, Osaka.
| | - Jun-Ichirou Yasunaga
- Graduate School of Medical Sciences, Faculty of Life Sciences Kumamoto University, Kumamoto
| | - Eri Watanabe
- IMSUT Clinical Flow Cytometry Laboratory, The University of Tokyo, Tokyo
| | - Masao Matsuoka
- Graduate School of Medical Sciences, Faculty of Life Sciences Kumamoto University, Kumamoto
| | - Kaoru Uchimaru
- Laboratory of Tumor Cell Biology, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo
| | - Jun Ishikawa
- Department of Hematology, Osaka International Cancer Institute, Osaka
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17
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Lima NG, Monteiro RM, Torres CP, de Souza-Gabriel AE, Watanabe E, Borsatto MC. Influence of antimicrobial photodynamic therapy with different pre-irradiation times on children's dental biofilm: randomized clinical trial. Eur Arch Paediatr Dent 2022; 23:897-904. [PMID: 35666375 DOI: 10.1007/s40368-022-00716-8] [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] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 05/03/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE Photodynamic therapy (PDT) is effective in reducing pathogenic microorganisms in the oral cavity and in preventing dental diseases. This study evaluated the pre-irradiation time using PDT (diode laser associated with 0.01% methylene blue) to decrease the number of microorganisms in the visible plaque in permanent teeth. METHODS This randomized clinical trial included 108 homologous lower permanent first molars (36 and 46) with biofilm from 54 children aged six to 12 years. PDT was performed (0.01% methylene blue photosensitizer/therapeutic laser-InGaAIP), according to the following protocols: Group 1, biofilm collection of the distal area of the lingual surface of 36 µm before PDT; group 2, mesial area of the lingual surface of 36 µm 1 min after PDT; group 3, area of the lingual surface of 46 µm before PDT; and group 4, mesial area of the lingual surface of 46 µm 5 min after PDT. RESULTS After statistical analysis, significant differences were observed between the groups (p = 0.000). In groups 2 and 4, the number of bacteria tended to decrease, with a more evident bacterial reduction in group 4. CONCLUSIONS Pre-irradiation reduced the number of colony-forming units of mature bacterial biofilms in vivo. A time of 5 min resulted in a greater reduction in the number of colony-forming units. CLINICAL TRIAL REGISTRATION ReBEC Identifier: RBR-6bqfp3; Date of Register: March 2nd, 2020. Retrospectively Registered.
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Affiliation(s)
- N G Lima
- Department of Pediatric Clinics, Departamento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Ribeirão Preto Dental School, University of São Paulo (USP), Av. do Café, s/n Subsetor Oeste 11, Ribeirão Prêto, SP, 14040-940, Brazil
| | - R M Monteiro
- Department of Fundamental Nursing, The College of Nursing, University of São Paulo, Ribeirão Prêto, SP, Brazil
| | - C P Torres
- Department of Pediatric Clinics, Departamento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Ribeirão Preto Dental School, University of São Paulo (USP), Av. do Café, s/n Subsetor Oeste 11, Ribeirão Prêto, SP, 14040-940, Brazil
| | - A E de Souza-Gabriel
- Department of Restorative Dentistry, Ribeirão Preto Dental School, University of São Paulo, Ribeirão Prêto, SP, Brazil
| | - E Watanabe
- Department of Restorative Dentistry, Ribeirão Preto Dental School, University of São Paulo, Ribeirão Prêto, SP, Brazil
| | - M C Borsatto
- Department of Pediatric Clinics, Departamento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Ribeirão Preto Dental School, University of São Paulo (USP), Av. do Café, s/n Subsetor Oeste 11, Ribeirão Prêto, SP, 14040-940, Brazil.
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Yamamoto A, Nagao M, Ando K, Nakao R, Sakai A, Watanabe E, Momose M, Sato K, Fukushima K, Sakai S, Hagiwara N. Myocardial Flow Reserve in Coronary Artery Disease with Low Attenuation Plaque: Coronary CTA and 13N-ammonia PET Assessments. Acad Radiol 2022; 29 Suppl 4:S17-S24. [PMID: 33281040 DOI: 10.1016/j.acra.2020.11.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 11/20/2020] [Accepted: 11/21/2020] [Indexed: 12/31/2022]
Abstract
RATIONALE AND OBJECTIVES Physiological measurements from coronary angiography show that coronary stenosis with necrotic core plaque reduces coronary flow reserve (CFR). Myocardial flow reserve (MFR) estimated by 13N-ammonia PET (NH3-PET) is a different index from CFR. Low attenuation plaque (LAP) on coronary CTA (CCTA) contains necrotic core, but the link between LAP and MFR has not been elucidated. We aimed to investigate the influence of LAP on MFR in coronary artery disease (CAD). MATERIALS AND METHODS The study included 105 consecutive patients who underwent NH3-PET and CCTA within 3 months. Nonevaluable coronary arteries due to severe calcification and stent implants were excluded. Finally, 290 major vessels were retrospectively analyzed. Coronary arteries were divided into mild (1%-49%), moderate (50%-69% stenosis), and severe (≥70% stenosis) groups. Coronary plaques were classified either LAP (including soft tissue CT value <30 HU) or completely classified plaques. MFR for the major vessels were calculated and MFR <2.0 was considered a significant decrease. Comparison of MFR between territories with and without LAP, and the effect of plaque characteristics on MFR was analyzed. RESULTS MFR was significantly lower for territories with LAP than with calcified plaques or no plaque (2.1 ± 0.7, 2.4 ± 0.7, and 2.3 ± 0.7; p < 0.05). There was no difference between calcified plaque and no plaque territories (p = 0.79). Multivariate logistic analysis for plaque characteristics and stenosis severity revealed that LAP and severe stenosis were independent predictors for territories with MFR <2.0 with odds ratios of 3.1 (95% confidence interval, 1.2-8.1) and 3.0 (95% confidence interval, 1.7-5.3). CONCLUSION LAP reduced MFR compared with calcified plaque or no plaque in CAD. LAP is an independent predictor of the territory with MFR <2.0.
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Yamamoto A, Nagao M, Fukushima K, Nakao R, Sakai A, Watanabe E, Momose M, Hagiwara N. PROGNOSIS OF CARDIAC SARCOIDOSIS PATIENTS USING BMIPP-SPECT AND CMR-LGE. J Am Coll Cardiol 2022. [DOI: 10.1016/s0735-1097(22)02291-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Nakao R, Nagao M, Higuchi S, Minami Y, Shoda M, Ando K, Yamamoto A, Sakai A, Watanabe E, Sakai S, Hagiwara N. Relation of Left Atrial Flow, Volume, and Strain to Paroxysmal Atrial Fibrillation in Patients With Hypertrophic Cardiomyopathy. Am J Cardiol 2022; 166:72-80. [PMID: 34930615 DOI: 10.1016/j.amjcard.2021.11.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 11/09/2021] [Accepted: 11/12/2021] [Indexed: 12/15/2022]
Abstract
This study aims to characterize flow, volume, and strain of the left atrium in hypertrophic cardiomyopathy (HC) with atrial fibrillation (AF) using cine cardiovascular magnetic resonance (CMR) imaging. Cine CMR data for 144 patients with HC, including 29 patients with episodes of paroxysmal AF and 13 patients with persistent AF, were retrospectively analyzed. The vortex flow of the left atrial (LA, %) was measured using a vortex flow map and was used as an estimate of flow. The LA end-systolic volume index (ml/m2), LA ejection fraction (%) and global peak longitudinal LA strain (%) derived from a feature-tracking method were used as estimates of volume and strain. Vortex flow of the LA in patients with paroxysmal AF was significantly smaller than in patients without AF (vertical long-axis view; 26.7 ± 10.8% vs 33.2 ± 12.2%, p <0.005). The patients with paroxysmal AF had greater LA end-systolic volume index and global peak longitudinal LA strain and lower LA ejection fraction compared with those without AF. In conclusion, patients with HC with paroxysmal AF are characterized by small vortex flow, large volume, and decreased strain of LA on cine CMR.
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21
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Nakao R, Nagao M, Yamamoto A, Fukushima K, Watanabe E, Sakai S, Hagiwara N. Papillary muscle ischemia on high-resolution cine imaging of nitrogen-13 ammonia positron emission tomography: Association with myocardial flow reserve and prognosis in coronary artery disease. J Nucl Cardiol 2022; 29:293-303. [PMID: 32566962 DOI: 10.1007/s12350-020-02231-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [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: 03/16/2020] [Accepted: 06/01/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND The evaluation of papillary muscle (PM) perfusion through existing perfusion imaging, including single-photon emission computed tomography and magnetic resonance imaging, is not possible. Therefore, this study sought to investigate the detection of PM ischemia in coronary artery disease (CAD) using nitrogen-13 (N-13) ammonia positron emission tomography (NH3 PET) and its association with global myocardial flow reserve (MFR) and major adverse cardiac events (MACE). METHODS Data of adenosine-stress NH3 PET for 263 consecutive patients with known or suspected CAD were retrospectively analyzed. PM ischemia was defined as the absence of PM accumulation under stress conditions and PM presence at rest on high-resolution cine imaging derived from PET-computed tomography scanner with time-of-flight technology. The primary outcome was MACE. RESULTS Of 263 patients, 30 experienced mean follow-up period of 910 days (MACE), while 31 (11.8%) presented PM ischemia. Compared to patients without PM ischemia, those with PM ischemia reported a significantly lower global MFR and a significantly higher rate of MACE (P < .0001). CONCLUSION NH3 PET enables the detection of PM ischemia in approximately 10% of patients with known or suspected CAD. PM ischemia is associated with reduced global MFR and is an important sign in predicting prognosis.
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Affiliation(s)
- Risako Nakao
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Michinobu Nagao
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan.
| | - Atsushi Yamamoto
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Kenji Fukushima
- Department of Nuclear Medicine Cardiology, Saitama Medical University International Medical Center, Saitama, Japan
| | - Eri Watanabe
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Shuji Sakai
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Nobuhisa Hagiwara
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
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22
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Ito S, Hirota T, Yanai M, Muto M, Watanabe E, Taya Y, Ieiri I. Effects of Genetic Polymorphisms of Cathepsin A on Metabolism of Tenofovir Alafenamide. Genes (Basel) 2021; 12:genes12122026. [PMID: 34946974 PMCID: PMC8700939 DOI: 10.3390/genes12122026] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 12/19/2021] [Indexed: 11/16/2022] Open
Abstract
Cathepsin A (CatA) is important as a drug-metabolizing enzyme responsible for the activation of prodrugs, such as the anti-human immunodeficiency virus drug Tenofovir Alafenamide (TAF). The present study was undertaken to clarify the presence of polymorphisms of the CatA gene in healthy Japanese subjects and the influence of gene polymorphism on the expression level of CatA protein and the drug-metabolizing activity. Single-strand conformation polymorphism method was used to analyze genetic polymorphisms in healthy Japanese subjects. Nine genetic polymorphisms were identified in the CatA gene. The polymorphism (85_87CTG>-) in exon 2 was a mutation causing a deletion of leucine, resulting in the change of the leucine 9-repeat (Leu9) to 8-repeat (Leu8) in the signal peptide region of CatA protein. The effect of Leu8 on the expression level of CatA protein was evaluated in Flp-In-293 cells with a stably expressed CatA, resulting in the expression of CatA protein being significantly elevated in variant 2 with Leu8 compared with Leu9. Higher concentrations of tenofovir alanine (TFV-Ala), a metabolite of TAF, were observed in the Leu8-expressing cells than in the Leu9-expressing cells using LC/MS/MS. Our findings suggest that the drug metabolic activity of CatA is altered by the genetic polymorphism.
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Affiliation(s)
- Soichiro Ito
- Department of Clinical Pharmacokinetics, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan; (S.I.); (M.Y.); (M.M.); (E.W.)
- Drug Metabolism and Pharmacokinetics Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc., Osaka 569-1125, Japan;
| | - Takeshi Hirota
- Pharmacy, Kyushu University Hospital, Fukuoka 812-8582, Japan;
| | - Miyu Yanai
- Department of Clinical Pharmacokinetics, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan; (S.I.); (M.Y.); (M.M.); (E.W.)
| | - Mai Muto
- Department of Clinical Pharmacokinetics, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan; (S.I.); (M.Y.); (M.M.); (E.W.)
| | - Eri Watanabe
- Department of Clinical Pharmacokinetics, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan; (S.I.); (M.Y.); (M.M.); (E.W.)
| | - Yuki Taya
- Drug Metabolism and Pharmacokinetics Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc., Osaka 569-1125, Japan;
| | - Ichiro Ieiri
- Pharmacy, Kyushu University Hospital, Fukuoka 812-8582, Japan;
- Correspondence:
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Watanabe E, Sugiyama Y, Sato H, Imanishi T, Fukuda A, Takagi K, Asano T, Migita K, Nanki T, Kotake S. An Adult-Onset Still's Disease During Pregnancy that Delivered a Neonate with Hemophagocytic Lymphohistiocytosis and Severe Liver Failure Requiring Liver Transplantation: A Case Report and Literature Review. Mod Rheumatol Case Rep 2021; 6:260-265. [PMID: 34904166 DOI: 10.1093/mrcr/rxab035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 08/05/2021] [Accepted: 09/08/2021] [Indexed: 11/12/2022]
Abstract
Adult-onset Still's disease (AOSD) is a rare systemic inflammatory disorder of unknown etiology that is categorized as a non-hereditary disease. Neonatal hemophagocytic lymphohistiocytosis (HLH) is also a rare, but potentially fatal condition. Neonatal HLH is one of the causes of neonatal acute liver failure that often requires urgent liver transplantation. The relationship between AOSD during pregnancy and neonatal HLH currently remains unclear. We encountered a case of AOSD that developed during pregnancy, and an offspring was born with neonatal HLH resulting in severe liver failure. The mother with AOSD only presented with liver dysfunction during pregnancy; however, disease activity was exacerbated after delivery. The maternal clinical course was quite severe and refractory that she required biological therapy in addition to high-dose corticosteroids and immunosuppressants. Additionally, the severe condition of the neonate with HLH and acute liver failure required intensive care with the administration of steroids and intravenous immunoglobulin treatments, and ultimately liver transplantation. This is the first case that severe maternal AOSD associated with a neonatal HLH resulted in severe clinical courses. Physicians need to be aware of the risk of a mother with AOSD delivering an offspring with neonatal HLH with potentially acute liver failure.
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Affiliation(s)
- Eri Watanabe
- Department of Rheumatology, Jichi Medical University Saitama Medical Center, Saitama, Japan.,Division of Rheumatology, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - Yohei Sugiyama
- Department of Perinatal and Neonatal Medicine, Jichi Medical University Saitama Medical Center, Saitama, Japan
| | - Hiroaki Sato
- Department of Perinatal and Neonatal Medicine, Jichi Medical University Saitama Medical Center, Saitama, Japan
| | - Toshiyuki Imanishi
- Division of Neonatology, Department of Maternal and Perinatal Center, Saitama Prefectural Children's Medical Center, Saitama, Japan
| | - Akinari Fukuda
- Organ Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - Kenjiro Takagi
- Department of Obstetrics and Gynecology, Jichi Medical University Saitama Medical Center, Saitama, Japan
| | - Tomoyuki Asano
- Department of Rheumatology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Kiyoshi Migita
- Department of Rheumatology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Toshihiro Nanki
- Division of Rheumatology, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - Shigeru Kotake
- Department of Rheumatology, Jichi Medical University Saitama Medical Center, Saitama, Japan
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Kawakubo M, Nagao M, Yamamoto A, Nakao R, Matsuo Y, Kaneko K, Watanabe E, Sakai A, Sasaki M, Sakai S. 13 N-ammonia PET-derived right ventricular longitudinal strain and myocardial flow reserve in right coronary artery disease. Eur J Nucl Med Mol Imaging 2021; 49:1870-1880. [PMID: 34897553 DOI: 10.1007/s00259-021-05647-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 09/24/2021] [Accepted: 12/03/2021] [Indexed: 11/25/2022]
Abstract
PURPOSE We developed a feature-tracking algorithm for use with electrocardiography-gated high-resolution 13 N-ammonia positron emission tomography (PET) imaging, and we hypothesized it could be used to clarify the association between right ventricular (RV) longitudinal strain (LS) and right coronary artery (RCA) ischemia. The aim of this study was to investigate the association between the reduction of regional myocardial flow reserve (MFR) in RCA territories and PET-derived LS of the RV free wall. METHODS Ninety-three patients with coronary artery stenosis > 50%, diagnosed by coronary computed tomography angiography, and 10 controls were retrospectively analyzed. RV-LS in the free wall was measured by a feature-tracking technique on the resting and stressed 13 N-ammonia PET images of horizontal long axis slices. The patients were sub-grouped according to regional MFR values at the territories of RCA, left anterior descending artery (LAD), and left circumflex coronary artery (LCx): RCA-MFR < 2.0 [n = 34], RCA-MFR ≥ 2.0 but MFR < 2.0 at LAD or LCx territories [n = 11], and MFR ≥ 2.0 for all territories [n = 48]. Stress and resting RV-LS were compared in each of the four groups. Multiple comparisons of RV-LS among the four groups were performed in the stress and resting state. RESULTS Decreased stress RV-LS in patients with an RCA-MFR < 2.0 was observed. In the patients with MFR ≥ 2.0 for all territories, the stressed RV-LS was significantly increased compared to that in the resting state. Significantly decreased RV free wall LS during adenosine stress in patients with RCA-MFR < 2.0 was observed in the other three groups. CONCLUSIONS We measured RV myocardial LS using feature tracking in cine imaging of 13 N-ammonia PET. The results of this study suggest that PET-derived stressed RV-LS is useful for detecting reduced RV myocardial motion due to ischemia in the RCA territory.
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Affiliation(s)
- Masateru Kawakubo
- Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Michinobu Nagao
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan.
| | - Atsushi Yamamoto
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Risako Nakao
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Yuka Matsuo
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Koichiro Kaneko
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Eri Watanabe
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Akiko Sakai
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Masayuki Sasaki
- Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Shuji Sakai
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
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Nishino K, Nishiko Y, Shibata M, Oda Y, Watanabe E, Niimi K, Yamamoto E, Kajiyama H. Cell surface membrane lysosome-associated membrane glycoprotein 2 promotes cell adhesion via abundant N-glycans in choriocarcinoma. Placenta 2021; 117:109-117. [PMID: 34875536 DOI: 10.1016/j.placenta.2021.11.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/10/2021] [Accepted: 11/29/2021] [Indexed: 11/15/2022]
Abstract
INTRODUCTION Lysosome-associated membrane glycoprotein 2 (LAMP-2) is a target protein for glycosylation by N-acetylglucosaminyltransferase IV (GnT-IV), which catalyzes the formation of β1,4GlcNAc branches on the mannose core of N-glycans in choriocarcinoma cells. However, the role of LAMP-2, especially when it is expressed in the cell surface membrane of choriocarcinoma cells, has not been well investigated in the progression of choriocarcinoma. This study aimed to elucidate the function of the cell surface membrane LAMP-2 in the malignancy of choriocarcinoma. METHODS We evaluated the localization of LAMP-2 in some choriocarcinoma cell lines and clinical samples of choriocarcinoma, normal placenta, hydatidiform mole, and invasive mole by flow cytometry, immunocytochemistry, and immunohistochemistry. We performed functional experiments using the knockout or overexpression model of LAMP-2 in the presence or absence of galectins. RESULTS LAMP-2 was observed in the cell surface membrane of some choriocarcinoma cell lines and tumor cells of choriocarcinoma tissue and trophoblasts of the placenta, hydatidiform mole, and invasive mole. Cell surface membrane LAMP-2 knockout decreased cell adhesion and invasion in choriocarcinoma cells. Conversely, cell surface membrane LAMP-2A overexpression increased cell adhesion and invasion. Experiments in the presence of galectins revealed that abundant N-glycans bound to the peptide core of the luminal side of the cell surface membrane LAMP-2 mediated cell adhesion of choriocarcinoma cells by interacting with galectins in the extracellular matrix (ECM). DISCUSSION Cell surface membrane LAMP-2, which is glycosylated by GnT-IV, contributes to the malignancy of choriocarcinoma by promoting cell adhesion with the ECM via abundant N-glycans.
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Affiliation(s)
- Kimihiro Nishino
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan.
| | - Yuki Nishiko
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Mayu Shibata
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Yukari Oda
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Eri Watanabe
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Kaoru Niimi
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Eiko Yamamoto
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan; Department of Healthcare Administration, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Hiroaki Kajiyama
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
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Sato T, Nakajima M, Takeishi Y, Nakajima K, Egawa K, Watanabe E, Hasegawa M. Effect of brown rice intake on obese people with exercise habits. Clin Nutr ESPEN 2021. [DOI: 10.1016/j.clnesp.2021.09.441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Kawakubo M, Nagao M, Kikuchi N, Yamamoto A, Nakao R, Matsuo Y, Kaneko K, Watanabe E, Sasaki M, Nunoda S, Sakai S. 13N-ammonia positron emission tomography-derived left-ventricular strain in patients after heart transplantation validated using cardiovascular magnetic resonance feature tracking as reference. Ann Nucl Med 2021; 36:70-81. [PMID: 34643890 DOI: 10.1007/s12149-021-01686-5] [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: 08/20/2021] [Accepted: 10/06/2021] [Indexed: 12/01/2022]
Abstract
OBJECTIVE Heart transplant rejection leads to cardiac allograft vasculopathy (CAV). 13N-ammonia positron emission tomography (PET) can be useful in detecting CAV, as it can evaluate both epicardial vessels and microvasculature. In this study, we evaluated the regional wall motion in heart transplant patients using our PET-specific feature-tracking (FT) algorithm for myocardial strain calculation and validated it using a cardiovascular magnetic resonance (CMR) FT strain as a reference. METHODS A total of 15 heart transplant patients who underwent both 13N-ammonia PET and CMR within 3 months were retrospectively enrolled. The same slice position of short-axis cine images of the middle slice of left ventricle (LV) and the same slice position of horizontal long-axis cine images were selected for the two modalities to measure the circumferential strain (CS) and longitudinal strain (LS), respectively. Based on the FT technique, time-strain curves were calculated by semi-automatic tracking of the endocardial contour on cine images throughout a cardiac cycle. The peak value in the time-strain curve was defined as the representative value. Correlations of CS and LS between PET and CMR were analyzed using Pearson correlation coefficients. The inter-modality error of strain measurements was evaluated using intraclass correlation coefficients (ICCs) with two-way random single measures. RESULTS Excellent correlations of CS and LS between PET and CMR were observed (CS: r = 0.80; p < 0.01; LS: r = 0.87; p < 0.01). Excellent ICCs were observed (0.89 and 0.85) in CS and LS derived from PET. CONCLUSIONS We propose the first PET strain showing an excellent agreement with the CMR strain and high reproducibility in measurement.
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Affiliation(s)
- Masateru Kawakubo
- Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Michinobu Nagao
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan.
| | - Noriko Kikuchi
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Atsushi Yamamoto
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Risako Nakao
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Yuka Matsuo
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Koichiro Kaneko
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Eri Watanabe
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Masayuki Sasaki
- Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Shinichi Nunoda
- Department of Therapeutic Strategy for Severe Heart Failure, Graduate School of Medicine, Tokyo Women's Medical University, Tokyo, Japan
| | - Shuji Sakai
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
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Iwami N, Kawamata M, Ozawa N, Yamamoto T, Watanabe E, Mizuuchi M, Moriwaka O, Kamiya H. P–763 Neonatal outcomes of the first 65 infants delivered after IVF treatment with progestin-primed ovarian stimulation using dienogest in patients with endometriosis. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
What is the perinatal outcome of pregnancies resulting from a controlled ovarian hyperstimulation (COH) regimen of progestin-primed ovarian stimulation (PPOS) protocol using dienogest (DNG) in patients with endometriosis?
Summary answer
No difference in mean birth weight, however preterm and low birth weight babies are significantly more in the group treated with PPOS using DNG.
What is known already
Dienogest is an oral progestin effective for the treatment of endometriosis, such as reduction of endometrial lesion and control of pain intensity with safety profile and good tolerability. We reported for the first time in the world that DNG was better than dydrogesterone (DYG) for PPOS in terms of the mature oocytes rate and the fertilization rate in patients with endometriosis. Although there have been several reports of infants born with PPOS using DYG, it is essential to report on the perinatal outcome of embryos transferred after treatment with PPOS using DNG from now on. Study design, size, duration: We prospectively investigated the perinatal outcomes of 65 newborns which were the result of using a new COH regimen; PPOS with DNG. The results were compared with perinatal outcome data of babies born between 2018 and 2020 to 815 patients who underwent assisted reproductive technology (ART) treatment at our fertility center. As for the congenital malformation rate, the data was also compared with the 2017 Japanese data bank of babies born after ART treatment.
Participants/materials, setting, methods
We studied the perinatal data of all babies born after transfer of frozen embryos acquired by COH using PPOS protocol with DNG. The rate of maternal complications during pregnancy, pregnancy duration, birth weight, congenital malformations and method of delivery were investigated. We compared the perinatal outcomes of infants born after in vitro fertilization (IVF) and frozen embryo transfer at our center during the same period.
Main results and the role of chance
Perinatal data of 65 babies (study group) were compared with the perinatal data of 840 babies born after IVF at our center, and 47807 babies born after ART in Japan, 2017. We found 3 twin and 59 singleton pregnancies in the study group, compared to 23 twins, 1 triplet and 791 singleton pregnancies during the same period at our center. Considering singletons, there was no difference in mean birthweight (study group; 2893.2±652g vs. total at our center; 3001.2±425g, respectively, p = 0.102). Preterm births (<37 weeks) were significantly more frequent in the PPOS using DNG treatment group than in total at our center (19.2% vs. 9.7%, p = 0.016). The percentage of infants with a birth weight < 2.5 kg was also significantly higher in the PPOS treatment group compared to the total at our center (22.6% vs.11.9%, p = 0.015). The Caesarean section rate was 53.2% in the study group vs. 47.1% control group of our center respectively (p = 0.353). One babies in the study group had malformations in the ocular region. There was no significant difference in congenital malformations between the study group and ART data bank in Japan, 2017 (OR 0.67, 95% CI 0.093: 4.836).
Limitations, reasons for caution
The number of babies is still low, further prospective studies including larger populations are needed to confirm the efficacy of PPOS protocol with DNG.
Wider implications of the findings: This is the first report on the perinatal outcome of babies born by a new COH method using PPOS with DNG, which is a combination of endometriosis treatment and COH for IVF. The association of endometriosis with preterm birth and low birth weight needs to be further investigated.
Trial registration number
UMIN000031111
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Affiliation(s)
- N Iwami
- Kamiya Ladies Clinic, Center of reproduction, Sapporo, Japan
| | - M Kawamata
- Kamiya Ladies Clinic, Center of reproduction, Sapporo, Japan
| | - N Ozawa
- Kamiya Ladies Clinic, Center of reproduction, Sapporo, Japan
| | - T Yamamoto
- Kamiya Ladies Clinic, Center of reproduction, Sapporo, Japan
| | - E Watanabe
- Kamiya Ladies Clinic, Center of reproduction, Sapporo, Japan
| | - M Mizuuchi
- Kamiya Ladies Clinic, Center of reproduction, Sapporo, Japan
| | - O Moriwaka
- Kamiya Ladies Clinic, Center of reproduction, Sapporo, Japan
| | - H Kamiya
- Kamiya Ladies Clinic, Center of reproduction, Sapporo, Japan
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Machino M, Gong Y, Ozaki T, Suzuki Y, Watanabe E, Imagama S, Kadomatsu K, Sakamoto K. Dermatan sulfate is an activating ligand of anaplastic lymphoma kinase. J Biochem 2021; 170:631-637. [PMID: 34270745 DOI: 10.1093/jb/mvab085] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 07/12/2021] [Indexed: 11/14/2022] Open
Abstract
Anaplastic lymphoma kinase (ALK) is a receptor tyrosine kinase (RTK) that harbors a tyrosine kinase domain in its intracellular region and is expressed in both central and peripheral nervous systems. RTKs are activated upon ligand binding and receptor clustering; however, ALK remains an orphan receptor despite its pathological significance, especially in malignancy. Recent biochemical work showed that heparan sulfate (HS), an unbranched sulfated glycan, acts as a ligand for and activates ALK. Here we show that dermatan sulfate (DS, chondroitin sulfate B) directly interacts with the extracellular N-terminal region of ALK as well as HS. The tetrasaccharide of DS was required and was sufficient for inducing autophosphorylation of ALK at tyrosine 1604, a marker for activated ALK. Interestingly, longer oligosaccharides caused enhanced activation of ALK, as was the case for HS. Our results provide a novel example of glycans as signaling molecules and shed light on the pathophysiological roles of ALK.
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Affiliation(s)
- Masaaki Machino
- Departments of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Departments of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yuanhao Gong
- Departments of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tomoya Ozaki
- Departments of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yuji Suzuki
- Departments of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Eri Watanabe
- Departments of Obesterics and Gynecology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shiro Imagama
- Departments of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kenji Kadomatsu
- Departments of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Institute for Glyco-core Research (iGCORE), Nagoya University, Nagoya, Japan
| | - Kazuma Sakamoto
- Departments of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Institute for Glyco-core Research (iGCORE), Nagoya University, Nagoya, Japan
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30
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Nishino K, Yamamoto E, Oda Y, Watanabe E, Niimi K, Yamamoto T, Kajiyama H. Short tandem repeat analysis to identify the causative pregnancy of high-risk gestational trophoblastic neoplasia: Molar versus nonmolar pregnancy and its relation to the outcome. Placenta 2021; 112:28-35. [PMID: 34247032 DOI: 10.1016/j.placenta.2021.06.015] [Citation(s) in RCA: 2] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 05/25/2021] [Accepted: 06/30/2021] [Indexed: 10/21/2022]
Abstract
INTRODUCTION Gestational trophoblastic neoplasia (GTN) include a group of malignant neoplasms that originate from the trophoblasts of placental tissue in molar or nonmolar pregnancy. Currently, it is unclear whether the prognosis of high-risk GTN or gestational choriocarcinoma succeeding molar pregnancy or that following a nonmolar one is better. Comparison of the genetic short tandem repeat (STR) patterns of the DNA extracted from the tumor, patient, and her partner allows the genetic origins of the choriocarcinoma to be distinguished - whether it is gestational or non-gestational and whether it is derived from a molar or nonmolar pregnancy in the event it is gestational. This study aimed to investigate the causative pregnancy of patients with high-risk GTN, especially those with poor outcomes, and assess the impact of the causative pregnancy on patient outcome. METHODS We evaluated 24 patients who were diagnosed with high-risk GTN between January 2000 and October 2019, including 15 cases of pathologically proven gestational choriocarcinomas and the causative pregnancy was investigated by STR analysis in which tumor DNA could be extracted. RESULTS In high-risk GTN without history of anteceding molar pregnancies, nonmolar pregnancy was the causative pregnancy, which was confirmed in three cases. Molar pregnancy appeared be the causative pregnancy of high-risk GTN in patients with a history of antecedent molar pregnancies either with or without interruption by subsequent nonmolar pregnancies prior to developing high-risk GTN. High-risk GTN in most of the evaluated deceased cases (three of four) was due to nonmolar pregnancy, while all but one case with molar pregnancy as the causative pregnancy survived. DISCUSSION STR analysis can distinguish the causative pregnancy of high-risk GTN, and nonmolar pregnancy as the causative pregnancy might have negative effects on the outcome of the disease.
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Affiliation(s)
- Kimihiro Nishino
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan.
| | - Eiko Yamamoto
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan; Department of Healthcare Administration, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Yukari Oda
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Eri Watanabe
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Kaoru Niimi
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Toshimichi Yamamoto
- Department of Legal Medicine and Bioethics, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Hiroaki Kajiyama
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
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31
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Yamamoto A, Nagao M, Watanabe E, Imamura Y, Suzuki A, Fukushima K, Ando K, Nakao R, Sakai A, Momose M, Sakai S, Hagiwara N. Prognosis and recurrence in cardiac sarcoidosis: Serial assessment of BMIPP SPECT and FDG-PET. J Nucl Cardiol 2021; 28:919-929. [PMID: 33728571 DOI: 10.1007/s12350-021-02567-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 12/01/2020] [Revised: 01/29/2021] [Accepted: 02/01/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND We analyzed 18F-Fludeoxyglucose positron emission tomography (FDG-PET) and 123I-betamethyl-p-iodophenyl-pentadecanoic acid (BMIPP) single-photon emission computed tomography (SPECT) performed for cardiac sarcoidosis (CS) patients taking prednisolone, identified recurrence by FDG-PET, and investigated BMIPP as a recurrence and prognostic factor in CS. METHODS AND RESULTS CS patients who underwent BMIPP and FDG-PET within 2 months were enrolled. The recurrence-free group included patients with standardized uptake value (SUVmax) < 4 in the myocardium consecutively for ≥ 2 years. The total BMIPP SPECT defect score (BDS) was used to estimate myocardial damage. The predictability of the initial BDS and SUVmax for major adverse cardiac events (MACE) was analyzed using Kaplan-Meier analysis. Overall, 73 patients and 250 BMIPP and FDG-PET sets were analyzed retrospectively (mean follow-up, 3.5 years). The BDS was significantly greater for the recurrence group (N = 21) vs recurrence-free group (20 ± 13 vs 14 ± 12, P = 0.041). Patients with BDS ≥16 had a significantly higher MACE rate than patients with BDS < 16 (log-rank test, P = 0.016). However, MACE occurrence was comparable between patients with SUVmax ≥ 4 and < 4. CONCLUSIONS BDS is a predictive marker of recurrence and MACE. SUV is not related to MACE. Recurrence, defined by prednisolone treatment-induced SUV variability, was observed in approximately 30% of CS patients.
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Affiliation(s)
- Atsushi Yamamoto
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1, Kawadacho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Michinobu Nagao
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1, Kawadacho, Shinjuku-ku, Tokyo, 162-8666, Japan.
| | - Eri Watanabe
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Yasutaka Imamura
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Atsushi Suzuki
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Kenji Fukushima
- Department of Diagnostic Imaging and Nuclear Medicine, Saitama Medical University International Medical Center, Saitama, Japan
| | - Kiyoe Ando
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Risako Nakao
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Akiko Sakai
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Mitsuru Momose
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1, Kawadacho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Shuji Sakai
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1, Kawadacho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Nobuhisa Hagiwara
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
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32
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Niimi K, Yamamoto E, Morita S, Morikawa M, Hattori H, Hatakeyama M, Morita M, Nishino K, Oda Y, Watanabe E, Yamamoto T, Kajiyama H, Kikkawa F. Next-generation genome sequencing of a matched normal-tumor pair from a patient with intractable gestational choriocarcinoma: A case report. Mol Clin Oncol 2021; 15:143. [PMID: 34094541 PMCID: PMC8165691 DOI: 10.3892/mco.2021.2305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 04/16/2021] [Indexed: 12/13/2022] Open
Abstract
Gestational choriocarcinoma is a gestational trophoblastic neoplasia (GTN) originating from trophoblastic cells with abnormal proliferation. Although chemotherapy is effective for treating this cancer, when patients develop chemoresistance, personalized treatment, such as the use of drugs matching their genomes, is required. The present report describes a case of intractable gestational choriocarcinoma identified using a next-generation sequencing (NGS)-based tumor panel. A 51-year-old woman was diagnosed with gestational choriocarcinoma via pathological and short tandem repeat analyses. The patient did not achieve remission despite many regimens of chemotherapy, including high-dose therapy with autologous peripheral blood stem cell transplantation. To identify drugs tailored to this particular choriocarcinoma, NGS was performed on the tumor of the patient, and the tumor genome was compared with that of the patient's blood sample using the NCC Oncopanel System. Consequently, 245 single nucleotide variants (SNVs) with a mean SNV allele frequency of 63.1% were identified. This high frequency was because the genome of the gestational choriocarcinoma contained part of the genome of the partner. Therefore, our experience of the present intractable case of choriocarcinoma suggested that matched normal-tumor pair analysis is not appropriate for treatment decisions in GTN cases. When using an NGS-based tumor panel to assess choriocarcinoma, researchers must consider whether the genomic DNA of the patient and their partner are involved in the GTN.
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Affiliation(s)
- Kaoru Niimi
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Eiko Yamamoto
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan.,Department of Healthcare Administration, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Sachi Morita
- Department of Medical Genomics Center, Nagoya University Hospital, Nagoya, Aichi 466-8550, Japan
| | - Maki Morikawa
- Department of Medical Genomics Center, Nagoya University Hospital, Nagoya, Aichi 466-8550, Japan
| | - Hikaru Hattori
- Department of Medical Technique, Nagoya University Hospital, Nagoya, Aichi 466-8550, Japan
| | - Miki Hatakeyama
- Department of Medical Genomics Center, Nagoya University Hospital, Nagoya, Aichi 466-8550, Japan
| | - Mami Morita
- Department of Medical Genomics Center, Nagoya University Hospital, Nagoya, Aichi 466-8550, Japan
| | - Kimihiro Nishino
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Yukari Oda
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Eri Watanabe
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Toshimichi Yamamoto
- Department of Legal Medicine and Bioethics, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Hiroaki Kajiyama
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Fumitaka Kikkawa
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
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Watanabe E, Kato K, Gono T, Chiba E, Terai C, Kotake S. Serum levels of galectin-3 in idiopathic inflammatory myopathies: a potential biomarker of disease activity. Rheumatology (Oxford) 2021; 60:322-332. [PMID: 32770187 DOI: 10.1093/rheumatology/keaa305] [Citation(s) in RCA: 6] [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: 01/08/2020] [Revised: 05/04/2020] [Indexed: 01/03/2023] Open
Abstract
OBJECTIVES Galectin-3 is involved in various biological activities, including immune activations and fibrosis. Idiopathic inflammatory myopathies (IIMs) are autoimmune diseases of unknown aetiology, often complicated by interstitial lung disease (ILD). The aim of this study was to evaluate the expression of galectin-3 in sera and tissues of patients with IIM and assess the associations of galectin-3 with patient characteristics and disease activity. RESULTS Serum galectin-3 levels were significantly higher in IIM patients than in healthy controls. The serum galectin-3 levels positively correlated with serum levels of inflammatory markers and proinflammatory cytokines/chemokines and the Myositis Intention-to-Treat Activity Index. Stratification analysis revealed that patients with IIM-associated ILD (IIM-ILD) had significantly higher levels of serum galectin-3 than those without IIM-ILD. In addition, patients with acute/subacute interstitial pneumonia had significantly higher levels of serum galectin-3 than those with chronic interstitial pneumonia. Furthermore, serum galectin-3 levels in IIM-ILD patients correlated with the radiological assessments of parenchymal lung involvement and treatment response. Immunohistochemical analysis revealed that galectin-3 was expressed in inflammatory cells of myositis and dermatitis sections, whereas in ILD sections, galectin-3 was expressed in interstitial fibrosis and inflammatory cells. CONCLUSION Galectin-3 may be involved in the pathogenesis of inflammatory and fibrotic conditions in IIM and can serve as a potential biomarker of disease activity, especially in patients with IIM-ILD.
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Affiliation(s)
- Eri Watanabe
- Department of Rheumatology, Saitama Medical Center, Jichi Medical University, Saitama
| | - Kazunori Kato
- Department of Biomedical Engineering, Faculty of Science and Engineering, Toyo University, Saitama
| | - Takahisa Gono
- Department of Rheumatology, Saitama Medical Center, Jichi Medical University, Saitama.,Department of Allergy and Rheumatology, Nippon Medical School Graduate School of Medicine, Tokyo
| | - Emiko Chiba
- Department of Radiology, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Chihiro Terai
- Department of Rheumatology, Saitama Medical Center, Jichi Medical University, Saitama
| | - Shigeru Kotake
- Department of Rheumatology, Saitama Medical Center, Jichi Medical University, Saitama
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Miyachi H, Kanamitsu K, Ishii M, Watanabe E, Katsuyama A, Otsuguro S, Yakushiji F, Watanabe M, Matsui K, Sato Y, Shuto S, Tadokoro T, Kita S, Matsumaru T, Matsuda A, Hirose T, Iwatsuki M, Shigeta Y, Nagano T, Kojima H, Ichikawa S, Sunazuka T, Maenaka K. Structure, solubility, and permeability relationships in a diverse middle molecule library. Bioorg Med Chem Lett 2021; 37:127847. [PMID: 33571648 DOI: 10.1016/j.bmcl.2021.127847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 01/07/2021] [Accepted: 01/30/2021] [Indexed: 10/22/2022]
Abstract
To develop methodology to predict the potential druggability of middle molecules, we examined the structure, solubility, and permeability relationships of a diverse library (HKDL ver.1) consisting of 510 molecules (359 natural product derivatives, 76 non-natural products, 46 natural products, and 29 non-natural product derivatives). The library included peptides, depsipeptides, macrolides, and lignans, and 476 of the 510 compounds had a molecular weight in the range of 500-2000 Da. The solubility and passive diffusion velocity of the middle molecules were assessed using the parallel artificial membrane permeability assay (PAMPA). Quantitative values of solubility of 471 molecules and passive diffusion velocity of 287 molecules were obtained, and their correlations with the structural features of the molecules were examined. Based on the results, we propose a method to predict the passive diffusion characteristics of middle molecules from their three-dimensional structural features.
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Affiliation(s)
- Hiroyuki Miyachi
- Lead Exploration Unit, Drug Discovery Initiative, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| | - Kayoko Kanamitsu
- Lead Exploration Unit, Drug Discovery Initiative, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Mayumi Ishii
- Lead Exploration Unit, Drug Discovery Initiative, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Eri Watanabe
- Lead Exploration Unit, Drug Discovery Initiative, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Akira Katsuyama
- Center for Research and Education on Drug Discovery, Faculty of Pharmaceutical Science, Hokkaido University, Kita 12, Nishi 6, Kita ku, Sapporo 060 0812, Japan; Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
| | - Satoko Otsuguro
- Center for Research and Education on Drug Discovery, Faculty of Pharmaceutical Science, Hokkaido University, Kita 12, Nishi 6, Kita ku, Sapporo 060 0812, Japan
| | - Fumika Yakushiji
- Center for Research and Education on Drug Discovery, Faculty of Pharmaceutical Science, Hokkaido University, Kita 12, Nishi 6, Kita ku, Sapporo 060 0812, Japan; Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
| | - Mizuki Watanabe
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
| | - Kouhei Matsui
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
| | - Yukina Sato
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
| | - Satoshi Shuto
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
| | - Takashi Tadokoro
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
| | - Shunsuke Kita
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
| | - Takanori Matsumaru
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
| | - Akira Matsuda
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
| | - Tomoyasu Hirose
- Ōmura Satoshi Memorial Research Institute, Kitasato University, Shirokane 5-9-1, Minato-ku, Tokyo 108-8641, Japan
| | - Masato Iwatsuki
- Ōmura Satoshi Memorial Research Institute, Kitasato University, Shirokane 5-9-1, Minato-ku, Tokyo 108-8641, Japan
| | - Yasuteru Shigeta
- Center for Computational Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - Tetsuo Nagano
- Drug Discovery Initiative, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hirotatsu Kojima
- Drug Discovery Initiative, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Satoshi Ichikawa
- Center for Research and Education on Drug Discovery, Faculty of Pharmaceutical Science, Hokkaido University, Kita 12, Nishi 6, Kita ku, Sapporo 060 0812, Japan; Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan.
| | - Toshiaki Sunazuka
- Ōmura Satoshi Memorial Research Institute, Kitasato University, Shirokane 5-9-1, Minato-ku, Tokyo 108-8641, Japan.
| | - Katsumi Maenaka
- Center for Research and Education on Drug Discovery, Faculty of Pharmaceutical Science, Hokkaido University, Kita 12, Nishi 6, Kita ku, Sapporo 060 0812, Japan; Global Station for Biosurfaces and Drug Discovery, Hokkaido University, Kita 12, Nishi 6, Kita ku, Sapporo 060 0812, Japan.
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35
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Kikuchi N, Watanabe E, Nagao M, Yoshizawa S, Kobashigawa T, Hagiwara N. Acute Myocarditis Complicating Systemic Lupus Erythematosus: Detection and Evolution of Transmural Spiral Late Gadolinium Enhancement on Cardiac Magnetic Resonance Imaging. Circ Cardiovasc Imaging 2021; 14:e011319. [PMID: 33586448 DOI: 10.1161/circimaging.120.011319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Noriko Kikuchi
- Department of Cardiology (N.K., E.W., N.H.), Tokyo Women's Medical University, Tokyo, Japan
| | - Eri Watanabe
- Department of Cardiology (N.K., E.W., N.H.), Tokyo Women's Medical University, Tokyo, Japan
| | - Michinobu Nagao
- Department of Diagnostic Imaging and Nuclear Medicine (M.N.), Tokyo Women's Medical University, Tokyo, Japan
| | - Saeko Yoshizawa
- Department of Pathology (S.Y.), Tokyo Women's Medical University, Tokyo, Japan
| | - Tsuyoshi Kobashigawa
- Department of Rheumatology, Saitama Medical Center, Jichi Medical University, Saitama, Japan (T.K.)
| | - Nobuhisa Hagiwara
- Department of Cardiology (N.K., E.W., N.H.), Tokyo Women's Medical University, Tokyo, Japan
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Watanabe E, Ido N, Saito T, Kato H, Terashi H, Aizawa H. [Posterior reversible encephalopathy syndrome during intravenous immunoglobulin therapy in Guillain-Barré syndrome]. Rinsho Shinkeigaku 2021; 61:12-17. [PMID: 33328417 DOI: 10.5692/clinicalneurol.cn-001461] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A 63-year-old woman was diagnosed with Guillain-Barré syndrome (GBS), and intravenous immunoglobulin (IVIg) therapy was initiated. On the second day of IVIg therapy, she became less alert (JCS III-200) and had hyponatremia. Brain MRI showed vasogenic edema in bilateral occipital lobes, which disappeared afterwards. Her clinical course and MRI findings were consistent with those of posterior reversible encephalopathy syndrome (PRES). As a result of considering the timing of the onset of GBS and PRES and the degree of hyponatremia and hypertension in some documented patients, the cause of PRES onset in this case is considered to be IVIg therapy itself and IVIg therapy-induced hyponatremia.
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Affiliation(s)
- Eri Watanabe
- Department of Neurology, Tokyo Medical University
| | - Nobuhiro Ido
- Department of Neurology, Tokyo Medical University
| | - Tomoko Saito
- Department of Neurology, Tokyo Medical University
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Iwami N, Kawamata M, Ozawa N, Yamamoto T, Watanabe E, Mizuuchi M, Moriwaka O, Kamiya H. New treatment strategy for endometriosis using progestin-primed ovarian stimulation with dienogest: A prospective cohort study, comparison of dienogest versus dydrogesterone. Reprod Biol 2020; 21:100470. [PMID: 33333410 DOI: 10.1016/j.repbio.2020.100470] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 11/11/2020] [Accepted: 11/29/2020] [Indexed: 10/22/2022]
Abstract
Dienogest (DNG) is an oral progestin effective for the treatment of symptomatic endometriosis, such as reduction of endometrial lesion and control of pain intensity. Progestin-primed ovarian stimulation (PPOS) is a new controlled ovarian hyperstimulation (COH) regimen, and several reports have shown that dydrogesterone (DYG) is an appropriate progestin for PPOS. The purpose of this study was to evaluate the efficacy of DNG in patients undergoing PPOS during COH in comparison with DYG. This was a prospective, cohort, parallel-group, non-inferiority trial of 150 women with endometriosis undergoing assisted reproductive technology between February 2018 and May 2020 at the single fertility center. The assignment to each protocol was based on the optimal treatment for each patient. Patients taking DNG 2 mg continuously were assigned in the DNG group(n = 73). The other patients were allocated in DYG group(n = 77). All viable embryos were cryopreserved for subsequent transfer. The main outcome measures were the mature oocyte and fertilization rates. During this study, no premature LH surge was detected. A smaller number of oocytes were retrieved in the DNG group than in the DYG group (6.18 ± 3.60 vs. 9.85 ± 5.77); however, the rate of mature oocytes was significantly higher in the DNG group than in the DYG group (89.1 % vs. 78.9 %). The fertilization rate was comparable between two groups. Therefore, patients taking DNG for PPOS can continue endometriosis treatment and obtain good-quality embryos during COH. Further prospective randomized-controlled trial should be performed to confirm of this novel strategy of DNG.
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Affiliation(s)
- Nanako Iwami
- Kamiya Ladies Clinic, 2-1, Nishi 2, Kita 3, Chuo-ku, Sapporo, Hokkaido, 060-0003, Japan.
| | - Miho Kawamata
- Kamiya Ladies Clinic, 2-1, Nishi 2, Kita 3, Chuo-ku, Sapporo, Hokkaido, 060-0003, Japan
| | - Naoko Ozawa
- Kamiya Ladies Clinic, 2-1, Nishi 2, Kita 3, Chuo-ku, Sapporo, Hokkaido, 060-0003, Japan
| | - Takahiro Yamamoto
- Kamiya Ladies Clinic, 2-1, Nishi 2, Kita 3, Chuo-ku, Sapporo, Hokkaido, 060-0003, Japan
| | - Eri Watanabe
- Kamiya Ladies Clinic, 2-1, Nishi 2, Kita 3, Chuo-ku, Sapporo, Hokkaido, 060-0003, Japan
| | - Masahito Mizuuchi
- Kamiya Ladies Clinic, 2-1, Nishi 2, Kita 3, Chuo-ku, Sapporo, Hokkaido, 060-0003, Japan
| | - Osamu Moriwaka
- Kamiya Ladies Clinic, 2-1, Nishi 2, Kita 3, Chuo-ku, Sapporo, Hokkaido, 060-0003, Japan
| | - Hirobumi Kamiya
- Kamiya Ladies Clinic, 2-1, Nishi 2, Kita 3, Chuo-ku, Sapporo, Hokkaido, 060-0003, Japan
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Otsuki H, Arashi H, Nakazawa M, Inagaki Y, Ebihara S, Tanaka K, Nakao M, Watanabe E, Ogawa H, Yamaguchi J, Hagiwara N. Aggressive lipid lowering therapy with pitavastatin and ezetimibe improve cardiovascular outcomes in patients with ST segment elevation myocardial infarction: insights from the HIJ-PROPER Study. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Aims
The purpose of this study was to evaluate the effect of aggressive lipid-lowering therapy with pitavastatin and ezetimibe in patients with ST-segment elevation myocardial infarction (STEMI) as compared with those with other classification of an acute coronary syndrome (ACS) including non-STEMI (NSTEMI) and unstable angina pectoris (UA).
Methods
This is a post hoc sub-analysis of the HIJ-PROPER study. In the original study, ACS patients with dyslipidemia were randomized to either pitavastatin + ezetimibe therapy or pitavastatin monotherapy. In the present analysis, we divided HIJ-PROPER participants into the STEMI group (n=880) and NSTEMI + UA group (n=841). Cardiovascular events were analyzed between the two groups. The primary endpoint was a composite of major advanced cardiovascular events (MACE; all-cause death, non-fatal myocardial infarction, non-fatal stroke, unstable angina pectoris, and ischemia-driven revascularization)
Result
During median follow-up period of 3.4 years, the cumulative incidence of the primary endpoint in STEMI group was 31.9% in the pitavastatin+ezetimibe therapy, compared with 39.7% in the pitavastatin-monotherapy (HR, 0.77; 95% CI, 0.62–0.97; p=0.02). However, there was no effect of pitavastatin+ezetimibe therapy on the primary endpoint in the NSTEMI + UA group. Concerning the individual components of the primary endpoint in STEMI group, the percentage of occurrence of all-cause death was significantly lower in the pitavastatin+ezetimibe therapy compared to pitavastatin mono-therapy (14 patients (3.2%) vs. 31 patients (6.9%), respectively; HR, 0.45; 95% CI, 0.23–1.84, p=0.01). Multivariate analysis revealed that use of ezetimibe and prevalence of diabetes mellitus at baseline were independent predictors of primary endpoints in STEMI group (HR, 0.79; 95% CI, 0.63–0.99; p=0.04 for use of ezetimibe, HR 1.54; 95% CI, 1.22–1.94, p=0.0003 for diabetes mellitus).
Conclusion
Patients with pitavastatin+ezetimibe therapy as compared with pitavastatin-monotherapy had lower cardiovascular event in patients with ST-segment elevation myocardial infarction.
Kaplan-Meier curves for primary endpoint
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- H Otsuki
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - H Arashi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - M Nakazawa
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - Y Inagaki
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - S Ebihara
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - K Tanaka
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - M Nakao
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - E Watanabe
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - H Ogawa
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - J Yamaguchi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - N Hagiwara
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
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Ohtake H, Ishii J, Nishimura H, Kawai H, Muramatsu T, Harada M, Motoyama S, Watanabe E, Ozaki Y, Iwata M. Prospective validation of 0-hour/1-hour algorithm using high-sensitivity cardiac troponin I in Japanese patients presenting to emergency department. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The diagnostic performance of 0-hour/1-hour algorithm using high-sensitivity cardiac troponin I (hsTnI) for non-ST-segment elevation myocardial infarction (NSTEMI) has not been evaluated in an Asian population.
Purpose
We aimed to prospectively validate the 0-hour/1-hour algorithm using hsTnI in a Japanese population.
Method
We enrolled 754 Japanese patients (mean age of 70 years, 395 men) presenting to our emergency department with symptoms suggestive of NSTEMI. The hsTnI concentration was measured using the Siemens ADVIA Centaur hsTnI assay at presentation and after 1 hour. Patients were divided into three groups according to the algorithm: hsTnI below 3 ng/L (only applicable if chest pain onset >3 hours) or below 6 ng/L and delta 1 hour below 3 ng/L were the “rule-out” group; hsTnI at least 120 ng/L or delta 1 hour at least 12 ng/L were in the “rule-in” group; the remaining patients were classified as the “observe” group. Based on the Fourth Universal Definition of Myocardial Infarction, the final diagnosis was adjudicated by 2 independent cardiologists using all available information, including coronary angiography, coronary computed tomography, and follow-up data. Safety of rule-out was quantified by the negative predictive value (NPV) for NSTEMI, accuracy of rule-in by the positive predictive value (PPV), and overall efficacy by the proportion of patients triaged towards rule-out or rule-in within 1 hour.
Results
Prevalence of NSTEMI was 6.5%. The safety of rule-out (NPV 100%), accuracy of rule-in (PPV 26%), and overall efficacy (54%) were shown in Figure.
Conclusion
The 0-hour/1-hour algorithm using hsTnI is very safe and effective in triaging Japanese patients with suspected NSTEMI.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- H Ohtake
- Fujita Health University, Toyoake, Japan
| | - J Ishii
- Fujita Health University, Toyoake, Japan
| | | | - H Kawai
- Fujita Health University, Toyoake, Japan
| | | | - M Harada
- Fujita Health University, Toyoake, Japan
| | - S Motoyama
- Fujita Health University, Toyoake, Japan
| | - E Watanabe
- Fujita Health University, Toyoake, Japan
| | - Y Ozaki
- Fujita Health University, Toyoake, Japan
| | - M Iwata
- Fujita Health University, Toyoake, Japan
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Harada M, Nomura Y, Nishimura A, Motoike Y, Koshikawa M, Watanabe E, Izawa H, Ozaki Y. Factors associated with silent cerebral events during catheter ablation for atrial fibrillation in the era of uninterrupted oral anticoagulation therapy. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
A silent cerebral event (SCE), detected by brain magnetic resonance imaging (MRI), is defined as an acute new brain lesion without clinically apparent neurological deficit, and is frequently observed after catheter ablation in atrial fibrillation (AF) patients. Although the small number of SCEs does not cause neurocognitive dysfunction, the greater volume and/or larger number of SCE lesions are reportedly related to neuropsychological decline; SCE incidence may be a surrogate marker for the potential thromboembolic risk. Thus, strategies to reduce SCEs would be beneficial. Uninterrupted oral anticoagulation strategy for peri-procedural period reportedly reduced the risk of SCEs, but the incidence hovers at 10% to 30%. We sought factors associated with SCEs during catheter ablation for AF in patients with peri-procedural uninterrupted oral anticoagulation (OAC) therapy.
Methods
AF patients undergoing catheter ablation were eligible (n=255). All patients took non-vitamin K antagonist oral anticoagulants (NOACs) or vitamin K antagonist (VKA) for peri-procedural OAC (>4 weeks) without interruption during the procedure. Brain MRI was performed within 2 days after the procedure to detect SCEs. Clinical characteristics and procedure-related parameters were compared between patients with and without SCEs.
Results
SCEs were detected in 59 patients (23%, SCE[+]) but not in 196 patients (77%, SCE[-]). Average age was higher in SCE[+] than SCE[-] (66±10 years vs. 62±12 years, p<0.05). Persistent AF prevalence, CHADS2/CHA2DS2-VASc scores, and serum NT-ProBNP levels increased in SCE[+] vs. SCE[-]. In transthoracic/transesophageal echocardiography, left-atrial dimension (LAD) was larger and AF rhythm/spontaneous echo contrast were more frequently observed in SCE[+] than SCE[-]. SCE[+] had lower initial activated clotting time (ACT) before unfractionated heparin (UFH) injection and longer time to reach optimal ACT (>300 sec) before trans-septal puncture than SCE [-]. In multivariate analysis, LAD, initial ACT before UFH injection, and time to reach optimal ACT were predictors for SCEs.
Conclusions
LAD and intra-procedural ACT kinetics affect SCEs during the procedure in patients with uninterrupted OAC for AF ablation. Shortening time to achieve optimal ACT during the procedure may reduce the risk of SCEs.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- M Harada
- Fujita Health University, Toyoake, Japan
| | - Y Nomura
- Fujita Health University, Toyoake, Japan
| | | | - Y Motoike
- Fujita Health University, Toyoake, Japan
| | | | - E Watanabe
- Fujita Health University, Toyoake, Japan
| | - H Izawa
- Fujita Health University, Toyoake, Japan
| | - Y Ozaki
- Fujita Health University, Toyoake, Japan
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Ishii J, Takahashi H, Nishimura H, Fujiwara W, Ohta M, Kawai H, Muramatsu T, Harada M, Yamada A, Naruse H, Motoyama S, Watanabe E, Izawa H, Ozaki Y. Circulating presepsin (soluble CD14 subtype) as a novel marker of mortality in patients treated at medical cardiac intensive care units. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Presepsin, a subtype of soluble CD14, is an inflammatory marker, which largely reflects monocyte activation. The association between presepsin levels and mortality in patients treated at medical cardiac intensive care units (CICUs) remains poorly known.
Objective
We aimed to understand the prognostic value of presepsin levels on admission to medical CICUs for mortality.
Methods
We prospectively studied 1636 heterogeneous patients (median age; 71 years) treated at medical (non-surgical) CICUs. Patients with stage 5 chronic kidney disease (estimated glomerular filtration rate [eGFR] <15 mL/min/1.73 m2) were excluded. Acute coronary syndrome was present in 46% of the patients, and acute decompensated heart failure in 36%. Upon admission, baseline plasma presepsin levels were measured. The primary endpoint was all-cause death.
Results
During a mean follow-up period of 44.6 months after admission, there were 323 (19.7%) deaths. Patients who died were older (median: 75 vs. 71 years, P<0.0001); had higher levels of presepsin (194 vs. 110 pg/mL, P<0.0001), B-type natriuretic peptide (BNP: 520 vs. 144 pg/mL, P<0.0001), high-sensitivity C-reactive protein (hsCRP: 4.7 vs. 2.0 mg/L, P<0.0001), and sequential organ failure assessment (SOFA) score (3 vs. 2, P<0.0001); and had lower levels of eGFR (55 vs. 69 mL/min/1.73m2, P<0.0001) and left ventricular ejection fraction (46% vs. 52%, P<0.0001) than those of the survivors. Multivariate Cox regression analyses revealed presepsin levels as independent predictors of all-cause deaths when assessed as either continuous variables (relative risk [RR] 3.33 per 10-fold increment; P<0.0001) or variables categorized according to quartiles (RR quartile 4 vs. 1, 3.60; P<0.0001). Quartiles of presepsin levels were significantly (P<0.0001) associated with increased risk of mortality (Figure). Adding presepsin levels to a baseline model that included established risk factors, BNP, and hsCRP further enhanced reclassification (P=0.009) and discrimination (P=0.0008) beyond that of the baseline model alone.
Conclusions
Circulating concentration of presepsin on admission may be a potent and independent predictor of mortality, and it may improve the risk stratification of patients admitted at medical CICUs.
Presepsin quartiles and mortality
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- J Ishii
- Dept of Joint Research Laboratory of Clinical Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - H Takahashi
- Division of Statistics, Fujita Health University School of Medicine, Toyoake, Japan
| | - H Nishimura
- Dept of Cardiology, Fujita Health University School of Medicine, Toyoake, Japan
| | - W Fujiwara
- Dept of Cardiology, Banbuntane Hotokukai Hospital, Nagoya, Japan
| | - M Ohta
- Dept of Cardiology, Fujita Health University School of Medicine, Toyoake, Japan
| | - H Kawai
- Dept of Cardiology, Fujita Health University School of Medicine, Toyoake, Japan
| | - T Muramatsu
- Dept of Cardiology, Fujita Health University School of Medicine, Toyoake, Japan
| | - M Harada
- Dept of Cardiology, Fujita Health University School of Medicine, Toyoake, Japan
| | - A Yamada
- Dept of Cardiology, Fujita Health University School of Medicine, Toyoake, Japan
| | - H Naruse
- Dept of Joint Research Laboratory of Clinical Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - S Motoyama
- Dept of Cardiology, Fujita Health University School of Medicine, Toyoake, Japan
| | - E Watanabe
- Dept of Cardiology, Fujita Health University School of Medicine, Toyoake, Japan
| | - H Izawa
- Dept of Cardiology, Banbuntane Hotokukai Hospital, Nagoya, Japan
| | - Y Ozaki
- Dept of Cardiology, Fujita Health University School of Medicine, Toyoake, Japan
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Kubo T, Takano H, Takayama M, Doi Y, Minami Y, Ebato M, Inomata T, Katoh T, Okamoto R, Chikamori T, Watanabe E, Furugen A, Maekwa Y, Shimizu W, Kitaoka H. Baseline clinical features in a large-scale registration survey of patient with hypertrophic cardiomyopathy throughout Japan: J-HCM registry study. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Hypertrophic cardiomyopathy (HCM) is a most prevalent primary myocardial disorder with heterogeneous clinical features. However, there have been few studies on clinical features of HCM as a prospective cohort. In 2015, we established a large-scale registration survey of patients with HCM throughout Japan, named J-HCM registry study.
Purpose
The aim of this study was to clarify the clinical features of Japanese patients with HCM.
Methods
J-HCM registry study is a prospective, multicenter investigation, consisting of 24 hospitals. This time, we present the baseline clinical characteristics in this survey.
Results
Total 1484 patients were registered. The ages at registration and at diagnosis were 65±15 and 56±17 years, respectively, and 806 patients (54%) were men. Majority of the patients (95%) was NYHA class I or II. With regard to subtypes of HCM, there were 526 patients (36%) in the HCM with left ventricular (LV) outflow tract obstruction, 126 patients (8%) in the mid-ventricular obstruction, 57 patients (4%) in the end-stage phase characterized by LV ejection fraction <50%, and 197 patients (14%) in apical HCM. At registration, 80 patients (6%) had prior successful recovery from sustained ventricular tachycardia or ventricular fibrillation, 162 patients (11%) suffered from heart failure hospitalization, and 64 patients (4%) had history of embolic event. Regarding invasive treatment, 160 patients (10%) had prior septal reduction therapy and 162 patients (11%) had ICD implantation. According to the 2014 European Society of Cardiology Guidelines on sudden cardiac death (SCD) prevention, the study patients were divided into 3 categories by the HCM Risk-SCD calculator: patients distribution, 4% in the high risk group (≥6% calculated HCM Risk-SCD at 5 years), 7% in the intermediate risk group (4% to <6%), 69% in the low risk group (<4%), and 16% in the patients with extreme characteristics (Figure 1).
Conclusions
In this multicenter registration survey of patients with HCM, the baseline clinical characteristics were almost similar to several retrospective large-scale cohorts in Western countries except older age and less symptomatic state. This study will provide important knowledge regarding management of HCM.
Figure 1
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- T Kubo
- Kochi Medical School, Kochi, Japan
| | - H Takano
- Nippon Medical School Teaching Hospital, Tokyo, Japan
| | - M Takayama
- Sakakibara Heart Institute, Fucyu Tokyo, Japan
| | - Y.L Doi
- Kochi Medical School, Kochi, Japan
| | - Y Minami
- Tokyo Women's Medical University, Tokyo, Japan
| | - M Ebato
- Showa University Fujigaoka Hospital, Yokohama, Japan
| | - T Inomata
- Kitasato University School of Medicine, Sagamihara, Japan
| | - T Katoh
- Kyoto University, Kyoto, Japan
| | - R Okamoto
- Mie University Graduate School of Medicine, Tsu, Japan
| | - T Chikamori
- Tokyo Medical University Hospital, Tokyo, Japan
| | - E Watanabe
- Fujita Health University School of Medicine, Toyoake, Japan
| | - A Furugen
- Sapporo Cardio Vascular Clinic, Sapporo, Japan
| | - Y Maekwa
- Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - W Shimizu
- Nippon Medical School Teaching Hospital, Tokyo, Japan
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Yamamoto A, Nagao M, Ando K, Nakao R, Sakai A, Watanabe E, Momose M, Sato K, Sakai S, Hagiwara N. High-risk plaque burdens myocardial flow reserve in intermediate coronary artery disease: hybrid analysis of 13N-ammonia PET and coronary CT angiography. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
13N-ammonia PET (NH3-PET) can detect myocardial perfusion abnormalities in patients with coronary artery disease (CAD) and also obtain diagnostic quantitative values of absolute myocardial blood flow and myocardial flow reserve (MFR). Low MFR (MFR<2.0) is an independent prognostic factor for major adverse cardiac event in patients with ischemic and non-ischemic heart disease. A feature of low attenuation plaque (LAP) on coronary CT angiography (CCTA) has been known as high-risk plaque (HRP) for acute coronary syndrome even if there is no significant coronary stenosis. The presence of HRP potentially adversely affects MFR, but the hypothesis has not been elucidated.
Purpose
We aimed to investigate the affect of LAP to MFR in intermediate CAD.
Methods
One hundred five patients (age 67±9 years, 65% male) with CAD underwent NH3-PET and CCTA within 6 months between April 2015 and March 2019 were enrolled. Based on the results of CCTA, mild and moderate stenosis were defined as 1% to 49% and 50% to 69% stenosis. Ischemic territories for major three vessels were identified by stress/rest NH3-PET images. Finally, 194 coronary arteries with mild to moderate stenosis corresponding to non-ischemic territory were analyzed in this study. LAP was defined as plaques containing CT value less than 90HU. Partially calcified plaques were included in LAP. Entirely calcification plaque without LAP was defined as calcified plaque. MFR for major three vessels were calculated from dynamic scan at stress/rest NH3-PET.
Results
CCTA showed 80 coronary arteries with LAP (41%), 104 coronary arteries with calcified plaque (54%), 102 vessels with mild stenosis (53%), and 92 vessels with moderate stenosis (47%). MFRs for coronary arteries with LAP were significantly lower than those without LAP (2.1±0.6 vs 2.5±0.6, p<0.0001). The significant difference in MFR between with and without LAP was observed in both mild and moderate stenosis (mild: 2.0±0.6 vs 2.5±0.6, p=0.0015, moderate: 2.1±0.6 vs 2.5±0.6, p<0.0001). In contrast, coronary arteries with calcified plaque had significantly higher MFR than those without (2.5±0.6 vs 2.1±0.6, p<0.0001).
In 58 coronary arteries with MFR<2.0, 71% (41/58) had LAP and 24% (14/58) had calcified plaque. In 136 coronary arteries with MFR≥2.0, 29% (39/136) had LAP and 66% (90/136) had calcified plaque. LAP was significantly more frequent in the former and calcified plaque was significantly more frequent in the latter.
Conclusion
The presence of LAP burdens MFR in mild to moderate CAD. On the other hand, calcified plaque alone had no adverse effect on MFR. LAP is an important sign in CAD risk assessment even without significant coronary stenosis.
MFR and stress MPI
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- A Yamamoto
- Tokyo Women's Medical University Hospital, Shinjyuku, Japan
| | - M Nagao
- Tokyo Women's Medical University Hospital, Shinjyuku, Japan
| | - K Ando
- Tokyo Women's Medical University Hospital, Shinjyuku, Japan
| | - R Nakao
- Tokyo Women's Medical University Hospital, Shinjyuku, Japan
| | - A Sakai
- Tokyo Women's Medical University Hospital, Shinjyuku, Japan
| | - E Watanabe
- Tokyo Women's Medical University Hospital, Shinjyuku, Japan
| | - M Momose
- Tokyo Women's Medical University Hospital, Shinjyuku, Japan
| | - K Sato
- Tokyo Women's Medical University Hospital, Shinjyuku, Japan
| | - S Sakai
- Tokyo Women's Medical University Hospital, Shinjyuku, Japan
| | - N Hagiwara
- Tokyo Women's Medical University Hospital, Shinjyuku, Japan
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Kojima T, Nagao M, Yabuuchi H, Yamasaki Y, Shirasaka T, Kawakubo M, Fukushima K, Kato T, Yamamoto A, Nakao R, Sakai A, Watanabe E, Sakai S. New transluminal attenuation gradient derived from dynamic coronary CT angiography: diagnostic ability of ischemia detected by 13N-ammonia PET. Heart Vessels 2020; 36:433-441. [PMID: 33048244 DOI: 10.1007/s00380-020-01712-y] [Citation(s) in RCA: 4] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 10/02/2020] [Indexed: 11/30/2022]
Abstract
Coronary computed tomography angiography (CCTA) has low specificity for detecting significant functional coronary stenosis. We developed a new transluminal attenuation gradient (TAG)-derived dynamic CCTA with dose modulation, and we investigated its diagnostic performance for myocardial ischemia depicted by 13N-ammonia positron emission tomography (PET). Data from 48 consecutive patients who had undergone both dynamic CCTA and 13N-ammonia PET were retrospectively analyzed. Dynamic CCTA was continuously performed in mid-diastole for five cardiac cycles with prospective electrocardiography gating after a 10-s contrast medium injection. One scan of the dynamic CCTA was performed as a boost scan for conventional CCTA at the peak phase of the ascending aorta. Absolute TAG values at five phases around the boost scan were calculated. The dynamic TAG index (DTI) was defined as the ratio of the maximum absolute TAG to the standard deviation of five TAG values. We categorized the coronary territories as non-ischemia or ischemia based on the 13N-ammonia PET results. A receiver operating characteristic (ROC) analysis was performed to determine the optimal cutoff of the DTI for identifying ischemia. The DTI was significantly higher for ischemia compared to non-ischemia (8.8 ± 3.9 vs. 4.6 ± 2.0, p < 0.01). The ROC analysis revealed 5.60 as the optimal DTI cutoff to detect ischemia, with an area under the curve of 0.87, 85.7% sensitivity, and 76.2% specificity. TAG provided no additional diagnostic value for the detection of ischemia. We propose the DTI derived from dynamic CCTA as a novel coronary flow index. The DTI is a valid technique for detecting functional coronary stenosis.
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Affiliation(s)
- Tsukasa Kojima
- Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Division of Radiology, Department of Medical Technology, Kyushu University Hospital, Fukuoka, Japan
| | - Michinobu Nagao
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan.
| | - Hidetake Yabuuchi
- Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yuzo Yamasaki
- Departments of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Takashi Shirasaka
- Division of Radiology, Department of Medical Technology, Kyushu University Hospital, Fukuoka, Japan
| | - Masateru Kawakubo
- Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kenji Fukushima
- Department of Nuclear Medicine, Saitama Medical University, Saitama, Japan
| | - Toyoyuki Kato
- Division of Radiology, Department of Medical Technology, Kyushu University Hospital, Fukuoka, Japan
| | - Atsushi Yamamoto
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Risako Nakao
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Akiko Sakai
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Eri Watanabe
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Shuji Sakai
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
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Konuma T, Kohara C, Watanabe E, Takahashi S, Ozawa G, Inomata K, Suzuki K, Mizukami M, Nagai E, Okabe M, Isobe M, Kato S, Oiwa-Monna M, Takahashi S, Tojo A. Impact of Intestinal Microbiota on Reconstitution of Circulating Monocyte, Dendritic Cell, and Natural Killer Cell Subsets in Adults Undergoing Single-Unit Cord Blood Transplantation. Biol Blood Marrow Transplant 2020; 26:e292-e297. [PMID: 32798658 DOI: 10.1016/j.bbmt.2020.08.009] [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: 07/03/2020] [Revised: 08/05/2020] [Accepted: 08/06/2020] [Indexed: 02/02/2023]
Abstract
The intestinal microbiota plays a fundamental role in the development of host innate immune cells, such as monocytes, dendritic cells (DCs), and natural killer (NK) cells. We examined the association between intestinal microbiota and subsequent immune reconstitution of circulating monocyte, DC, and NK cell subsets in 38 adult patients undergoing single-unit cord blood transplantation (CBT). A higher diversity of intestinal microbiota at 1 month was significantly associated with higher counts of plasmacytoid DCs at 7 months after CBT, as measured by the Chao1 index. Principal coordinate analysis of unweighted UniFrac distances showed significant differences between higher and lower classical monocyte reconstitution at 7 months post-CBT. The families Neisseriaceae, Burkholderiaceae, Propionibacteriaceae, and Coriobacteriaceae were increased in higher classical monocyte reconstitution at 7 months post-CBT, whereas the family Bacteroidaceae was increased in lower classical monocyte reconstitution at 7 months post-CBT. These data show that intestinal microbiota composition affects immune reconstitution of classical monocyte and plasmacytoid DCs following single-unit CBT.
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Affiliation(s)
- Takaaki Konuma
- Department of Hematology/Oncology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan.
| | - Chisato Kohara
- Department of Hematology/Oncology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Eri Watanabe
- IMSUT Clinical Flow Cytometry Laboratory, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | | | - Genki Ozawa
- TechnoSuruga Laboratory Co, Ltd, Shizuoka, Japan
| | | | - Kei Suzuki
- TechnoSuruga Laboratory Co, Ltd, Shizuoka, Japan
| | - Motoko Mizukami
- Department of Laboratory Medicine, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Etsuko Nagai
- Department of Laboratory Medicine, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Motohito Okabe
- Department of Hematology/Oncology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Masamichi Isobe
- Department of Hematology/Oncology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Seiko Kato
- Department of Hematology/Oncology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Maki Oiwa-Monna
- Department of Hematology/Oncology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Satoshi Takahashi
- Department of Hematology/Oncology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Arinobu Tojo
- Department of Hematology/Oncology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
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Watanabe E, Wada T, Okekawa A, Kitamura F, Komatsu G, Onogi Y, Yamamoto S, Sasahara M, Kitada M, Koya D, Tsuneki H, Sasaoka T. Stromal cell-derived factor 1 (SDF1) attenuates platelet-derived growth factor-B (PDGF-B)-induced vascular remodeling for adipose tissue expansion in obesity. Angiogenesis 2020; 23:667-684. [PMID: 32699964 DOI: 10.1007/s10456-020-09738-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 07/10/2020] [Indexed: 12/13/2022]
Abstract
Platelet-derived growth factor-B (PDGF-B) is a main factor to promote adipose tissue angiogenesis, which is responsible for the tissue expansion in obesity. In this process, PDGF-B induces the dissociation of pericytes from blood vessels; however, its regulatory mechanism remains unclear. In the present study, we found that stromal cell-derived factor 1 (SDF1) plays an essential role in this regulatory mechanism. SDF1 mRNA was increased in epididymal white adipose tissue (eWAT) of obese mice. Ex vivo pharmacological analyses using cultured adipose tissue demonstrated that physiological concentrations (1-100 pg/mL) of SDF1 inhibited the PDGF-B-induced pericyte dissociation from vessels via two cognate SDF1 receptors, CXCR4 and CXCR7. In contrast, higher concentrations (> 1 ng/mL) of SDF1 alone caused the dissociation of pericytes via CXCR4, and this effect disappeared in the cultured tissues from PDGF receptor β (PDGFRβ) knockout mice. To investigate the role of SDF1 in angiogenesis in vivo, the effects of anagliptin, an inhibitor of dipeptidyl peptidase 4 (DPP4) that degrades SDF1, were examined in mice fed a high-fat diet. Anagliptin increased the SDF1 levels in the serum and eWAT. These changes were associated with a reduction of pericyte dissociation and fat accumulation in eWAT. AMD3100, a CXCR4 antagonist, cancelled these anagliptin effects. In flow-cytometry analysis, anagliptin increased and decreased the PDGF-B expression in endothelial cells and macrophages, respectively, whereas anagliptin reduced the PDGFRβ expression in pericytes of eWAT. These results suggest that SDF1 negatively regulates the adipose tissue angiogenesis in obesity by altering the reactivity of pericytes to PDGF-B.
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Affiliation(s)
- Eri Watanabe
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Tsutomu Wada
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
| | - Akira Okekawa
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Fuka Kitamura
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Go Komatsu
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Yasuhiro Onogi
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Seiji Yamamoto
- Department of Pathology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Masakiyo Sasahara
- Department of Pathology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Munehiro Kitada
- Department of Diabetology and Endocrinology, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Ishikawa, 920-0293, Japan
| | - Daisuke Koya
- Department of Diabetology and Endocrinology, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Ishikawa, 920-0293, Japan
| | - Hiroshi Tsuneki
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Toshiyasu Sasaoka
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
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47
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Hori H, Ozeki Y, Kobashigawa T, Futsuhara K, Tanaka A, Watanabe E, Yabe H, Yago T, Fukuchi T, Sugawara H, Kotake S. Presence of anti-transcriptional intermediary factor-1 gamma antibodies in a dermatomyositis patient with retroperitoneal cancer of unknown primary site. Mod Rheumatol Case Rep 2020; 5:62-68. [PMID: 33269651 DOI: 10.1080/24725625.2020.1789302] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
A 71-year-old woman with dermatomyositis (DM) received glucocorticoid steroid (GCS) and tacrolimus treatment. Relapse of skin symptoms was observed after tapering the GCS dose, and the patient tested positive for anti-transcriptional intermediary factor-1 gamma (TIF1-γ) antibody. Examinations for malignancy were repeatedly performed. However, no obvious findings indicative of a tumour were observed. Two years after, a retroperitoneal tumour was detected and pathologically diagnosed as poorly differentiated adenocarcinoma. The patient developed intestinal and biliary obstruction and eventually died of sepsis. Herein, we report the presence of anti-TIF1-γ antibodies in a DM patient with cancer of unknown primary site.
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Affiliation(s)
- Hiroshi Hori
- Division of General Medicine, Department of Comprehensive Medicine 1, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Yusuke Ozeki
- Division of General Medicine, Department of Comprehensive Medicine 1, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Tsuyoshi Kobashigawa
- Division of Rheumatology, Department of Comprehensive Medicine 1, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Kazusige Futsuhara
- Divison of Surgery, Department of Comprehensive Medicine 2, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Akira Tanaka
- Division of Pathology, Department of Comprehensive Medicine 2, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Eri Watanabe
- Division of Rheumatology, Department of Comprehensive Medicine 1, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Hiroki Yabe
- Division of Rheumatology, Department of Comprehensive Medicine 1, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Toru Yago
- Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan
| | - Takahiko Fukuchi
- Division of General Medicine, Department of Comprehensive Medicine 1, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Hitoshi Sugawara
- Division of General Medicine, Department of Comprehensive Medicine 1, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Shigeru Kotake
- Division of Rheumatology, Department of Comprehensive Medicine 1, Saitama Medical Center, Jichi Medical University, Saitama, Japan
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Watanabe E, Gono T, Kuwana M, Terai C. Predictive factors for sustained remission with stratification by myositis-specific autoantibodies in adult polymyositis/dermatomyositis. Rheumatology (Oxford) 2020; 59:586-593. [PMID: 31410476 DOI: 10.1093/rheumatology/kez328] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 07/02/2019] [Indexed: 01/30/2023] Open
Abstract
OBJECTIVE The aim of this study was to clarify predictive factors for sustained remission in adult patients with PM/DM, particularly focusing on stratification by myositis-specific autoantibodies (MSAs). METHODS A total of 162 adult patients with PM/DM who were followed up for >1 year after diagnosis were retrospectively enrolled. MSAs were evaluated comprehensively in 102 patients whose sera were available. Sustained remission was defined as no evidence of disease activity (active skin rash, active myositis or active interstitial lung disease) for longer than a 6-month continuous period while undergoing myositis therapy or no medication. Clinical data were reviewed in patients' medical charts. RESULTS The sustained remission rate for all patients was 58% during the median follow-up period at 4 years. With regard to MSAs, the achievement rate of sustained remission among MSA-negative patients was significantly higher than that for patients with anti-aminoacyl-tRNA synthetase (P = 0.004), anti-melanoma differentiation-associated gene 5 (P = 0.037) or anti-transcriptional intermediary factor 1-γ (P = 0.013) antibodies. MSA-negative status (odds ratio 5.84, P = 0.009) and absence of severe muscle weakness requiring assistance at diagnosis (odds ratio 43.6, P < 0.001) were independent factors associated with sustained remission in multivariate analysis. Cumulative remission rates were significantly higher (P < 0.001) in patients with both the MSA-negative status and absence of severe muscle weakness at diagnosis than the others. CONCLUSION MSA-negative status and the absence of severe muscle weakness requiring assistance at diagnosis are independent predictive factors for sustained remission in adult PM/DM patients.
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Affiliation(s)
- Eri Watanabe
- Department of Rheumatology, Saitama Medical Center, Jichi Medical University, Saitama, Tokyo, Japan
| | - Takahisa Gono
- Department of Rheumatology, Saitama Medical Center, Jichi Medical University, Saitama, Tokyo, Japan.,Department of Allergy and Rheumatology, Nippon Medical School Graduate School of Medicine, Tokyo, Japan
| | - Masataka Kuwana
- Department of Allergy and Rheumatology, Nippon Medical School Graduate School of Medicine, Tokyo, Japan
| | - Chihiro Terai
- Department of Rheumatology, Saitama Medical Center, Jichi Medical University, Saitama, Tokyo, Japan
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Ishikawa A, Wada T, Nishimura S, Ito T, Okekawa A, Onogi Y, Watanabe E, Sameshima A, Tanaka T, Tsuneki H, Saito S, Sasaoka T. Estrogen regulates sex-specific localization of regulatory T cells in adipose tissue of obese female mice. PLoS One 2020; 15:e0230885. [PMID: 32240221 PMCID: PMC7117686 DOI: 10.1371/journal.pone.0230885] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 03/10/2020] [Indexed: 12/22/2022] Open
Abstract
Regulatory T cells (Treg) play essential roles in maintaining immune homeostasis. Resident Treg in visceral adipose tissue (VAT-Treg) decrease in male obese mice, which leads to the development of obesity-associated chronic inflammations and insulin resistance. Although gender differences in immune responses have been reported, the effects of the difference in metabolic environment on VAT-Treg are unclear. We investigated the localization of VAT-Treg in female mice in comparison with that in male mice. On a high-fat diet (HFD), VAT-Treg decreased in male mice but increased in female mice. The increase was abolished in ovariectomized and HFD-fed mice, but was restored by estrogen supplementation. The IL33 receptor ST2, which is important for the localization and maturation of VAT-Treg in males, was reduced in CD4+CD25+ T cells isolated from gonadal fat of obese mice of both genders, suggesting that a different system exists for VAT-Treg localization in females. Extensive analysis of chemokine expression in gonadal fat and adipose CD4+CD25+T cells revealed several chemokine signals related to female-specific VAT-Treg accumulation such as CCL24, CCR6, and CXCR3. Taken together, the current study demonstrated sexual dimorphism in VAT-Treg localization in obese mice. Estrogen may attenuate obesity-associated chronic inflammation partly through altering chemokine-related VAT-Treg localization in females.
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Affiliation(s)
- Akari Ishikawa
- Department of Clinical Pharmacology, University of Toyama, Toyama, Japan
| | - Tsutomu Wada
- Department of Clinical Pharmacology, University of Toyama, Toyama, Japan
- * E-mail: (TW); (TS)
| | - Sanshiro Nishimura
- Department of Clinical Pharmacology, University of Toyama, Toyama, Japan
| | - Tetsuo Ito
- Department of Clinical Pharmacology, University of Toyama, Toyama, Japan
| | - Akira Okekawa
- Department of Clinical Pharmacology, University of Toyama, Toyama, Japan
| | - Yasuhiro Onogi
- Department of Clinical Pharmacology, University of Toyama, Toyama, Japan
| | - Eri Watanabe
- Department of Clinical Pharmacology, University of Toyama, Toyama, Japan
| | - Azusa Sameshima
- Department of Obstetrics and Gynecology, University of Toyama, Toyama, Japan
| | - Tomoko Tanaka
- Department of Obstetrics and Gynecology, University of Toyama, Toyama, Japan
| | - Hiroshi Tsuneki
- Department of Clinical Pharmacology, University of Toyama, Toyama, Japan
| | - Shigeru Saito
- Department of Obstetrics and Gynecology, University of Toyama, Toyama, Japan
| | - Toshiyasu Sasaoka
- Department of Clinical Pharmacology, University of Toyama, Toyama, Japan
- * E-mail: (TW); (TS)
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50
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Ando K, Nagao M, Watanabe E, Sakai A, Suzuki A, Nakao R, Ishizaki U, Sakai S, Hagiwara N. Association between myocardial hypoxia and fibrosis in hypertrophic cardiomyopathy: analysis by T2* BOLD and T1 mapping MRI. Eur Radiol 2020; 30:4327-4336. [PMID: 32211964 DOI: 10.1007/s00330-020-06779-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 02/14/2020] [Accepted: 02/25/2020] [Indexed: 11/29/2022]
Abstract
OBJECTIVES We assessed whether an association exists between myocardial oxygenation and myocardial fibrosis in patients with hypertrophic cardiomyopathy (HCM), using blood-oxygen-level-dependent (BOLD) T2* cardiac magnetic resonance imaging (T2*-CMR) and T1 mapping. METHODS T1 mapping and T2*-CMR data were collected from 55 HCM patients using a 3-T MR and were prospectively analyzed. T2*-CMR was conducted using the black blood, breath-hold, multi-echo, and gradient echo sequence. Over 10 min, inhalation of oxygen at the flow rate of 10 L/min, T2* for mid-septum was measured following room-air and oxygen inhalation, and ΔT2* ratio (T2*oxy-T2*air/T2*air, %) was calculated. During pre- and post-gadolinium enhancement, native T1 (ms) and extracellular volume fractions (ECV, %) were calculated at sites same as the T2* measurement. Hypoxia was defined as the segment with an absolute value of the ΔT2* ratio ≥ 10%. RESULTS ΔT2* ratio was significantly higher for segments with native T1 ≥ 1290 ms than those with native T1 < 1290 ms (21 ± 32% vs. 8 ± 6%, p = 0.005). ΔT2* ratio was also significantly higher for segments with ECV ≥ 28% than those with ECV < 28% (21 ± 32% vs. 8 ± 8%, p = 0.0003). ROC curve analysis revealed that ΔT2* ratio could detect segments with native T1 ≥ 1290 ms and ECV ≥ 28% and c-statistics of 0.72 and 0.79. According to the multivariate logistic regression analysis results, ECV is an independent factor in hypoxia (odds ratio, 1.47; 95% confidence interval, 1.02-2.13; p < 0.05). CONCLUSIONS Analysis of BOLD T2*-CMR and T1 mapping revealed that ECV is strongly associated with ΔT2* ratio, suggesting that the onset of myocardial fibrosis is related to hypoxia in HCM patients. TRIAL REGISTRATION Our study was approved by the ethics committee of our institute (#4036, registered on 21 July 2016) KEY POINTS: • Analysis of ΔT2* ratio and ECV with BOLD-T2* and T1 mapping revealed a strong association between myocardial fibrosis and hypoxia in HCM patients.
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Affiliation(s)
- Kiyoe Ando
- Department of Cardiology, Tokyo Woman's Medical University, Tokyo, Japan
| | - Michinobu Nagao
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Woman's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan.
| | - Eri Watanabe
- Department of Cardiology, Tokyo Woman's Medical University, Tokyo, Japan
| | - Akiko Sakai
- Department of Cardiology, Tokyo Woman's Medical University, Tokyo, Japan
| | - Atsushi Suzuki
- Department of Cardiology, Tokyo Woman's Medical University, Tokyo, Japan
| | - Risako Nakao
- Department of Cardiology, Tokyo Woman's Medical University, Tokyo, Japan
| | - Umiko Ishizaki
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Woman's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Shuji Sakai
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Woman's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Nobuhisa Hagiwara
- Department of Cardiology, Tokyo Woman's Medical University, Tokyo, Japan
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