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Yamamoto K, Okamura K, Wakamatsu K, Ito S, Akabane K, Arai Y, Kawaguchi J, Hozumi Y, Suzuki T. Genetic insights into Tietz albinism-deafness syndrome: A new dominant-negative mutation in MITF. Pigment Cell Melanoma Res 2024. [PMID: 38439523 DOI: 10.1111/pcmr.13166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/31/2024] [Accepted: 02/26/2024] [Indexed: 03/06/2024]
Abstract
Tietz albinism-deafness syndrome (TADS) is a rare and severe manifestation of Waardenburg syndrome that is primarily linked to mutations in MITF. In this report, we present a case of TADS resulting from a novel c.637G>C mutation in MITF (p.Glu213Gln; GenBank Accession number: NM_000248). A 3-year-old girl presented with congenital generalized hypopigmentation of the hair, skin, and irides along with complete sensorineural hearing loss. Histopathological and electron microscopy investigations indicated that this variant did not alter the number of melanocytes in the skin but significantly impaired melanosome maturation within melanocytes. Comprehensive melanin analysis revealed marked reductions in both eumelanin (EM) and pheomelanin (PM) rather than changes in the EM-to-PM ratio observed in oculocutaneous albinism. We conducted an electrophoretic mobility shift assay to investigate the binding capability of the identified variant to DNA sequences containing the E-box motif along with other known variants (p.Arg217del and p.Glu213Asp). Remarkably, all three variants exhibited dominant-negative effects, thus providing novel insights into the pathogenesis of TADS. This study sheds light on the genetic mechanisms underlying TADS and offers a deeper understanding of this rare condition and its associated mutations in MITF.
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Affiliation(s)
- Kohei Yamamoto
- Department of Dermatology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Ken Okamura
- Department of Dermatology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Kazumasa Wakamatsu
- Institute for Melanin Chemistry, Fujita Health University, Toyoake, Japan
| | - Shosuke Ito
- Institute for Melanin Chemistry, Fujita Health University, Toyoake, Japan
| | - Kozue Akabane
- Department of Ophthalmology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Yosuke Arai
- Department of Dermatology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Junnosuke Kawaguchi
- Department of Dermatology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Yutaka Hozumi
- Department of Dermatology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Tamio Suzuki
- Department of Dermatology, Faculty of Medicine, Yamagata University, Yamagata, Japan
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Fuji S, Sugita J, Najima Y, Konishi T, Tanaka T, Ohigashi H, Eto T, Nagafuji K, Hiramoto N, Matsuoka KI, Maruyama Y, Ota S, Ishikawa J, Kawakita T, Akasaka T, Kamimura T, Hino M, Fukuda T, Atsuta Y, Yakushijin K. Low- versus standard-dose post-transplant cyclophosphamide as GVHD prophylaxis for haploidentical transplantation. Br J Haematol 2024; 204:959-966. [PMID: 38037468 DOI: 10.1111/bjh.19228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/12/2023] [Accepted: 11/14/2023] [Indexed: 12/02/2023]
Abstract
Haploidentical haematopoietic cell transplantation (haplo-HCT) using post-transplant cyclophosphamide (PTCY) as graft-versus-host disease (GVHD) prophylaxis is the standard of care for various haematological malignancies. The original PTCY dose after haplo-HCT was 100 mg/kg, but no dose-finding studies have been performed to identify the optimal dose. We performed a retrospective analysis to compare standard-dose PTCY (100 mg/kg) with reduced-dose PTCY (80 mg/kg): 969 in the standard-dose group and 538 in the reduced-dose group. As there was a significant difference between the two groups regarding patient and transplant characteristics, we performed propensity score (PS) matching. After PS matching, 425 patients in each group were included. The probabilities of 2-year OS were 55.9% in the standard-dose group and 47.0% in the reduced-dose group (p = 0.36). The cumulative incidences of 2-year non-relapse mortality were 21.3% in the standard-dose group and 20.5% in the reduced-dose group (p = 0.55). There was no significant difference in the incidence of acute (grade II-IV 29.2% [95% CI, 24.9-33.6] vs. 25.3% [95% CI, 21.3-29.6]; grade III-IV 7.3% [95% CI, 5.1-10.0] vs. 6.6% [95% CI, 4.5-9.3]) or chronic GVHD. In conclusion, reduced- and standard-dose PTCY were comparable in terms of major clinical outcomes.
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Affiliation(s)
- Shigeo Fuji
- Department of Hematology, Osaka International Cancer Institute, Osaka, Japan
| | - Junichi Sugita
- Department of Hematology, Sapporo Hokuyu Hospital, Sapporo, Hokkaido, Japan
| | - Yuho Najima
- Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Tokyo, Japan
| | - Tatsuya Konishi
- Department of Hematology, Clinical Immunology and Infectious Diseases, Ehime University Graduate School of Medicine, Tōon-shi, Ehime, Japan
| | - Takashi Tanaka
- Department of Hematopoietic Stem Cell Transplantation, National Cancer Center Hospital, Chuo City, Tokyo, Japan
| | - Hiroyuki Ohigashi
- Department of Hematology, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - Tetsuya Eto
- Department of Hematology, Hamanomachi Hospital, Fukuoka, Japan
| | - Koji Nagafuji
- Division of Hematology and Oncology, Department of Medicine, Kurume University Hospital, Fukuoka, Japan
| | - Nobuhiro Hiramoto
- Department of Hematology, Kobe City Medical Center General Hospital, Kobe, Hyogo, Japan
| | - Ken-Ichi Matsuoka
- Department of Hematology and Oncology, Okayama University Hospital, Okayama, Japan
| | - Yumiko Maruyama
- Department of Hematology, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
| | - Shuichi Ota
- Department of Hematology, Sapporo Hokuyu Hospital, Sapporo, Hokkaido, Japan
| | - Jun Ishikawa
- Department of Hematology, Osaka International Cancer Institute, Osaka, Japan
| | - Toshiro Kawakita
- Department of Hematology, National Hospital Organization Kumamoto Medical Center, Kumamoto, Japan
| | | | | | - Masayuki Hino
- Department of Hematology, Osaka Metropolitan University, Osaka City, Osaka, Japan
| | - Takahiro Fukuda
- Department of Hematopoietic Stem Cell Transplantation, National Cancer Center Hospital, Chuo City, Tokyo, Japan
| | - Yoshiko Atsuta
- Japanese Data Center for Hematopoietic Cell Transplantation, Seto, Aichi, Japan
- Department of Registry Science for Transplant and Cellular Therapy, Aichi Medical University School of Medicine, Nagakute-shi, Aichi, Japan
| | - Kimikazu Yakushijin
- Department of Medical Oncology and Hematology, Kobe University Hospital, Kobe, Japan
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3
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Kamoi K, Ohno-Matsui K. Long Vax in the Eye: Long Post-COVID Vaccination Syndrome Presenting with Frosted Branch Angiitis. Diseases 2024; 12:36. [PMID: 38391783 PMCID: PMC10888280 DOI: 10.3390/diseases12020036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 02/07/2024] [Accepted: 02/08/2024] [Indexed: 02/24/2024] Open
Abstract
mRNA COVID-19 vaccines have been reported as protecting against COVID-19 and reducing its severity, and we have recognized post-vaccination symptoms recently. This research investigates the clinical trajectories of ocular disorders in a 51-year-old female who received a second dose of the BNT162b2 (Pfizer-BioNTech) mRNA COVID-19 vaccine. Exhibiting fever and blurred vision within 24 h post-vaccination, with progressive blurry vision over two months, she underwent in-depth ophthalmologic examinations, revealing intraocular cellular infiltration in anterior chamber, vitreous opacity, and frosted branch angiitis in both eyes. Comprehensive evaluations, including systemic workups as well as ocular and blood specimen analyses, excluded autoimmune and infectious etiologies, consolidating the diagnosis of vaccine-induced ocular inflammation. Despite adherence to prevailing therapeutic protocols, her condition showed no significant improvement over 18 months, pointing to a possible long post-COVID vaccination syndrome. Such persistent sequelae underscore the need for detailed studies to discern the interactions between vaccine-induced immune responses and the development of post-vaccination sequelae. Continual documentation of patients with long post-COVID vaccination syndrome is now essential to better understand the vaccine's immunological effects, aiding in improving global vaccination strategies.
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Affiliation(s)
- Koju Kamoi
- Department of Ophthalmology & Visual Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Kyoko Ohno-Matsui
- Department of Ophthalmology & Visual Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
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Miyamoto T, Izawa K, Masui S, Yamazaki A, Yamasaki Y, Matsubayashi T, Shiraki M, Ohnishi H, Yasumura J, Kawabe T, Miyamae T, Matsubara T, Arakawa N, Ishige T, Takizawa T, Shimbo A, Shimizu M, Kimura N, Maeda Y, Maruyama Y, Shigemura T, Furuta J, Sato S, Tanaka H, Izumikawa M, Yamamura M, Hasegawa T, Kaneko H, Nakagishi Y, Nakano N, Iida Y, Nakamura T, Wakiguchi H, Hoshina T, Kawai T, Murakami K, Akizuki S, Morinobu A, Ohmura K, Eguchi K, Sonoda M, Ishimura M, Furuno K, Kashiwado M, Mori M, Kawahata K, Hayama K, Shimoyama K, Sasaki N, Ito T, Umebayashi H, Omori T, Nakamichi S, Dohmoto T, Hasegawa Y, Kawashima H, Watanabe S, Taguchi Y, Nakaseko H, Iwata N, Kohno H, Ando T, Ito Y, Kataoka Y, Saeki T, Kaneko U, Murase A, Hattori S, Nozawa T, Nishimura K, Nakano R, Watanabe M, Yashiro M, Nakamura T, Komai T, Kato K, Honda Y, Hiejima E, Yonezawa A, Bessho K, Okada S, Ohara O, Takita J, Yasumi T, Nishikomori R. Clinical Characteristics of Cryopyrin-Associated Periodic Syndrome and Long-Term Real-World Efficacy and Tolerability of Canakinumab in Japan: Results of a Nationwide Survey. Arthritis Rheumatol 2024. [PMID: 38268504 DOI: 10.1002/art.42808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 01/09/2024] [Accepted: 01/22/2024] [Indexed: 01/26/2024]
Abstract
OBJECTIVE We assess the clinical characteristics of patients with cryopyrin-associated periodic syndrome (CAPS) in Japan and evaluate the real-world efficacy and safety of interleukin-1 (IL-1) inhibitors, primarily canakinumab. METHODS Clinical information was collected retrospectively, and serum concentrations of canakinumab and cytokines were analyzed. RESULTS A total of 101 patients were included, with 86 and 15 carrying heterozygous germline and somatic mosaic mutations, respectively. We identified 39 mutation types, and the common CAPS-associated symptoms corresponded with those in previous reports. Six patients (5.9% of all patients) died, with four of the deaths caused by CAPS-associated symptoms. Notably, 73.7% of patients (100%, 79.6%, and 44.4% of familial cold autoinflammatory syndrome, Muckle-Wells syndrome, and chronic infantile neurological cutaneous articular syndrome/neonatal onset multisystem inflammatory disease, respectively) achieved complete remission with canakinumab, and early therapeutic intervention was associated with better auditory outcomes. In some patients, canakinumab treatment stabilized the progression of epiphysial overgrowth and improved height gain, visual acuity, and renal function. However, 23.7% of patients did not achieve inflammatory remission with crucial deterioration of organ damage, with two dying while receiving high-dose canakinumab treatment. Serological analysis of canakinumab and cytokine concentrations revealed that the poor response was not related to canakinumab shortage. Four inflammatory nonremitters developed inflammatory bowel disease (IBD)-unclassified during canakinumab treatment. Dual biologic therapy with canakinumab and anti-tumor necrosis factor-α agents was effective for IBD- and CAPS-associated symptoms not resolved by canakinumab monotherapy. CONCLUSION This study provides one of the largest epidemiologic data sets for CAPS. Although early initiation of anti-IL-1 treatment with canakinumab is beneficial for improving disease prognosis, some patients do not achieve remission despite a high serum concentration of canakinumab. Moreover, IBD may develop in CAPS after canakinumab treatment.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Tomoyo Matsubara
- Dokkyo Medical University Saitama Medical Center, Saitama, Japan
| | | | | | | | - Asami Shimbo
- Tokyo Medical and Dental University, Tokyo, Japan
| | | | - Naoki Kimura
- Tokyo Medical and Dental University, Tokyo, Japan
| | | | | | | | | | - Satoshi Sato
- Saitama Children's Medical Center, Saitama, Japan
| | | | | | | | | | - Hiroshi Kaneko
- National Center for Global Health and Medicine, Tokyo, Japan
| | | | - Naoko Nakano
- Ehime Prefectural Central Hospital, Matsuyama, Japan
| | | | | | | | - Takayuki Hoshina
- University of Occupational and Environmental Health, Japan, Kitakyushu, Japan
| | - Toshinao Kawai
- National Center for Child Health and Development, Tokyo, Japan
| | | | | | | | | | | | | | | | | | | | - Masaaki Mori
- Tokyo Medical and Dental University, Tokyo, Japan, and St. Marianna University School of Medicine, Kawasaki, Japan
| | | | | | | | - Natsuko Sasaki
- University of Occupational and Environmental Health, Japan, Kitakyushu, Japan
| | - Taisuke Ito
- Hamamatsu University School of Medicine, Hamamatsu, Japan
| | | | - Tae Omori
- Tokyo Metropolitan Bokutoh Hospital, Tokyo, Japan
| | | | | | | | | | | | - Yuichiro Taguchi
- Department of Rheumatology, Nagoya Ekisaikai Hospital, Nagoya, Japan
| | | | - Naomi Iwata
- Aichi Children's Health and Medical Center, Obu, Japan
| | - Hiroki Kohno
- Tokyo Women's Medical University Hospital, Tokyo, Japan
| | | | - Yasuhiko Ito
- Nagoya City University West Medical Center, Nagoya, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Osamu Ohara
- Kazusa DNA Research Institute, Kisarazu, Japan
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Tada H, Yamagami K, Sakata K, Usui S, Kawashiri MA, Takamura M. Healthy lifestyle, lipoprotein (a) levels and the risk of coronary artery disease. Eur J Clin Invest 2024; 54:e14093. [PMID: 37712231 DOI: 10.1111/eci.14093] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 09/04/2023] [Indexed: 09/16/2023]
Abstract
BACKGROUND Lipoprotein (a) [Lp(a)] is associated with coronary artery disease (CAD). However, the role of healthy lifestyle against the risk of CAD with consideration of high Lp(a) levels remains unclear. METHODS This study examined 4512 participants who underwent serum Lp(a) level assessment at Kanazawa University Hospital from 2008 to March 2016. Their lifestyle habits were examined based on four questionnaires regarding dietary pattern, exercise habits, smoking status and body weight. Logistic regression analyses were performed to identify the association between healthy lifestyle and CAD independent of Lp(a) levels. RESULTS The Lp(a) levels were significantly associated with CAD (odds ratio [OR]: 1.12, 95% confidence interval [CI]: 1.08-1.17, p = 1.3 × 10-7 per 10 mg/dL). Under these circumstances, the lifestyle risk score was also significantly associated with CAD (OR: 1.24, 95% CI: 1.12-1.36, p = 2.4 × 10-8 ). Compared with patients with a favourable lifestyle who have Lp(a) levels of <30 mg/dL, those with an intermediate or unfavourable lifestyle were at higher risk for CAD (OR: 1.11, 95% CI: 1.02-1.20, p = 0.003 and OR: 1.40, 95% CI: 1.16-1.54, p = 3.6 × 10-5 , respectively). Further, patients with a favourable, intermediate or unfavourable lifestyle who have Lp(a) levels of ≥30 mg/dL were at high risk for CAD (OR: 1.21, 95% CI: 1.08-1.34, p = 0.0014; OR: 1.31, 95% CI: 1.14-1.48, p = 1.2 × 10-4 ; and OR: 1.81, 95% CI: 1.44-2.18, p = 2.2 × 10-7 , respectively). CONCLUSIONS Healthy lifestyle was associated with a lower risk of CAD regardless of Lp(a) levels.
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Affiliation(s)
- Hayato Tada
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kan Yamagami
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kenji Sakata
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Soichiro Usui
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | | | - Masayuki Takamura
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
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Kawada JI, Ito Y, Ohshima K, Yamada M, Kataoka S, Muramatsu H, Sawada A, Wada T, Imadome KI, Arai A, Iwatsuki K, Ohga S, Kimura H. Updated guidelines for chronic active Epstein-Barr virus disease. Int J Hematol 2023; 118:568-576. [PMID: 37728704 PMCID: PMC10615970 DOI: 10.1007/s12185-023-03660-5] [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: 04/28/2023] [Revised: 08/31/2023] [Accepted: 09/06/2023] [Indexed: 09/21/2023]
Abstract
Chronic active Epstein-Barr virus disease (CAEBV), formerly named chronic active Epstein-Barr virus infection, is characterized by systemic inflammation and clonal proliferation of Epstein-Barr virus (EBV)-infected T or NK cells. As CAEBV is a potentially life-threatening illness, appropriate diagnosis and therapeutic interventions are necessary for favorable clinical outcomes. Substantial evidence regarding the pathogenesis and treatment of CAEBV has been accumulated since previous guidelines for the diagnosis of CAEBV were proposed. To reflect this evidence, we updated the guidelines for the diagnosis and treatment of CAEBV to improve clinical management of the disease. The details of the updated guidelines are presented in this report. Diagnosis of CAEBV now requires confirmation of a high copy number of EBV genome and EBV-infected T or NK cells. An EBV DNA load ≥ 10,000 IU/mL in whole blood is proposed as the diagnostic cutoff value for CAEBV in this updated guideline. A standard treatment approach for CAEBV has not been established, and hematopoietic stem cell transplantation (HSCT) is considered the only curative treatment. Chemotherapy can be administered to control disease activity before HSCT.
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Affiliation(s)
- Jun-Ichi Kawada
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan.
| | - Yoshinori Ito
- Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - Koichi Ohshima
- Department of Pathology, School of Medicine, Kurume University, Kurume, Japan
| | - Masaki Yamada
- Department of Advanced Medicine for Viral Infections, National Center for Child Health and Development, Tokyo, Japan
| | - Shinsuke Kataoka
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hideki Muramatsu
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Akihisa Sawada
- Department of Hematology/Oncology, Osaka Women's and Children's Hospital, Izumi, Japan
| | - Taizo Wada
- Department of Pediatrics, Kanazawa University, Kanazawa, Japan
| | - Ken-Ichi Imadome
- Department of Advanced Medicine for Viral Infections, National Center for Child Health and Development, Tokyo, Japan
| | - Ayako Arai
- Division of Hematology and Oncology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Keiji Iwatsuki
- Department of Dermatology, Dentistry, and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, Okayama, Japan
| | - Shouichi Ohga
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Hiroshi Kimura
- Department of Virology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
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Arafa A, Kashima R, Kokubo Y. Stair climbing and the risk of all-cause, cancer, and cardiovascular mortality among older adults: The Suita Study. Geriatr Gerontol Int 2023; 23:577-579. [PMID: 37317580 DOI: 10.1111/ggi.14618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/24/2023] [Accepted: 05/25/2023] [Indexed: 06/16/2023]
Affiliation(s)
- Ahmed Arafa
- Department of Preventive Cardiology, National Cerebral and Cardiovascular Center, Suita, Japan
- Department of Public Health, Faculty of Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - Rena Kashima
- Department of Preventive Cardiology, National Cerebral and Cardiovascular Center, Suita, Japan
- Department of Cardiovascular Pathophysiology and Therapeutics, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Yoshihiro Kokubo
- Department of Preventive Cardiology, National Cerebral and Cardiovascular Center, Suita, Japan
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Usuda K, Hayashi K, Nakajima T, Kurata Y, Cui S, Kusayama T, Tsuda T, Tada H, Kato T, Sakata K, Usui S, Fujino N, Tanaka Y, Kaneko Y, Kurabayashi M, Tange S, Saito T, Ohta K, Yamagishi M, Takamura M. Mechanisms of fever-induced QT prolongation and torsades de pointes in patients with KCNH2 mutation. Europace 2023; 25:euad161. [PMID: 37386841 PMCID: PMC10310978 DOI: 10.1093/europace/euad161] [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: 11/24/2022] [Accepted: 05/13/2023] [Indexed: 07/01/2023] Open
Abstract
AIMS Patients with particular mutations of type-2 long QT syndrome (LQT2) are at an increased risk for malignant arrhythmia during fever. This study aimed to determine the mechanism by which KCNH2 mutations cause fever-induced QT prolongation and torsades de pointes (TdP). METHODS AND RESULTS We evaluated three KCNH2 mutations, G584S, D609G, and T613M, in the Kv11.1 S5-pore region, identified in patients with marked QT prolongation and TdP during fever. We also evaluated KCNH2 M124T and R269W, which are not associated with fever-induced QT prolongation. We characterized the temperature-dependent changes in the electrophysiological properties of the mutant Kv11.1 channels by patch-clamp recording and computer simulation. The average tail current densities (TCDs) at 35°C for G584S, WT+D609G, and WT+T613M were significantly smaller and less increased with rising temperature from 35°C to 40°C than those for WT, M124T, and R269W. The ratios of the TCDs at 40°C to 35°C for G584S, WT+D609G, and WT+T613M were significantly smaller than for WT, M124T, and R269W. The voltage dependence of the steady-state inactivation curve for WT, M124T, and R269W showed a significant positive shift with increasing temperature; however, that for G584S, WT+D609G, and WT+T613M showed no significant change. Computer simulation demonstrated that G584S, WT+D609G, and WT+T613M caused prolonged action potential durations and early afterdepolarization formation at 40°C. CONCLUSION These findings indicate that KCNH2 G584S, D609G, and T613M in the S5-pore region reduce the temperature-dependent increase in TCDs through an enhanced inactivation, resulting in QT prolongation and TdP at a febrile state in patients with LQT2.
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Affiliation(s)
- Keisuke Usuda
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa Ishikawa 920-8641, Japan
| | - Kenshi Hayashi
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa Ishikawa 920-8641, Japan
| | - Tadashi Nakajima
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yasutaka Kurata
- Department of Physiology, Kanazawa Medical University, Uchinada, Japan
| | - Shihe Cui
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa Ishikawa 920-8641, Japan
| | - Takashi Kusayama
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa Ishikawa 920-8641, Japan
| | - Toyonobu Tsuda
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa Ishikawa 920-8641, Japan
| | - Hayato Tada
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa Ishikawa 920-8641, Japan
| | - Takeshi Kato
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa Ishikawa 920-8641, Japan
| | - Kenji Sakata
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa Ishikawa 920-8641, Japan
| | - Soichiro Usui
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa Ishikawa 920-8641, Japan
| | - Noboru Fujino
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa Ishikawa 920-8641, Japan
| | - Yoshihiro Tanaka
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa Ishikawa 920-8641, Japan
- Department of Preventive Medicine Northwestern University, Feinberg School of Medicine, Chicago, IL, USA
| | - Yoshiaki Kaneko
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Masahiko Kurabayashi
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Shoichi Tange
- Department of Cardiovascular Medicine, Maebashi Red Cross Hospital, Maebashi, Japan
| | - Takekatsu Saito
- Department of Pediatrics, Kanazawa University, Kanazawa, Japan
| | - Kunio Ohta
- Department of Pediatrics, Kanazawa University, Kanazawa, Japan
| | | | - Masayuki Takamura
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa Ishikawa 920-8641, Japan
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Tada H, Kojima N, Yamagami K, Nomura A, Nohara A, Usui S, Sakata K, Hayashi K, Fujino N, Takamura M, Kawashiri MA. Coronary artery calcium among patients with heterozygous familial hypercholesterolaemia. Eur Heart J Open 2023; 3:oead046. [PMID: 37193254 PMCID: PMC10182732 DOI: 10.1093/ehjopen/oead046] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/24/2023] [Accepted: 05/01/2023] [Indexed: 05/18/2023]
Abstract
Aims We aimed to determine if coronary artery calcium (CAC) is associated with cardiovascular disease (CVD) events, defined as CVD-related death, unstable angina, myocardial infarction, or staged revascularization among patients with heterozygous familial hypercholesterolaemia (HeFH) under primary prevention settings. Methods and results Data of patients with FH admitted to Kanazawa University Hospital between 2000 and 2020, who underwent CAC measurement and were followed up (n = 622, male = 306, mean age = 54 years), were retrospectively reviewed. Risk factors for CVD events were determined using the Cox proportional hazard model. The median follow-up duration was 13.2 years (interquartile range: 9.8-18.4 years). We observed 132 CVD events during the follow-up period. The event rate per 1000 person-years for CAC scores of 0 [n = 283 (45.5%)], 1-100 [n = 260 (41.8%)], and >100 [n = 79 (12.7%)] was 1.2, 17.0, and 78.8, respectively. Log (CAC score + 1) was a significant predictor of the occurrence of CVD events (hazard ratio: 3.24; 95% confidence interval: 1.68-4.80; P < 0.0001) in the multivariate Cox regression analysis, independent of other factors. The risk discrimination of CVD events was enhanced by adding CAC information to other conventional risk factors (C-statistics: 0.833-0.934; P < 0.0001). Conclusion The CAC score helps in further risk stratification in patients with HeFH.
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Affiliation(s)
- Hayato Tada
- Corresponding author. Tel: +81-76-265-2000 (2251), Fax: +81-76-234-4251,
| | - Nobuko Kojima
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Kan Yamagami
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Akihiro Nomura
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Atsushi Nohara
- Department of Clinical Genetics, Ishikawa Prefectural Central Hospital, Kanazawa, Japan
| | - Soichiro Usui
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Kenji Sakata
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Kenshi Hayashi
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Noboru Fujino
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Masayuki Takamura
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
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Nishino T, Hashimoto A, Tohma S, Matsui T. Comprehensive evaluation of the influence of sex differences on composite disease activity indices for rheumatoid arthritis: results from a nationwide observational cohort study. BMC Rheumatol 2023; 7:4. [PMID: 36945056 PMCID: PMC10029312 DOI: 10.1186/s41927-023-00328-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 02/24/2023] [Indexed: 03/23/2023] Open
Abstract
BACKGROUND The effects and their magnitudes of sex on disease activity indices for rheumatoid arthritis are not clear. We aimed to comprehensively evaluate the influence of sex on disease activity indices in the real-world setting using a large observational database. METHODS We analyzed 14,958 patients registered in the National Database of Rheumatic Diseases in Japan (NinJa) in 2017. We evaluated the sex differences in the 28-joint disease activity score (DAS28) using erythrocyte sedimentation rate (ESR), DAS28 using C-reactive protein (DAS28-CRP), Simplified Disease Activity Index (SDAI), and Clinical Disease Activity Index by disease activity category using Cliff's delta and regression analysis. Differences in the share of components of indices were evaluated using permutational multivariate analysis of variance. Correction equations were constructed to estimate the number of misclassification in male patients who achieve DAS28-ESR remission. RESULTS DAS28-ESR showed higher values in female patients than male patients in remission despite no obvious difference in other indices or disease activity categories. Among the components of DAS28-ESR, only ESR was higher in female patients than male patients in remission. In DAS28-CRP and SDAI, 28-tender joint count was higher and CRP was lower in female patients than male patients. In addition, the profiles in the components were different between female and male patients, especially among those with high disease activity. Using correction equations, almost 12% of male patients with DAS28-ESR remission were estimated to be misclassified, mainly due to differences in ESR. CONCLUSION Among the disease activity indices, significant sex difference was observed only in DAS28-ESR remission. The degree of misclassification in DAS28-ESR remission would be unignorable.
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Affiliation(s)
- Takahiro Nishino
- Department of Rheumatology Research, Clinical Research Center for Allergy and Rheumatology, National Hospital Organization Sagamihara National Hospital, 18-1, Sakuradai, Minami-ku, Sagamihara, Kanagawa, 252-0392, Japan
| | - Atsushi Hashimoto
- Department of Rheumatology, National Hospital Organization Sagamihara National Hospital, Sagamihara, Kanagawa, Japan
| | - Shigeto Tohma
- Department of Rheumatology, National Hospital Organization Tokyo National Hospital, Kiyose, Tokyo, Japan
| | - Toshihiro Matsui
- Department of Rheumatology Research, Clinical Research Center for Allergy and Rheumatology, National Hospital Organization Sagamihara National Hospital, 18-1, Sakuradai, Minami-ku, Sagamihara, Kanagawa, 252-0392, Japan.
- Department of Rheumatology, National Hospital Organization Sagamihara National Hospital, Sagamihara, Kanagawa, Japan.
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11
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Ikebe T, Okuno R, Uchitani Y, Takano M, Yamaguchi T, Otsuka H, Kazawa Y, Fujita S, Kobayashi A, Date Y, Isobe J, Maenishi E, Ohnishi M, Akeda Y. Serotype Distribution and Antimicrobial Resistance of Streptococcus agalactiae Isolates in Nonpregnant Adults with Streptococcal Toxic Shock Syndrome in Japan in 2014 to 2021. Microbiol Spectr 2023; 11:e0498722. [PMID: 36786620 PMCID: PMC10100893 DOI: 10.1128/spectrum.04987-22] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 01/18/2023] [Indexed: 02/15/2023] Open
Abstract
The incidence of streptococcal toxic shock syndrome (STSS) due to group B Streptococcus (GBS) has been increasing annually in Japan and is becoming a serious challenge. Furthermore, in recent years, penicillin- or clindamycin-resistant strains used in treating streptococcal toxic shock syndrome have been reported. However, no report analyzed >100 isolates of group B Streptococcus causing streptococcal toxic shock syndrome. Therefore, we aimed to perform serotyping and antimicrobial susceptibility testing of 268 isolated group B Streptococcus strains from streptococcal toxic shock syndrome cases involving nonpregnant adult patients in Japan between 2014 and 2021. The most prevalent serotype was Ib, followed by serotypes V, III, and Ia. Seven isolates were resistant to penicillin G, and 17.9% (48 isolates) were resistant to clindamycin. Of the penicillin-resistant group B Streptococcus isolates, 71.4% (5 isolates) were clindamycin resistant. In addition, group B Streptococcus strains resistant to penicillin and clindamycin were isolated from patients with streptococcal toxic shock syndrome. Therefore, before these strains become prevalent, introduction of the group B Streptococcus vaccine is essential for disease prevention. IMPORTANCE Group B Streptococcus (GBS) has been increasingly associated with invasive disease in nonpregnant adults. Such infections are responsible for substantial morbidity and mortality, particularly in individuals with underlying chronic conditions. Streptococcal toxic shock syndrome (STSS) is a severe invasive infection characterized by the sudden onset of shock, multiorgan failure, and high mortality. In this study, we assessed 268 GBS-related STSS cases in nonpregnant adults in Japan between 2014 and 2021. Serotype Ib was the most prevalent, followed by serotypes V, III, and Ia, which were identified in more than 80% of STSS isolates. We found that 48 clindamycin-resistant strains and 7 penicillin G-resistant strains were isolated between 2014 and 2021. We believe that our study makes a significant contribution to the literature because we show that the GBS vaccine, particularly the hexavalent conjugate vaccine, is important to reduce the number of patients with STSS.
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Affiliation(s)
| | - Rumi Okuno
- Tokyo Metropolitan Institute of Public Health, Tokyo, Japan
| | - Yumi Uchitani
- Tokyo Metropolitan Institute of Public Health, Tokyo, Japan
| | - Mami Takano
- Oita Prefectural Institute of Health and Environment, Oita, Japan
| | | | - Hitoshi Otsuka
- Yamaguchi Prefectural Institute of Public Health and Environment, Yamaguchi, Japan
| | - Yu Kazawa
- Fukushima Prefectural Institute of Public Health, Fukushima, Japan
| | - Shohei Fujita
- Fukushima Prefectural Institute of Public Health, Fukushima, Japan
| | - Ayaka Kobayashi
- Fukushima Prefectural Institute of Public Health, Fukushima, Japan
| | - Yoshimi Date
- Kanagawa Prefectural Institute of Public Health, Kanagawa, Japan
| | | | | | | | | | - the Working Group for Beta-Hemolytic Streptococci in Japan
- National Institute of Infectious Diseases, Tokyo, Japan
- Tokyo Metropolitan Institute of Public Health, Tokyo, Japan
- Oita Prefectural Institute of Health and Environment, Oita, Japan
- Osaka Institute of Public Health, Osaka, Japan
- Yamaguchi Prefectural Institute of Public Health and Environment, Yamaguchi, Japan
- Fukushima Prefectural Institute of Public Health, Fukushima, Japan
- Kanagawa Prefectural Institute of Public Health, Kanagawa, Japan
- Toyama Institute of Health, Toyama, Japan
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12
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Nagano N, Katayama D, Imaizumi T, Hijikata M, Okahashi A, Tsuji Y, Morioka I. Fluctuations in unbound bilirubin levels during acetaminophen therapy for patent ductus arteriosus. Pediatr Int 2023; 65:e15434. [PMID: 36478301 DOI: 10.1111/ped.15434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/26/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022]
Affiliation(s)
- Nobuhiko Nagano
- Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - Daichi Katayama
- Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - Takayuki Imaizumi
- Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - Midori Hijikata
- Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - Aya Okahashi
- Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - Yasuhiro Tsuji
- Center for Pharmacist Education, School of Pharmacy, Nihon University, Funabashi, Japan
| | - Ichiro Morioka
- Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
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13
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Kuramoto N, Saito S, Fujii T, Kaneko Y, Saito R, Tanaka M, Takada H, Nakano K, Saito K, Sugimoto N, Sasaki S, Harigai M, Suzuki Y. Characteristics of rheumatoid arthritis with immunodeficiency-associated lymphoproliferative disorders to regress spontaneously by the withdrawal of methotrexate and their clinical course: A retrospective, multicenter, case-control study. Mod Rheumatol 2022; 32:24-31. [PMID: 33496194 DOI: 10.1080/14397595.2021.1879362] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 01/18/2021] [Indexed: 10/22/2022]
Abstract
OBJECTIVE To investigate clinical characteristics and time course of lymphoproliferative disorders (LPDs) in rheumatoid arthritis (RA) patients after methotrexate (MTX) discontinuation, in those who achieved spontaneous regression (SR). METHODS We retrospectively reviewed clinical data from RA patients with LPDs obtained from eight institutions between 2000 and 2017 and compared clinical and pathological findings between SR and non-SR groups. RESULTS Among 232 RA patients with LPDs, 216 were treated with MTX at the onset of LPD and 144 (66.7%) achieved SR after MTX discontinuation. Higher MTX doses, high titers of anti-CCP antibodies (>13.5 U/mL), and lower LDH and soluble IL-2 receptor levels were associated with SR. Lymphocyte count was decreased at LPD onset and increased at 2 weeks after MTX discontinuation in the SR group. Epstein-Barr virus-positive mucocutaneous ulcer, reactive lymphoid hyperplasia and unclassifiable B-cell lymphoma, were more frequent in the SR than in the non-SR group. In multivariable analysis, diffuse large B-cell lymphomas was an independent predictive factor for non-SR. In the patients with SR, 73.9% achieved partial or complete regression as early as 2 weeks after MTX discontinuation. CONCLUSION SR and non-SR in RA patients with LPDs after MTX discontinuation were associated with certain clinical characteristics.
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Affiliation(s)
- Nobuo Kuramoto
- Department of Rheumatology and Clinical Immunology, Wakayama Medical University, Wakayama, Japan
| | - Shuntaro Saito
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Takao Fujii
- Department of Rheumatology and Clinical Immunology, Wakayama Medical University, Wakayama, Japan
- Working Group on the Rheumatoid Arthritis-associated Lymphoproliferative Disorders of the Japan College of Rheumatology
| | - Yuko Kaneko
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
- Working Group on the Rheumatoid Arthritis-associated Lymphoproliferative Disorders of the Japan College of Rheumatology
| | - Rintaro Saito
- Department of Rheumatology and Clinical Immunology, Kyoto University, Kyoto, Japan
| | - Masao Tanaka
- Working Group on the Rheumatoid Arthritis-associated Lymphoproliferative Disorders of the Japan College of Rheumatology
- Department of Advanced Medicine for Rheumatic Diseases, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hideto Takada
- Department of Rheumatology, Tokyo Women's Medical University School of Medicine, Tokyo, Japan
| | - Kazuhisa Nakano
- Working Group on the Rheumatoid Arthritis-associated Lymphoproliferative Disorders of the Japan College of Rheumatology
- The First Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Fukuoka, Japan
| | - Kazuyoshi Saito
- Working Group on the Rheumatoid Arthritis-associated Lymphoproliferative Disorders of the Japan College of Rheumatology
- Tobata General Hospital, Fukuoka, Japan
| | - Naoki Sugimoto
- Department of Rheumatology, Tokyo Women's Medical University School of Medicine, Tokyo, Japan
| | - Sho Sasaki
- Division of Rheumatology, Tokai University Hachioji Hospital, Tokyo, Japan
| | - Masayoshi Harigai
- Working Group on the Rheumatoid Arthritis-associated Lymphoproliferative Disorders of the Japan College of Rheumatology
- Department of Rheumatology, Tokyo Women's Medical University School of Medicine, Tokyo, Japan
| | - Yasuo Suzuki
- Working Group on the Rheumatoid Arthritis-associated Lymphoproliferative Disorders of the Japan College of Rheumatology
- Division of Rheumatology, Tokai University Hachioji Hospital, Tokyo, Japan
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14
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Tao H, Nagano K, Tasaki I, Zhang TQ, Ishizaka T, Gao JQ, Harada K, Hirata K, Tsujino H, Higashisaka K, Tsutsumi Y. Development and Evaluation of a System for the Semi-Quantitative Determination of the Physical Properties of Skin After Exposure to Silver Nanoparticles. Nanoscale Res Lett 2020; 15:187. [PMID: 32990829 PMCID: PMC7524913 DOI: 10.1186/s11671-020-03421-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 09/22/2020] [Indexed: 05/21/2023]
Abstract
In order to ensure the safe usage of silver nanoparticles (nAgs) in cosmetics, it is necessary to reveal the physical properties of nAgs inside the skin, as these properties may change during the process of percutaneous absorption. In this study, we aimed to establish an analytical system based on single particle inductively coupled plasma mass spectrometry (sp-ICP-MS) to determine the physical properties of nAgs in the skin. First, we optimized a pretreatment method for solubilizing the skin samples and then showed that most of the nAgs were recovered by sodium hydroxide treatment while remaining in particle form. For separating the skin into the epidermis and dermis, we screened several conditions of microwave irradiation. The sp-ICP-MS analysis indicated that the application of 200 W for 30 s was optimal, as this condition ensured complete separation of skin layers without changing the physical properties of the majority of nAgs. Finally, we evaluated the in vivo application by analyzing the quantity as well as the physical properties of Ag in the epidermis, dermis, and peripheral blood of mice after exposing the skin to nAgs or Ag+. Subsequent sp-ICP-MS analysis indicated that nAgs could be absorbed and distributed into the deeper layers in the ionized form, whereas Ag+ was absorbed and distributed without a change in physical properties. This study indicates that in order to obtain a comprehensive understanding of the response of skin following exposure to nAgs, it is essential to consider the distribution and particle size of not only nAgs but also Ag+ released from nAgs into the skin.
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Affiliation(s)
- Hong Tao
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871 Japan
| | - Kazuya Nagano
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871 Japan
- Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka 565-0871 Japan
| | - Ikkei Tasaki
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871 Japan
| | - Tian-qi Zhang
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871 Japan
| | - Takuya Ishizaka
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871 Japan
| | - Jian-Qing Gao
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058 PR China
| | - Kazuo Harada
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871 Japan
- Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka 565-0871 Japan
| | - Kazumasa Hirata
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871 Japan
| | - Hirofumi Tsujino
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871 Japan
| | - Kazuma Higashisaka
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871 Japan
- Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka 565-0871 Japan
| | - Yasuo Tsutsumi
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871 Japan
- Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka 565-0871 Japan
- The Center for Advanced Medical Engineering and Informatics, Osaka University, 1-6, Yamadaoka, Suita, Osaka 565-0871 Japan
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15
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Sado M, Ninomiya A, Shikimoto R, Ikeda B, Baba T, Yoshimura K, Mimura M. The estimated cost of dementia in Japan, the most aged society in the world. PLoS One 2018; 13:e0206508. [PMID: 30418983 PMCID: PMC6231619 DOI: 10.1371/journal.pone.0206508] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 10/14/2018] [Indexed: 11/24/2022] Open
Abstract
Objective Dementia has become a global critical issue. It is estimated that the global cost of dementia was 818 billion USD in 2015. The situation in Japan, which is the most aged country in the world, should be critical. However, the societal cost of dementia in Japan has not yet been estimated. This study was designed to estimate cost of dementia from societal perspective. Design We estimated the cost from societal perspective with prevalence based approach. Setting, participants and measures Main data sources for the parameters to estimate the costs are the National Data Base, a nationwide representative individual-level database for healthcare utilization, the Survey of Long-Term Care Benefit Expenditures, a nationwide survey based on individual-level secondary data for formal long-term care utilization, and the results of an informal care time survey for informal care cost. We conducted the analyses with ‘probabilistic modeling’ using the parameters obtained to estimate the costs of dementia. We also projected future costs. Results The societal costs of dementia in Japan in 2014 were estimated at JPY 14.5 trillion (se 66.0 billion). Of these, the costs for healthcare, long-term care, and informal care are JPY 1.91 trillion (se 4.91 billion), JPY 6.44 trillion (se 63.2 billion), and JPY 6.16 trillion (se 12.5 billion) respectively. The cost per person with dementia appeared to be JPY5.95 million (se 27 thousand). The total costs would reach JPY 24.3 trillion by 2060, which is 1.6 times higher than that in 2014. Conclusions The societal cost of dementia in Japan appeared to be considerable. Interventions to mitigate this impact should be considered.
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Affiliation(s)
- Mitsuhiro Sado
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan
- Center for Stress Research, Keio University, Tokyo, Japan
- * E-mail:
| | - Akira Ninomiya
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan
- Center for Stress Research, Keio University, Tokyo, Japan
| | - Ryo Shikimoto
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan
| | - Baku Ikeda
- Internal medicine Division, Ikeda hospital, Nonoichi, Japan
| | - Toshiaki Baba
- National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Kimio Yoshimura
- Department of Health Policy and Management, Keio University School of Medicine, Tokyo, Japan
| | - Masaru Mimura
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan
- Center for Stress Research, Keio University, Tokyo, Japan
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16
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Kazumata K, Tha KK, Uchino H, Ito M, Nakayama N, Abumiya T. Mapping altered brain connectivity and its clinical associations in adult moyamoya disease: A resting-state functional MRI study. PLoS One 2017; 12:e0182759. [PMID: 28783763 PMCID: PMC5544229 DOI: 10.1371/journal.pone.0182759] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Accepted: 07/24/2017] [Indexed: 12/22/2022] Open
Abstract
Detection of subtle ischemic injuries in moyamoya disease may enable optimization of timing of revascularization surgery, and could potentially improve functional outcomes. Resting-state functional magnetic resonance imaging (rs-fMRI) is widely used to study functional organization of the brain, but it remains unclear whether rs-fMRI could elucidate distinct characteristics in moyamoya disease. Here, we aimed to determine changes in a conventional rs-fMRI measure and analyze any associations with clinical symptoms and cerebral hemodynamics. Thirty-one adults with moyamoya disease and 25 adult controls underwent rs-fMRI, in which we measured brain connectivity via temporal correlations of low-frequency BOLD signals. We identified the extent of between-group differences with multivoxel pattern analysis. Seed-based analysis was performed to determine associations with vascular lesions, symptoms, and regional cerebral blood flow (rCBF). There was significantly altered connectivity in the precentral gyrus, operculo-insular region, precuneus, cingulate cortex, and middle frontal gyrus in moyamoya disease. There was reduced connectivity in the left insula, left precuneus, right precentral, and right middle frontal regions, which form part of the salience, default mode, motor, and central executive networks, respectively. Patients with ischemic motor-related symptoms showed significantly decreased connectivity in precentral homotopic regions compared with those without, while there were no differences in vascular lesions or rCBF. Connectivity between the right occipital and left hippocampus was significantly associated with cognitive performance and posterior cerebral artery involvement. Our results demonstrate distinct alterations in the temporal correlations of low-frequency BOLD signals, predominantly in resting-state networks in moyamoya disease. Additionally, rs-fMRI measures were associated with ischemic motor-related symptoms and cognitive performance in the patients. Thus, rs-fMRI may offer a useful non-invasive method of acquiring additional information beyond cerebral perfusion as part of clinical investigations in patients with moyamoya disease.
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Affiliation(s)
- Ken Kazumata
- Department of Neurosurgery, Hokkaido University Graduate School of Medicine, Kita, Sapporo, Japan
- * E-mail:
| | - Khin Khin Tha
- Department of Radiation Medicine, Hokkaido University Graduate School of Medicine, Kita, Sapporo, Japan
| | - Haruto Uchino
- Department of Neurosurgery, Hokkaido University Graduate School of Medicine, Kita, Sapporo, Japan
| | - Masaki Ito
- Department of Neurosurgery, Hokkaido University Graduate School of Medicine, Kita, Sapporo, Japan
| | - Naoki Nakayama
- Department of Neurosurgery, Hokkaido University Graduate School of Medicine, Kita, Sapporo, Japan
| | - Takeo Abumiya
- Department of Neurosurgery, Hokkaido University Graduate School of Medicine, Kita, Sapporo, Japan
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17
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Mitobe J, Sinha R, Mitra S, Nag D, Saito N, Shimuta K, Koizumi N, Koley H. An attenuated Shigella mutant lacking the RNA-binding protein Hfq provides cross-protection against Shigella strains of broad serotype. PLoS Negl Trop Dis 2017; 11:e0005728. [PMID: 28727722 PMCID: PMC5544247 DOI: 10.1371/journal.pntd.0005728] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 08/04/2017] [Accepted: 06/19/2017] [Indexed: 11/19/2022] Open
Abstract
Few live attenuated vaccines protect against multiple serotypes of bacterial pathogen because host serotype-specific immune responses are limited to the serotype present in the vaccine strain. Here, immunization with a mutant of Shigella flexneri 2a protected guinea pigs against subsequent infection by S. dysenteriae type 1 and S. sonnei strains. This deletion mutant lacked the RNA-binding protein Hfq leading to increased expression of the type III secretion system via loss of regulation, resulting in attenuation of cell viability through repression of stress response sigma factors. Such increased antigen production and simultaneous attenuation were expected to elicit protective immunity against Shigella strains of heterologous serotypes. Thus, the vaccine potential of this mutant was tested in two guinea pig models of shigellosis. Animals vaccinated in the left eye showed fewer symptoms upon subsequent challenge via the right eye, and even survived subsequent intestinal challenge. In addition, oral vaccination effectively induced production of immunoglobulins without severe side effects, again protecting all animals against subsequent intestinal challenge with S. dysenteriae type 1 or S. sonnei strains. Antibodies against common virulence proteins and the O-antigen of S. flexneri 2a were detected by immunofluorescence microscopy. Reaction of antibodies with various strains, including enteroinvasive Escherichia coli, suggested that common virulence proteins induced protective immunity against a range of serotypes. Therefore, vaccination is expected to cover not only the most prevalent serotypes of S. sonnei and S. flexneri 2a, but also various Shigella strains, including S. dysenteriae type 1, which produces Shiga toxin.
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Affiliation(s)
- Jiro Mitobe
- Department of Bacteriology I, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan
- * E-mail:
| | - Ritam Sinha
- Division of Bacteriology, National Institute of Cholera and Enteric Diseases, Beliaghata, Kolkata, India
| | - Soma Mitra
- Department of Bacteriology I, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan
- Division of Bacteriology, National Institute of Cholera and Enteric Diseases, Beliaghata, Kolkata, India
| | - Dhrubajyoti Nag
- Division of Bacteriology, National Institute of Cholera and Enteric Diseases, Beliaghata, Kolkata, India
| | - Noriko Saito
- Laboratory of Electron Microscopy, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan
| | - Ken Shimuta
- Department of Bacteriology I, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan
| | - Nobuo Koizumi
- Department of Bacteriology I, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan
| | - Hemanta Koley
- Division of Bacteriology, National Institute of Cholera and Enteric Diseases, Beliaghata, Kolkata, India
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18
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Fuku N, Alis R, Yvert T, Zempo H, Naito H, Abe Y, Arai Y, Murakami H, Miyachi M, Pareja-Galeano H, Emanuele E, Hirose N, Lucia A. Muscle-Related Polymorphisms (MSTN rs1805086 and ACTN3 rs1815739) Are Not Associated with Exceptional Longevity in Japanese Centenarians. PLoS One 2016; 11:e0166605. [PMID: 27861536 PMCID: PMC5115755 DOI: 10.1371/journal.pone.0166605] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 11/01/2016] [Indexed: 01/07/2023] Open
Abstract
Myostatin (MSTN) and α-actinin-3 (ACTN3) genes are potentially associated with preservation of muscle mass and oxidative capacity, respectively. To explore the possible role of these genes in exceptional longevity (EL), the allele/genotype frequency distribution of two polymorphisms in MSTN (rs1805086, K153R) and ACTN3 (rs1815739, R577X) was studied in Japanese centenarians of both sexes (n = 742) and healthy controls (n = 814). The rs1805086 R-allele (theoretically associated with muscle mass preservation at the expense of oxidative capacity) was virtually absent in the two groups, where genotype distributions were virtually identical. Likewise, no differences in allele (p = 0.838 (women); p = 0.193 (men); p = 0.587 (both sexes)) or genotype distribution were found between groups for ACTN3 rs1815739 (p = 0.975 (women), p = 0.136 (men), p = 0.752 (both sexes)). Of note, however, the frequency of the rs1805086 R-allele observed here is the lowest been reported to date whereas that of the ‘highly oxidative/efficient’ rs1815739 XX genotype in Japanese male centenarians (33.3%) or supercentenarians of both sexes (≥110 years) are the highest (32.6%), for a non-American population. No definite conclusions can be inferred in relation to EL owing to its lack of association with both rs1815739 and rs1805086. However, it cannot be excluded that these gene variants could eventually be related to a “healthy” metabolic phenotype in the Japanese population. Further research might determine if such metabolic profile is among the factors that can potentially predispose these individuals to live longer than Caucasians and what genetic variants might be actually involved.
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Affiliation(s)
- Noriyuki Fuku
- Graduate School of Health and Sports Science, Juntendo University, Chiba, Japan
| | - Rafael Alis
- School of Medicine and Research Institute “Dr. Viña Giner”, Molecular and Mitochondrial Medicine, Catholic University of Valencia San Vicente Mártir, Valencia, Spain
- Servicio de Nefrología, Hospital Universitario y Politécnico La Fe, Valencia, Spain
- * E-mail:
| | - Thomas Yvert
- School of Doctorate Studies and Research, Universidad Europea de Madrid, Madrid, Spain
| | - Hirofumi Zempo
- Graduate School of Health and Sports Science, Juntendo University, Chiba, Japan
| | - Hisashi Naito
- Graduate School of Health and Sports Science, Juntendo University, Chiba, Japan
| | - Yukiko Abe
- Center for Supercentenarian Study, Keio University School of Medicine, Tokyo, Japan
| | - Yasumichi Arai
- Center for Supercentenarian Study, Keio University School of Medicine, Tokyo, Japan
| | - Haruka Murakami
- Department of Health Promotion and Exercise, National Institute of Health Nutrition, Tokyo, Japan
| | - Motohiko Miyachi
- Department of Health Promotion and Exercise, National Institute of Health Nutrition, Tokyo, Japan
| | - Helios Pareja-Galeano
- European University of Madrid, Madrid, Spain
- Research Institute of Hospital 12 de Octubre (“i+12”), Madrid, Spain
| | | | - Nobuyoshi Hirose
- Center for Supercentenarian Study, Keio University School of Medicine, Tokyo, Japan
| | - Alejandro Lucia
- European University of Madrid, Madrid, Spain
- Research Institute of Hospital 12 de Octubre (“i+12”), Madrid, Spain
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19
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Ishii S, Chang C, Tanaka T, Kuroda A, Tsuji T, Akishita M, Iijima K. The Association between Sarcopenic Obesity and Depressive Symptoms in Older Japanese Adults. PLoS One 2016; 11:e0162898. [PMID: 27627756 PMCID: PMC5023182 DOI: 10.1371/journal.pone.0162898] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [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: 05/07/2016] [Accepted: 08/30/2016] [Indexed: 12/20/2022] Open
Abstract
The effects of sarcopenic obesity, the co-existence of sarcopenia and obesity, on mood disorders have not been studies extensively. Our objective was to examine the association of depressive symptoms with sarcopenia and obesity status in older Japanese adults. We analyzed data from 1731 functionally-independent, community-dwelling Japanese adults aged 65 years or older (875 men, 856 women) randomly selected from the resident register of Kashiwa city, Chiba, Japan in 2012. Sarcopenia was defined based on appendicular skeletal muscle mass, grip strength and usual gait speed. Obesity was defined as the highest sex-specific quintile of the percentage body fat. Depressive symptoms were defined as a Geriatric Depression Scale 15-item score ≥ 6. Multiple logistic regression was employed to examine the association of depressive symptoms with four groups defined by the presence/absence of sarcopenia and obesity. The prevalence of depressive symptoms was 10.1% and the proportions of sarcopenia/obesity, sarcopenia/non-obesity, non-sarcopenia/obesity, non-sarcopenia/non-obesity were 3.7%, 13.6%, 16.9% and 65.8%, respectively. After adjustment for potential confounders, sarcopenia/obesity was positively associated with depressive symptoms compared with non-sarcopenia/non-obesity, whereas either sarcopenia or obesity alone was not associated with depressive symptoms. The association was particularly pronounced in those aged 65 to 74 years in age-stratified analysis. We conclude that our findings suggest a synergistic impact exerted by sarcopenic obesity on the risk of depressive symptoms, particularly in those aged 65 to 74 years.
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Affiliation(s)
- Shinya Ishii
- Department of Geriatric Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Chang Chang
- Department of Geriatric Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Tomoki Tanaka
- Institute of Gerontology, The University of Tokyo, Tokyo, Japan
| | - Aki Kuroda
- Institute of Gerontology, The University of Tokyo, Tokyo, Japan
| | - Tetsuo Tsuji
- Institute of Gerontology, The University of Tokyo, Tokyo, Japan
| | - Masahiro Akishita
- Department of Geriatric Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Katsuya Iijima
- Institute of Gerontology, The University of Tokyo, Tokyo, Japan
- * E-mail:
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