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Tatsumi Y, Yano M, Wakusawa S, Miyajima H, Ishikawa T, Imashuku S, Takano A, Nihei W, Kato A, Kato K, Hayashi H, Yoshioka K, Hayashi K. A Revised Classification of Primary Iron Overload Syndromes. J Clin Transl Hepatol 2024; 12:346-356. [PMID: 38638373 PMCID: PMC11022062 DOI: 10.14218/jcth.2023.00290] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 11/02/2023] [Accepted: 12/11/2023] [Indexed: 04/20/2024] Open
Abstract
Background and Aims The clinical introduction of hepcidin25 (Hep25) has led to a more detailed understanding of its relationship with ferroportin (FP) and divalent metal transporter1 in primary iron overload syndromes (PIOSs). In 2012, we proposed a classification of PIOSs based on the Hep25/FP system, which consists of prehepatic aceruloplasminemia, hepatic hemochromatosis (HC), and posthepatic FP disease (FP-D). However, in consideration of accumulated evidence on PIOSs, we aimed to renew the classification. Methods We reviewed the 2012 classification and retrospectively renewed it according to new information on PIOSs. Results Iron-loading anemia was included in PIOSs as a prehepatic form because of the newly discovered erythroferrone-induced suppression of Hep25, and the state of traditional FP-D was remodeled as the BIOIRON proposal. The key molecules responsible for prehepatic PIOSs are low transferrin saturation in aceruloplasminemia and increased erythroferrone production by erythroblasts in iron-loading anemia. Hepatic PIOSs comprise four genotypes of HC, in each of which the synthesis of Hep25 is inappropriately reduced in the liver. Hepatic Hep25 synthesis is adequate in posthepatic PIOSs; however, two mutant FP molecules may resist Hep25 differently, resulting in SLC40A1-HC and FP-D, respectively. PIOS phenotypes are diagnosed using laboratory tests, including circulating Hep25, followed by suitable treatments. Direct sequencing of the candidate genes may be outsourced to gene centers when needed. Laboratory kits for the prevalent mutations, such as C282Y, may be the first choice for a genetic analysis of HC in Caucasians. Conclusions The revised classification may be useful worldwide.
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Affiliation(s)
- Yasuaki Tatsumi
- Department of Medical Biochemistry, Faculty of Pharmaceutical Sciences, Toho University, Funabashi, Japan
| | - Motoyoshi Yano
- Department of Gastroenterology, Yokkaichi Municipal Hospital, Yokkaichi, Japan
| | - Shinya Wakusawa
- Department of Medical Technology, Shubun University, Ichinomiya, Japan
| | - Hiroaki Miyajima
- Department of Medicine and Neurology, Tenryu Kohseikai Clinic, Hamamatsu, Japan
| | - Tetsuya Ishikawa
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shinsaku Imashuku
- Department of Laboratory Medicine, Uji-Tokushukai Medical Center, Uji, Japan
| | - Atsuko Takano
- Department of Medicine, Saiseikai Takaoka Hospital, Takaoka, Japan
| | - Wataru Nihei
- Department of Medicine, Aichi-Gakuin University School of Pharmacy, Nagoya, Japan
| | - Ayako Kato
- Department of Medicine, Aichi-Gakuin University School of Pharmacy, Nagoya, Japan
| | - Koichi Kato
- Department of Medicine, Aichi-Gakuin University School of Pharmacy, Nagoya, Japan
| | - Hisao Hayashi
- Department of Medicine, Aichi-Gakuin University School of Pharmacy, Nagoya, Japan
| | - Kentaro Yoshioka
- Department of Gastroenterology, FNPS Meijo Hospital, Nagoya, Japan
| | - Kazuhiko Hayashi
- Department of Gastroenterology, FNPS Meijo Hospital, Nagoya, Japan
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Tatsumi Y, Hayash H, Kato K. Comment to a patient with SLC40A1-HC successfully treated using red blood cell apheresis. Med Mol Morphol 2024; 57:82. [PMID: 38010478 DOI: 10.1007/s00795-023-00375-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 10/30/2023] [Indexed: 11/29/2023]
Affiliation(s)
- Yasuaki Tatsumi
- Department of Medical Biochemistry, Faculty of Pharmaceutical Sciences, Toho University, Funabashi, 274-8510, Japan
| | - Hisao Hayash
- Department of Medicine, Aichi Gakuin University School of Pharmacy, 1-100 Kusumoto-Cho, Chikusa-Ku, Nagoya, 464-8650, Japan
| | - Koichi Kato
- Department of Medicine, Aichi Gakuin University School of Pharmacy, 1-100 Kusumoto-Cho, Chikusa-Ku, Nagoya, 464-8650, Japan.
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Koide R, Shigemasa R, Hashimoto K, Tatsumi Y, Hayashi H, Suzuki T, Wakusawa S. Distribution Analysis of Iron and Copper by STEM-EDX Spectroscopy of Hemosiderin Particles in the Liver of Rats Overloaded With Iron. In Vivo 2024; 38:114-121. [PMID: 38148091 PMCID: PMC10756453 DOI: 10.21873/invivo.13417] [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: 08/03/2023] [Revised: 09/09/2023] [Accepted: 09/15/2023] [Indexed: 12/28/2023]
Abstract
BACKGROUND/AIM Our recent studies have indicated that trace copper co-existed with iron in hemosiderin particles of human genetic iron overload. To understand this phenomenon, we analyzed hemosiderin particles in iron-overloaded rat liver by using scanning transmission electron microscopy - energy-dispersive X-ray (STEM-EDX) spectroscopy. MATERIALS AND METHODS Samples for STEM-EDX spectroscopy were prepared from the liver of rats administered an intraperitoneal injection of dextran iron. RESULTS The micro-domain analysis with STEM-EDX spectroscopy showed that dense bodies contained high levels of iron and trace copper. Quantitative analysis of copper levels in the liver specimen using atomic spectrophotometry showed that copper concentration in the liver was not increased by iron overload. These findings suggest that the overload of iron induced distribution of trace copper to hemosiderin particles without changing cellular copper levels. CONCLUSION Co-existence of copper with iron was observed in hemosiderin particles of the liver of an experimental model of iron overload, suggesting that iron overload induced distribution of trace copper into hemosiderin particles.
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Affiliation(s)
- Ryoji Koide
- Division of Medical Laboratory Sciences, Department of Radiological and Medical Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Ryota Shigemasa
- Division of Medical Laboratory Sciences, Department of Radiological and Medical Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Katsunori Hashimoto
- Division of Medical Laboratory Sciences, Department of Radiological and Medical Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
- Department of Medical Technology, Faculty of Medical Sciences, Shubun University, Ichinomiya, Japan
| | - Yasuaki Tatsumi
- Department of Pharmacotherapeutics, Aichi Gakuin University School of Pharmacy, Nagoya, Japan
| | - Hisao Hayashi
- Department of Pharmacotherapeutics, Aichi Gakuin University School of Pharmacy, Nagoya, Japan
| | - Takayoshi Suzuki
- Department of Medical Technology, Faculty of Medical Sciences, Shubun University, Ichinomiya, Japan
| | - Shinya Wakusawa
- Division of Medical Laboratory Sciences, Department of Radiological and Medical Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan;
- Department of Medical Technology, Faculty of Medical Sciences, Shubun University, Ichinomiya, Japan
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Tatsumi Y, Kato A, Niimi N, Yako H, Himeno T, Kondo M, Tsunekawa S, Kato Y, Kamiya H, Nakamura J, Higai K, Sango K, Kato K. Docosahexaenoic Acid Suppresses Oxidative Stress-Induced Autophagy and Cell Death via the AMPK-Dependent Signaling Pathway in Immortalized Fischer Rat Schwann Cells 1. Int J Mol Sci 2022; 23:ijms23084405. [PMID: 35457223 PMCID: PMC9027959 DOI: 10.3390/ijms23084405] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 10/18/2021] [Revised: 04/05/2022] [Accepted: 04/14/2022] [Indexed: 01/27/2023] Open
Abstract
Autophagy is the process by which intracellular components are degraded by lysosomes. It is also activated by oxidative stress; hence, autophagy is thought to be closely related to oxidative stress, one of the major causes of diabetic neuropathy. We previously reported that docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) induced antioxidant enzymes and protected Schwann cells from oxidative stress. However, the relationship between autophagy and oxidative stress-induced cell death in diabetic neuropathy has not been elucidated. Treatment with tert-butyl hydroperoxide (tBHP) decreased the cell survival rate, as measured by an MTT assay in immortalized Fischer rat Schwann cells 1 (IFRS1). A DHA pretreatment significantly prevented tBHP-induced cytotoxicity. tBHP increased autophagy, which was revealed by the ratio of the initiation markers, AMP-activated protein kinase, and UNC51-like kinase phosphorylation. Conversely, the DHA pretreatment suppressed excessive tBHP-induced autophagy signaling. Autophagosomes induced by tBHP in IFRS1 cells were decreased to control levels by the DHA pretreatment whereas autolysosomes were only partially decreased. These results suggest that DHA attenuated excessive autophagy induced by oxidative stress in Schwann cells and may be useful to prevent or reduce cell death in vitro. However, its potentiality to treat diabetic neuropathy must be validated in in vivo studies.
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Affiliation(s)
- Yasuaki Tatsumi
- Laboratory of Medicine, Aichi Gakuin University School of Pharmacy, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya 464-8650, Japan; (Y.T.); (A.K.)
- Department of Medical Biochemistry, Faculty of Pharmaceutical Sciences, Toho University, Miyama 2-2-1, Funabashi 274-8510, Japan;
| | - Ayako Kato
- Laboratory of Medicine, Aichi Gakuin University School of Pharmacy, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya 464-8650, Japan; (Y.T.); (A.K.)
| | - Naoko Niimi
- Diabetic Neuropathy Project, Department of Diseases and Infection, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya, Tokyo 156-8506, Japan; (N.N.); (H.Y.); (K.S.)
| | - Hideji Yako
- Diabetic Neuropathy Project, Department of Diseases and Infection, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya, Tokyo 156-8506, Japan; (N.N.); (H.Y.); (K.S.)
| | - Tatsuhito Himeno
- Division of Diabetes, Department of Internal Medicine, Aichi Medical University School of Medicine, 1-1 Yazakokarimate, Nagakute 480-1195, Japan; (T.H.); (M.K.); (S.T.); (Y.K.); (H.K.); (J.N.)
| | - Masaki Kondo
- Division of Diabetes, Department of Internal Medicine, Aichi Medical University School of Medicine, 1-1 Yazakokarimate, Nagakute 480-1195, Japan; (T.H.); (M.K.); (S.T.); (Y.K.); (H.K.); (J.N.)
| | - Shin Tsunekawa
- Division of Diabetes, Department of Internal Medicine, Aichi Medical University School of Medicine, 1-1 Yazakokarimate, Nagakute 480-1195, Japan; (T.H.); (M.K.); (S.T.); (Y.K.); (H.K.); (J.N.)
| | - Yoshiro Kato
- Division of Diabetes, Department of Internal Medicine, Aichi Medical University School of Medicine, 1-1 Yazakokarimate, Nagakute 480-1195, Japan; (T.H.); (M.K.); (S.T.); (Y.K.); (H.K.); (J.N.)
| | - Hideki Kamiya
- Division of Diabetes, Department of Internal Medicine, Aichi Medical University School of Medicine, 1-1 Yazakokarimate, Nagakute 480-1195, Japan; (T.H.); (M.K.); (S.T.); (Y.K.); (H.K.); (J.N.)
| | - Jiro Nakamura
- Division of Diabetes, Department of Internal Medicine, Aichi Medical University School of Medicine, 1-1 Yazakokarimate, Nagakute 480-1195, Japan; (T.H.); (M.K.); (S.T.); (Y.K.); (H.K.); (J.N.)
| | - Koji Higai
- Department of Medical Biochemistry, Faculty of Pharmaceutical Sciences, Toho University, Miyama 2-2-1, Funabashi 274-8510, Japan;
| | - Kazunori Sango
- Diabetic Neuropathy Project, Department of Diseases and Infection, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya, Tokyo 156-8506, Japan; (N.N.); (H.Y.); (K.S.)
| | - Koichi Kato
- Laboratory of Medicine, Aichi Gakuin University School of Pharmacy, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya 464-8650, Japan; (Y.T.); (A.K.)
- Correspondence: ; Tel.: +81-52-757-6778
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Shima A, Tanaka H, Okamura T, Nishikawa T, Godai K, Kimura T, Tatsumi Y, Morino A, Kawatsu Y, Miyamatsu N. Providing mammography in workplaces improved screening rates: cluster randomized controlled trial. Eur J Public Health 2021. [DOI: 10.1093/eurpub/ckab165.375] [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
Background
Despite sufficient evidence on the importance of breast cancer screening, the screening rate has remained less than 50% in Japan. To promote behavioral change of individuals, it is important to reduce barriers to taking screening. The purpose of this study was to examine the effect of an environmental approach providing opportunities for mammography (MMG) in workplaces.
Methods
Female employees aged 40 years or older were eligible. Supermarket stores were randomly assigned into two groups, the intervention arm (leaflet and MMG) and the control arm (leaflet). From May to July 2018, participants in the intervention arm were given a leaflet informing the subsidies for breast cancer screening and were provided the opportunity to have MMG in their workplace. Participants in the control group were given the same leaflet, but they had to take the screening outside the workplace as usual. The primary outcome was the breast cancer screening rate in 2018, evaluated using self-administered questionnaires. The odds ratio (OR) and 95% confidence intervals (CIs) for the screening rate in the intervention arm compared with the control arm was estimated using multilevel logistic regression.
Results
We analyzed 1624 participants (mean age was 53 years) from 25 supermarket stores (intervention: 578 patients in 8 stores, control: 1046 patients in 17 stores). The screening rate in the intervention arm was 312 (54%) and was 125 (12%) in the control arm. The OR (and 95% CIs) was 7.81 (5.03-12.12) in the final model adjusted store level effects (i.e., stores and screening rate in 2017 at each store) and individual age and current smoking.
Conclusions
In a worksite-based cluster-randomized controlled trial conducted in a Japanese population, an environmental approach providing MMG opportunities in workplaces significantly increased the self-reported breast cancer screening rate within one year. (UMIN000030465)
Key messages
Providing the opportunity of mammography in Japanese supermarket stores improved the breast cancer screening rate. An environmental approach reducing barriers to screening may be more effective than conventional approaches in improving breast cancer screening rate.
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Affiliation(s)
- A Shima
- Department of Clinical Nursing, Shiga University of Medical Science, Shiga, Japan
- Occupational Health Care Office, Heiwado Co.,Ltd, Shiga, Japan
| | - H Tanaka
- Fujiidera Public Health Center of Osaka Prefecture, Osaka, Japan
| | - T Okamura
- Department of Preventive Medicine and Public Health, Keio University, Tokyo, Japan
| | - T Nishikawa
- Department of Health and Nutrition, Kyoto Koka Wemen’s University, Kyoto, Japan
| | - K Godai
- Department of Health Promotion Science, Osaka University Graduate School of Medicine, Osaka, Japan
| | - T Kimura
- General Incorporated Foundation Kinki Health Administration, Shiga, Japan
| | - Y Tatsumi
- Department of Hygiene and Public Health, Teikyo University, Tokyo, Japan
| | - A Morino
- Department of Clinical Nursing, Shiga University of Medical Science, Shiga, Japan
- Occupational Health Care Office, Heiwado Co.,Ltd, Shiga, Japan
| | - Y Kawatsu
- Occupational Health Care Office, Heiwado Co.,Ltd, Shiga, Japan
| | - N Miyamatsu
- Department of Clinical Nursing, Shiga University of Medical Science, Shiga, Japan
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Yako H, Niimi N, Kato A, Takaku S, Tatsumi Y, Nishito Y, Kato K, Sango K. Role of pyruvate in maintaining cell viability and energy production under high-glucose conditions. Sci Rep 2021; 11:18910. [PMID: 34556698 PMCID: PMC8460646 DOI: 10.1038/s41598-021-98082-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 09/03/2021] [Indexed: 11/25/2022] Open
Abstract
Pyruvate functions as a key molecule in energy production and as an antioxidant. The efficacy of pyruvate supplementation in diabetic retinopathy and nephropathy has been shown in animal models; however, its significance in the functional maintenance of neurons and Schwann cells under diabetic conditions remains unknown. We observed rapid and extensive cell death under high-glucose (> 10 mM) and pyruvate-starved conditions. Exposure of Schwann cells to these conditions led to a significant decrease in glycolytic flux, mitochondrial respiration and ATP production, accompanied by enhanced collateral glycolysis pathways (e.g., polyol pathway). Cell death could be prevented by supplementation with 2-oxoglutarate (a TCA cycle intermediate), benfotiamine (the vitamin B1 derivative that suppresses the collateral pathways), or the poly (ADP-ribose) polymerase (PARP) inhibitor, rucaparib. Our findings suggest that exogenous pyruvate plays a pivotal role in maintaining glycolysis–TCA cycle flux and ATP production under high-glucose conditions by suppressing PARP activity.
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Affiliation(s)
- Hideji Yako
- Diabetic Neuropathy Project, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo, 156-8506, Japan.
| | - Naoko Niimi
- Diabetic Neuropathy Project, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo, 156-8506, Japan
| | - Ayako Kato
- Laboratory of Medicine, Aichi Gakuin University, School of Pharmacy, Nagoya, Japan
| | - Shizuka Takaku
- Diabetic Neuropathy Project, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo, 156-8506, Japan
| | - Yasuaki Tatsumi
- Laboratory of Medicine, Aichi Gakuin University, School of Pharmacy, Nagoya, Japan
| | - Yasumasa Nishito
- Basic Technology Research Center, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Koichi Kato
- Laboratory of Medicine, Aichi Gakuin University, School of Pharmacy, Nagoya, Japan
| | - Kazunori Sango
- Diabetic Neuropathy Project, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo, 156-8506, Japan.
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Nishina S, Tomiyama Y, Ikuta K, Tatsumi Y, Toki Y, Kato A, Kato K, Yoshioka N, Sasaki K, Hara Y, Hino K. Long-term phlebotomy successfully alleviated hepatic iron accumulation in a ferroportin disease patient with a mutation in SLC40A1: a case report. BMC Gastroenterol 2021; 21:111. [PMID: 33673803 PMCID: PMC7934381 DOI: 10.1186/s12876-021-01674-z] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 02/17/2021] [Indexed: 02/08/2023] Open
Abstract
Background Hereditary hemochromatosis is a heterogenous group of inherited iron-overload conditions that is characterized by increased intestinal absorption and deposition in vital organs. Hepcidin is a soluble regulator that acts to attenuate both intestinal iron absorption and iron release from reticuloendothelial macrophages through internalization of ferroportin-1, an iron exporter. Ferroportin disease is hereditary hemochromatosis which is affected by SLC40A1, a gene coding ferroportin-1, and phenotypically classified into two forms (classical and nonclassical). In nonclassical form, ferroportin mutations are responsible for a gain of function with full iron export capability but insensitivity to downregulation by hepcidin. Here, we report a case of nonclassical ferroportin disease. Case presentation A 46-year-old Japanese man showed elevated serum iron (284 μg/dl), ferritin (1722 ng/ml), transferrin saturation ratio (91.3%), and hepcidin-25 level (139.6 ng/ml). Magnetic resonance imaging (MRI) demonstrated a marked reduction in the signal intensity of the liver in T1- and T2-weighted images. The liver histology exhibited a large amount of iron that had accumulated predominantly in hepatocytes. We identified a heterozygous 1520A > G (p.H507R) mutation in the SLC40A1 gene. Phlebotomy (400 ml at a time) was monthly performed for 3 years in this patient. Importantly, the serum hepcidin level (1.0 ng/ml) was normal when the serum ferritin level was normal and hepatic iron accumulation was remarkably reduced after 3 years of phlebotomy. Conclusions The present case demonstrated for the first time that there was a correlation between hepatic iron levels as measured by MRI and serum hepcidin levels through long-term phlebotomy in a patient with ferroportin disease with the p.H507R mutation of in SLC40A1.
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Affiliation(s)
- Sohji Nishina
- Department of Hepatology and Pancreatology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan
| | - Yasuyuki Tomiyama
- Department of Hepatology and Pancreatology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan
| | - Katsuya Ikuta
- Division of Gastroenterology and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, Asahikawa, Japan.,Japanese Red Cross Hokkaido Blood Center, Sapporo, Japan
| | - Yasuaki Tatsumi
- Laboratory of Medicine, School of Pharmacy, Aichi-Gakuin University, Nagoya, Japan
| | - Yasumichi Toki
- Division of Gastroenterology and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Ayako Kato
- Laboratory of Medicine, School of Pharmacy, Aichi-Gakuin University, Nagoya, Japan
| | - Koichi Kato
- Laboratory of Medicine, School of Pharmacy, Aichi-Gakuin University, Nagoya, Japan
| | - Naoko Yoshioka
- Department of Hepatology and Pancreatology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan
| | - Kyo Sasaki
- Department of Hepatology and Pancreatology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan
| | - Yuichi Hara
- Department of Hepatology and Pancreatology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan
| | - Keisuke Hino
- Department of Hepatology and Pancreatology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan.
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Matsuoka N, Hayashi M, Takahashi Y, Mochimaru T, Kumakawa H, Watanabe K, Tatsumi Y, Kato K, Ikuta K, Migita K, Ohira H. [A case of ferroportin disease with phenotype A gene mutation in SCL40A1 resembling phenotype B manifestation influenced by alcohol consumption]. Nihon Shokakibyo Gakkai Zasshi 2020; 117:1100-1108. [PMID: 33298676 DOI: 10.11405/nisshoshi.117.1100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
A 57-year-old man had been detected to have an elevated transaminase level. He had a history of alcohol consumption, and abdominal ultrasonography revealed an increase in the echogenicity of the liver;hence, he was diagnosed as having alcoholic liver disease. He restricted his alcohol intake, but the elevated transaminase level did not improve. Further medical examination was performed. He was found to have hyperferritinemia (serum ferritin, 6574ng/mL) and high transferrin saturation (TSAT, 90.5%). Computed tomography (CT) revealed high CT values of the liver and spleen (94 and 84HU, respectively). These findings differed from the characteristics of a typical alcoholic liver disease. Liver biopsy revealed iron deposition within the hepatocytes and Kupffer cells and liver fibrosis (F1-2). From the gene analysis of HFE, HJV, TFR2, HAMP, and SLC40A1 genes, he was heterozygous for the G>A (G490D) mutation in the ferroportin gene (SLC40A1). He was diagnosed as having ferroportin disease. It was reported that patients with a G490D mutation exhibited ferroportin disease A, which occurs owing to a loss-of-function mutation of SLC40A1. However, he was considered to have some characteristics of ferroportin disease B, which occurs owing to a gain-of-function mutation of SLC40A1. In this case, alcohol consumption might affect the progression of iron deposition in the liver. Therapeutic venesection was performed, and his hyperferritinemia with high TSAT gradually improved. In the course of the disease, other organ damages and progression of liver fibrosis did not occur.
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Affiliation(s)
- Naoki Matsuoka
- Department of Gastroenterology, Public Soma General Hospital.,Department of Gastroenterology, Fukushima Medical University School of Medicine.,Department of Rheumatology, Fukushima Medical University School of Medicine
| | - Manabu Hayashi
- Department of Gastroenterology, Fukushima Medical University School of Medicine
| | - Yuta Takahashi
- Department of Gastroenterology, Public Soma General Hospital
| | | | - Hiromi Kumakawa
- Department of Gastroenterology, Public Soma General Hospital
| | | | - Yasuaki Tatsumi
- Department of Medicine, Aichi-Gakuin University School of Pharmacy
| | - Koichi Kato
- Department of Medicine, Aichi-Gakuin University School of Pharmacy
| | - Katsuya Ikuta
- Division of Gastroenterology and Hematology/Oncology, Department of Medicine, Asahikawa Medical University.,Hokkaido Red Cross Blood Center
| | - Kiyoshi Migita
- Department of Rheumatology, Fukushima Medical University School of Medicine
| | - Hiromasa Ohira
- Department of Gastroenterology, Fukushima Medical University School of Medicine
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Kawaguchi T, Ikuta K, Tatsumi Y, Toki Y, Hayashi H, Tonan T, Ohtake T, Hoshino S, Naito M, Kato K, Okumura T, Torimura T. Identification of heterozygous p.Y150C and p.V274M mutations in the HJV gene in a Japanese patient with a mild phenotype of juvenile hemochromatosis: A case report. Hepatol Res 2020; 50:144-150. [PMID: 31472034 DOI: 10.1111/hepr.13423] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Revised: 08/07/2019] [Accepted: 08/20/2019] [Indexed: 12/08/2022]
Abstract
Juvenile hemochromatosis (JH) is known as a progressive iron-storage disease, and causes severe organ impairments, including cardiomyopathy and liver cirrhosis. However, JH is a rare genetic disorder, and information for genetic mutations and phenotypes is limited. Here, we report a case of JH with heterozygous p.Y150C and p.V274M mutations in the HJV gene. A 39-year-old Japanese man was referred to Kurume University Hospital, Kurume, Japan, for fatigue and liver injury, which first appeared at the age of 25 years. There was no history of alcohol abuse and medication, and viral hepatitis, autoimmune liver diseases, and Wilson's disease were absent. However, transferrin saturation, serum ferritin, and fasting serum hepcidin levels were 98.4%, 6421 ng/mL, and 7.4 ng/mL, respectively. Furthermore, a marked reduction in signal intensity of the liver in T1/T2-weighted magnetic resonance images was seen and the R2* maps showed hepatic iron overload. Family history of hemochromatosis and severe organ impairment, such as cardiac dysfunction and diabetes mellitus, were negative. In addition, the HFE and HAMP genes did not show any mutation. However, we identified novel heterozygous p.Y150C and p.V274M mutations in the HJV gene in the patient. The p.Y150C and p.V274M mutations were seen in his mother and father, respectively. After phlebotomy, fatigue disappeared and serum transaminase levels were normalized. Furthermore, R2* maps showed a reduction of hepatic iron concentration. We first demonstrated heterozygous p.Y150C and p.V274M mutations in the HJV gene of patients with a mild JH phenotype. Thus, genetic testing should be considered even in patients with a mild phenotype of hemochromatosis.
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Affiliation(s)
- Takumi Kawaguchi
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Katsuya Ikuta
- Division of Gastroenterology and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Yasuaki Tatsumi
- Laboratory of Medicine, Aichi-Gakuin University, School of Pharmacy, Nagoya, Japan
| | - Yasumichi Toki
- Division of Gastroenterology and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Hisao Hayashi
- Laboratory of Medicine, Aichi-Gakuin University, School of Pharmacy, Nagoya, Japan
| | - Tatsuyuki Tonan
- Department of Radiology, Kurume University School of Medicine, Kurume, Japan
| | - Takaaki Ohtake
- Department of Gastroenterology, International University of Health and Welfare Hospital, Nasushiobara, Japan
| | | | | | - Koichi Kato
- Laboratory of Medicine, Aichi-Gakuin University, School of Pharmacy, Nagoya, Japan
| | - Toshikatsu Okumura
- Division of Gastroenterology and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Takuji Torimura
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
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Hayashi H, Watanabe K, Inui A, Kato A, Tatsumi Y, Okumura A, Fujisawa T, Kato K. Alanine Aminotransferase as the First Test Parameter for Wilson's Disease. J Clin Transl Hepatol 2019; 7:293-296. [PMID: 31915597 PMCID: PMC6943216 DOI: 10.14218/jcth.2019.00042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 10/25/2019] [Accepted: 10/30/2019] [Indexed: 12/29/2022] Open
Abstract
Background and Aims: The liver is the first organ affected by toxic copper in the classical and severe hepatic forms of Wilson's disease (WD). Because their associated chronic liver damage is mostly asymptomatic, an intervention using a special test including serum alanine aminotransferase (ALT) activity is needed for detecting WD. Methods: Using the modified international criteria for the diagnosis of WD, 45 patients were selected from the collective databases of our institutions, and 7 infants were reviewed from the literature. Two patients had the severe hepatic form, with normoceruloplasminemia and no mutations in ATP7B. The rapid ALT change during hemolytic anemia was adjusted for a baseline. The diagnostic potential of the ALT test was assessed from the age-dependent natural course of the liver damage of WD. Results: The natural course had three stages. ALTs were still low in some infants younger than 4 years-old. They were high in all children between the ages of 4 and 8 years-old; then, they reduced to low levels in some patients over 9 years of age. The high ALT stage represents chronic active hepatitis, and the subsequent low ALT stage is due to silent cirrhosis. The hepatic copper content is a reliable but invasive test, while urinary copper secretion is an alternative, non-invasive test for copper toxicosis of WD. The serum ceruloplasmin and ATP7B analyses are subtype tests of WD. The response to anti-copper regimens is the final test result. Conclusions: ALT could be the first parameter to test to detect WD in children between the ages of 4 and 8 years.
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Affiliation(s)
- Hisao Hayashi
- Department of Medicine, Aichi Gakuin University School of Pharmacy, Chikusa-ku, Nagoya, Japan
- Correspondence to: Hisao Hayashi, Department of Medicine, Aichi Gakuin University School of Pharmacy, 1–100 Kusumoto-cho, Chikusa-ku, Nagoya 464-8650, Japan. Tel: +81-52-757-6779, E-mail:
| | | | - Ayano Inui
- Department of Pediatric Gastroenterology and Hepatology, Saiseikai Yokohama Toub Hospital, Yokohama, Kanagawa, Japan
| | - Ayako Kato
- Department of Medicine, Aichi Gakuin University School of Pharmacy, Chikusa-ku, Nagoya, Japan
| | - Yasuaki Tatsumi
- Department of Medicine, Aichi Gakuin University School of Pharmacy, Chikusa-ku, Nagoya, Japan
| | - Akihiko Okumura
- Department of Gastroenterology, Kainan Hospital, Yatomi, Japan
| | - Tomoo Fujisawa
- Department of Pediatric Gastroenterology and Hepatology, Saiseikai Yokohama Toub Hospital, Yokohama, Kanagawa, Japan
| | - Koichi Kato
- Department of Medicine, Aichi Gakuin University School of Pharmacy, Chikusa-ku, Nagoya, Japan
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Tatsumi Y, Kato A, Sango K, Himeno T, Kondo M, Kato Y, Kamiya H, Nakamura J, Kato K. Omega-3 polyunsaturated fatty acids exert anti-oxidant effects through the nuclear factor (erythroid-derived 2)-related factor 2 pathway in immortalized mouse Schwann cells. J Diabetes Investig 2019; 10:602-612. [PMID: 30216708 PMCID: PMC6497605 DOI: 10.1111/jdi.12931] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 08/09/2018] [Accepted: 09/09/2018] [Indexed: 12/14/2022] Open
Abstract
AIMS/INTRODUCTION Recent studies advocate that omega-3 polyunsaturated fatty acids (ω-3 PUFAs) have direct anti-oxidative and anti-inflammatory effects in the vasculature; however, the role of ω-3 PUFAs in Schwann cells remains undetermined. MATERIALS AND METHODS Immortalized mouse Schwann (IMS32) cells were incubated with the ω-3 PUFAs docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA). The messenger ribonucleic acid levels of several anti-oxidant enzymes (heme oxygenase-1 [Ho-1], nicotinamide adenine dinucleotide [phosphate] H quinone oxidoreductase 1, catalase, superoxide dismutase and glutathione peroxidase) were identified using real-time reverse transcription polymerase chain reaction. Ho-1 and nicotinamide adenine dinucleotide [phosphate] H quinone oxidoreductase 1 protein levels were evaluated using Western blotting. Nuclear factor (erythroid-derived 2)-related factor 2 (Nrf2) of the nuclear fraction was also quantified using western blotting. Catalase activity and glutathione content were determined by colorimetric assay kits. Nrf2 promoter-luciferase activity was evaluated by a dual luciferase assay system. RESULTS Treatment with tert-butyl hydroperoxide decreased cell viability dose-dependently. DHA or EPA pretreatment significantly alleviated tert-butyl hydroperoxide-induced cytotoxicity. DHA or EPA increased the messenger ribonucleic acid levels of Ho-1, nicotinamide adenine dinucleotide (phosphate) H quinone oxidoreductase 1 and catalase dose-dependently. Ho-1 protein level, catalase activity, Nrf2 promoter-luciferase activity and intracellular glutathione content were significantly increased by DHA and EPA. CONCLUSIONS These findings show that DHA and EPA can induce Ho-1 and catalase through Nrf2, thus protecting Schwann cells against oxidative stress. ω-3 PUFAs appear to exert their neuroprotective effect by increasing defense mechanisms against oxidative stress in diabetic neuropathies.
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Affiliation(s)
- Yasuaki Tatsumi
- Laboratory of MedicineAichi Gakuin University School of PharmacyNagoyaAichiJapan
| | - Ayako Kato
- Laboratory of MedicineAichi Gakuin University School of PharmacyNagoyaAichiJapan
| | - Kazunori Sango
- Diabetic Neuropathy ProjectDepartment of Sensory and Motor SystemsTokyo Metropolitan Institute of Medical ScienceTokyoJapan
| | - Tatsuhito Himeno
- Department of Internal MedicineDivision of DiabetesAichi Medical University School of MedicineNagakuteAichiJapan
| | - Masaki Kondo
- Department of Internal MedicineDivision of DiabetesAichi Medical University School of MedicineNagakuteAichiJapan
| | - Yoshiro Kato
- Department of Internal MedicineDivision of DiabetesAichi Medical University School of MedicineNagakuteAichiJapan
| | - Hideki Kamiya
- Department of Internal MedicineDivision of DiabetesAichi Medical University School of MedicineNagakuteAichiJapan
| | - Jiro Nakamura
- Department of Internal MedicineDivision of DiabetesAichi Medical University School of MedicineNagakuteAichiJapan
| | - Koichi Kato
- Laboratory of MedicineAichi Gakuin University School of PharmacyNagoyaAichiJapan
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Kato A, Tatsumi Y, Yako H, Sango K, Himeno T, Kondo M, Kato Y, Kamiya H, Nakamura J, Kato K. Recurrent short-term hypoglycemia and hyperglycemia induce apoptosis and oxidative stress via the ER stress response in immortalized adult mouse Schwann (IMS32) cells. Neurosci Res 2018; 147:26-32. [PMID: 30444976 DOI: 10.1016/j.neures.2018.11.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [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: 08/29/2018] [Revised: 10/02/2018] [Accepted: 11/12/2018] [Indexed: 12/21/2022]
Abstract
Hypoglycemia and fluctuating high or low glucose conditions are under-appreciated sources of oxidative stress contributing to diabetic neuropathy. We investigated the effects of recurrent short-term hypoglycemia and hyperglycemia, on apoptosis and oxidative stress in Schwann cells. Immortalized adult mouse Schwann (IMS32) cells were exposed to five different glucose treatments over 3 days: 1) normal glucose (NG), 2) constant low glucose (LG), 3) constant high glucose (HG), 4) intermittent low glucose (ILG; 1 h three times per day), 5) intermittent high glucose (IHG; 1 h three times per day). Cell viability was decreased by all treatment variants, in comparison to NG. Thiobarbituric acid reactive substance (TBARS) levels were increased by HG, LG, IHG, and ILG. High glucose (HG and IHG) and low glucose (LG and ILG) increased the expression of cleaved caspase-3 and reduced that of Bcl-2. In addition, endoplasmic reticulum (ER) stress-responsive transcription factor C/EBP homologous protein (CHOP) expression was increased under low and high glucose conditions. Cell death and oxidative stress induced by HG, LG, IHG, and ILG were significantly reduced by 4-phenyl butyric acid (4-PBA), an ER stress inhibitor. These findings indicate that recurrent short-term hypoglycemia and hyperglycemia induce apoptosis and oxidative stress via the ER stress response in Schwann cells.
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Affiliation(s)
- Ayako Kato
- Laboratory of Medicine, Aichi Gakuin University School of Pharmacy, Chikusa-ku, Nagoya, Aichi, 464-8650, Japan
| | - Yasuaki Tatsumi
- Laboratory of Medicine, Aichi Gakuin University School of Pharmacy, Chikusa-ku, Nagoya, Aichi, 464-8650, Japan
| | - Hideji Yako
- Diabetic Neuropathy Project, Department of Sensory and Motor Systems, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, 156-8506 Japan
| | - Kazunori Sango
- Diabetic Neuropathy Project, Department of Sensory and Motor Systems, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, 156-8506 Japan
| | - Tatsuhito Himeno
- Division of Diabetes, Department of Internal Medicine, Aichi Medical University School of Medicine, Nagakute, Aichi, 480-1195, Japan
| | - Masaki Kondo
- Division of Diabetes, Department of Internal Medicine, Aichi Medical University School of Medicine, Nagakute, Aichi, 480-1195, Japan
| | - Yoshiro Kato
- Division of Diabetes, Department of Internal Medicine, Aichi Medical University School of Medicine, Nagakute, Aichi, 480-1195, Japan
| | - Hideki Kamiya
- Division of Diabetes, Department of Internal Medicine, Aichi Medical University School of Medicine, Nagakute, Aichi, 480-1195, Japan
| | - Jiro Nakamura
- Division of Diabetes, Department of Internal Medicine, Aichi Medical University School of Medicine, Nagakute, Aichi, 480-1195, Japan
| | - Koichi Kato
- Laboratory of Medicine, Aichi Gakuin University School of Pharmacy, Chikusa-ku, Nagoya, Aichi, 464-8650, Japan.
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Hayashi H, Yano M, Urawa N, Mizutani A, Hamaoka S, Araki J, Kojima Y, Naito Y, Kato A, Tatsumi Y, Kato K. A 10-year Follow-up Study of a Japanese Family with Ferroportin Disease A: Mild Iron Overload with Mild Hyperferritinemia Co-occurring with Hyperhepcidinemia May Be Benign. Intern Med 2018; 57:2865-2871. [PMID: 29780118 PMCID: PMC6207810 DOI: 10.2169/internalmedicine.0481-17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
This is a 10-year follow-up study of a family with ferroportin disease A. The proband, a 59-year-old man showed no noteworthy findings with the exception of an abnormal iron level. The proband's 90-year-old father showed reduced abilities in gait and cognition; however, with the exception of his iron level, his biochemistry results were almost normal. Brain imaging showed age-matched atrophy and iron deposition. In both patients, the serum levels of ferritin and hepcidin25, and liver computed tomography scores declined over a 10-year period. These changes were mainly due to a habitual change to a low-iron diet. The iron disorder in this family was not associated with major organ damage.
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Affiliation(s)
- Hisao Hayashi
- Department of Medicine, Aichi-Gakuin University School of Pharmacy, Japan
| | - Motoyoshi Yano
- Department of Gastroenterology, Yokkaichi Municipal Hospital, Japan
| | - Naohito Urawa
- Department of Hepatology, Ise Red Cross Hospital, Japan
| | | | - Shima Hamaoka
- Department of Hepatology, Ise Red Cross Hospital, Japan
| | - Jun Araki
- Department of Hepatology, Ise Red Cross Hospital, Japan
| | - Yuji Kojima
- Department of Hepatology, Ise Red Cross Hospital, Japan
| | - Yutaka Naito
- Department of Neurology, Ise Red Cross Hospital, Japan
| | - Ayako Kato
- Department of Medicine, Aichi-Gakuin University School of Pharmacy, Japan
| | - Yasuaki Tatsumi
- Department of Medicine, Aichi-Gakuin University School of Pharmacy, Japan
| | - Koichi Kato
- Department of Medicine, Aichi-Gakuin University School of Pharmacy, Japan
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Tatsumi Y, Kato A, Kato K, Hayashi H. The interactions between iron and copper in genetic iron overload syndromes and primary copper toxicoses in Japan. Hepatol Res 2018; 48:679-691. [PMID: 29882374 DOI: 10.1111/hepr.13200] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 05/13/2018] [Accepted: 05/24/2018] [Indexed: 02/08/2023]
Abstract
Iron and copper are trace elements essential for health, and iron metabolism is tightly regulated by cuproproteins. Clarification of the interactions between iron and copper may provide a better understanding of the pathophysiology and treatment strategy for hemochromatosis, Wilson disease, and related disorders. The hepcidin/ferroportin system was used to classify genetic iron overload syndromes in Japan, and ceruloplasmin and ATP7B were introduced for subtyping Wilson disease into the severe hepatic and classical forms. Interactions between iron and copper were reviewed in these genetic diseases. Iron overload syndromes were classified into pre-hepatic iron loading anemia and aceruloplasminemia, hepatic hemochromatosis, and post-hepatic ferroportin disease. The ATP7B-classical form with hypoceruloplasminemia has primary hepatopathy and late extra-hepatic complications, while the severe hepatic form is free from ATP7B mutation and hypoceruloplasminemia, and silently progresses to liver failure. A large amount of iron and trace copper co-exist in hepatocellular dense bodies of all iron overload syndromes. Cuproprotein induction to stabilize excess iron should be differentiated from copper retention in Wilson disease. The classical form of Wilson disease associated with suppressed hepacidin25 secretion may be double-loaded with copper and iron, and transformed to an iron disease after long-term copper chelation. Iron disease may not be complicated with the severe hepatic form with normal ferroxidase activity. Hepatocellular dense bodies of iron overload syndromes may be loaded with a large amount of iron and trace copper, while the classical Wilson disease may be double-loaded with copper and iron.
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Affiliation(s)
- Yasuaki Tatsumi
- Department of Medicine, Aichi-Gakuin University, School of Pharmacy, Nagoya, Japan
| | - Ayako Kato
- Department of Medicine, Aichi-Gakuin University, School of Pharmacy, Nagoya, Japan
| | - Koichi Kato
- Department of Medicine, Aichi-Gakuin University, School of Pharmacy, Nagoya, Japan
| | - Hisao Hayashi
- Department of Medicine, Aichi-Gakuin University, School of Pharmacy, Nagoya, Japan
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Ukon S, Watanabe S, Tatsumi Y, Yoshikawa H, Takashima H. Optic nerve pathology of a transgenic mouse expressing novel mutant mitofusin 2 protein. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3509] [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: 10/18/2022]
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Godai K, Miyamatsu N, Higashiyama A, Kubo S, Nishida Y, Sugiyama D, Nii Y, Tatsumi Y, Nishikawa T, Okamura T. PO3-2ALCOHOL CONSUMPTION AND PSYCHOLOGICAL DISTRESS IN HEALTHY JAPANESE RESIDENTS: THE KOBE STUDY. Alcohol Alcohol 2017. [DOI: 10.1093/alcalc/agx074.31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Kostakoglu L, Martelli M, Belada D, Carella A, Chua N, Gonzalez-Barca E, Hong X, Pinto A, Sehn L, Shi Y, Tatsumi Y, Fingerle-Rowson G, Mattiello F, Nielsen T, Sahin D, Vitolo U, Trněný M. END OF TREATMENT PET-CT PREDICTS PROGRESSION-FREE SURVIVAL IN DLBCL AFTER FIRST-LINE TREATMENT: RESULTS FROM THE PHASE III GOYA STUDY. Hematol Oncol 2017. [DOI: 10.1002/hon.2438_45] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- L. Kostakoglu
- Department of Radiology; Icahn School of Medicine at Mount Sinai; New York USA
| | - M. Martelli
- Department of Cellular Biotechnologies and Hematology; Sapienza University; Rome Italy
| | - D. Belada
- 4th Department of Internal Medicine-Hematology; University Hospital Hradec Kralove, and Charles University in Prague, Faculty of Medicine in Hradec Kralove; Hradec Kralove Czech Republic
| | - A.M. Carella
- U.O. Hematology I; IRCCS AO University, San Martino-IST; Genoa Italy
| | - N. Chua
- Cross Cancer Institute; University of Alberta; Edmonton Canada
| | - E. Gonzalez-Barca
- Institut Catalá d'Oncologia Hospitalet, IDIBELL; University of Barcelona; Barcelona Spain
| | - X. Hong
- Department of Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - A. Pinto
- Istituto Nazionale Tumori, Fondazione G. Pascale; IRCCS; Naples Italy
| | - L.H. Sehn
- Centre for Lymphoid Cancer; British Columbia Cancer Agency and the University of British Columbia; Vancouver Canada
| | - Y. Shi
- National Cancer Center, Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing Key Laboratory of Clinical Study on Anticancer Molecular Targeted Drugs; Beijing China
| | - Y. Tatsumi
- Department of Hematology and Rheumatology, Faculty of Medicine; Kinki University Hospital; Osaka Japan
| | - G. Fingerle-Rowson
- Pharma Development Clinical Oncology; F. Hoffmann-La Roche Ltd; Basel Switzerland
| | - F. Mattiello
- Pharma Development Biometrics Biostatistics; F. Hoffmann-La Roche Ltd; Basel Switzerland
| | - T. Nielsen
- Pharma Development Clinical Oncology; F. Hoffmann-La Roche Ltd; Basel Switzerland
| | - D. Sahin
- Department of Hematology and Rheumatology, Faculty of Medicine; Kinki University Hospital; Osaka Japan
| | - U. Vitolo
- Department of Hematology; Azienda Ospedaliera Universitaria Città della Salute e della Scienza di Torino; Turin Italy
| | - M. Trněný
- Department of Medicine-Department of Hematology; Charles University; Prague Czech Republic
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Yahata S, Yung S, Mandai M, Nagahara T, Kuzume D, Sakaeda H, Wakusawa S, Kato A, Tatsumi Y, Kato K, Hayashi H, Isaji R, Sasaki Y, Yano M, Hayashi K, Ishigami M, Goto H. Phenotypes and Chronic Organ Damage May Be Different among Siblings with Wilson's Disease. J Clin Transl Hepatol 2017; 5:27-30. [PMID: 28507923 PMCID: PMC5411353 DOI: 10.14218/jcth.2016.00064] [Citation(s) in RCA: 5] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 01/29/2017] [Accepted: 02/01/2017] [Indexed: 12/15/2022] Open
Abstract
Background and Aims: Cloning of ATP7B provided evidence that Wilson's disease is a hepatic copper toxicosis with a variety of extrahepatic complications. Affected siblings with the same genetic background and exposure to similar environmental factors may be a good model for the study of genotype-phenotype correlation. Methods: Twenty-three affected siblings in 11 families were selected from a database. The first phenotypes were determined according to the international proposal. The final types of chronic organ damage were re-evaluated for life-long management. Results: Phenotypes were identical in 5 of the families and different in 6 of the families. The acute hepatic phenotype H1 was found in 3 younger siblings and 1 older sibling. All survived an acute episode of hemolysis with underlying chronic liver disease. One also presented complication with neurological disease. The neurological phenotype N1 with neuropsychiatric symptoms and hepatic disease was found in 2 aged siblings of 1 family, in an older sibling in 3 families and in the oldest sibling in 1 family. Phenotypes in siblings were mainly split by either H1 occurring in random order or age-dependent N1. Types of chronic organ damage were identical in 8 of the families and different in 3 of the families. The same combination of chronic liver disease was found in 6 families and chronic liver disease complicated with neurological disease in 2 families. Split organ damage in siblings was found when an older sibling was complicated by neurological disease. There was no reverse combination of a younger sibling being complicated by neurological disease in any of the families. Conclusion: Phenotype combinations of siblings were mainly modified by externally-induced hemolytic episodes, while chronic organ damage in siblings was split by age-dependent neurological complications.
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Affiliation(s)
- Shinsuke Yahata
- Department of Gastroenterology, Hyogo Prefectural Kakogawa Medical Center, Kakogawa, Hyogo, Japan
| | - Seitetsu Yung
- Department of Gastroenterology, Hyogo Prefectural Kakogawa Medical Center, Kakogawa, Hyogo, Japan
| | - Mari Mandai
- Department of Gastroenterology and Hepatology, Tottori Prefectural Kousei Hospital, Kurayoshi, Tottori, Japan
| | - Takakazu Nagahara
- Department of Gastroenterology and Hepatology, Tottori Prefectural Kousei Hospital, Kurayoshi, Tottori, Japan
| | - Daisaku Kuzume
- Departments of Neurology and Gastroenterology, Chikamori Hospital, Kochi, Japan
| | - Hiroshi Sakaeda
- Departments of Neurology and Gastroenterology, Chikamori Hospital, Kochi, Japan
| | - Shinya Wakusawa
- Medical Laboratory Sciences, Nagoya University Graduate School of Medicine, Higashi-ku, Nagoya, Japan
| | - Ayako Kato
- Department of Medicine, Aichi Gakuin University School of Pharmacy, Chikusa-ku, Nagoya, Japan
| | - Yasuaki Tatsumi
- Department of Medicine, Aichi Gakuin University School of Pharmacy, Chikusa-ku, Nagoya, Japan
| | - Koichi Kato
- Department of Medicine, Aichi Gakuin University School of Pharmacy, Chikusa-ku, Nagoya, Japan
| | - Hisao Hayashi
- Department of Medicine, Aichi Gakuin University School of Pharmacy, Chikusa-ku, Nagoya, Japan
- *Correspondence to: Hisao Hayashi, Department of Medicine, Aichi Gakuin University School of Pharmacy, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya 464-8650, Japan. Tel: +81-52-757-6779, Fax: +81-52-757-6799, E-mail:
| | - Ryohei Isaji
- Department of Gastroenterology, Konan Kosei Hospital, Takaya-cho, Konan, Aichi, Japan
| | - Yoji Sasaki
- Department of Gastroenterology, Konan Kosei Hospital, Takaya-cho, Konan, Aichi, Japan
| | - Motoyoshi Yano
- Department of Gastroenterology, Yokkaichi Municipal Hospital, Yokkaichi, Mie, Japan
| | - Kazuhiko Hayashi
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan
| | - Masatoshi Ishigami
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan
| | - Hidemi Goto
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan
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Yokoyama K, Tatsumi Y, Hayashi K, Goto H, Ishikawa T, Wakusawa S. Effects of Ursodeoxycholic Acid and Insulin on Palmitate-Induced ROS Production and Down-Regulation of PI3K/Akt Signaling Activity. Biol Pharm Bull 2017; 40:2001-2004. [DOI: 10.1248/bpb.b17-00423] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Kunihiro Yokoyama
- Division of Medical Laboratory Sciences, Department of Radiological and Medical Laboratory Sciences, Nagoya University Graduate School of Medicine
| | - Yasuaki Tatsumi
- Department of Pharmacotherapeutics, Aichi Gakuin University School of Pharmacy
| | - Kazuhiko Hayashi
- Division of Gastroenterology, Department of Internal Medicine, Nagoya University Graduate School of Medicine
| | - Hidemi Goto
- Division of Gastroenterology, Department of Internal Medicine, Nagoya University Graduate School of Medicine
| | - Tetsuya Ishikawa
- Division of Medical Laboratory Sciences, Department of Radiological and Medical Laboratory Sciences, Nagoya University Graduate School of Medicine
| | - Shinya Wakusawa
- Division of Medical Laboratory Sciences, Department of Radiological and Medical Laboratory Sciences, Nagoya University Graduate School of Medicine
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Yoshida K, Hayashi H, Wakusawa S, Shigemasa R, Koide R, Ishikawa T, Tatsumi Y, Kato K, Ohara S, Ikeda SI. Coexistence of Copper in the Iron-Rich Particles of Aceruloplasminemia Brain. Biol Trace Elem Res 2017; 175:79-86. [PMID: 27272717 DOI: 10.1007/s12011-016-0744-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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: 02/22/2016] [Accepted: 05/11/2016] [Indexed: 12/14/2022]
Abstract
The interaction between iron and copper has been discussed in association with human health and diseases for many years. Ceruloplasmin, a multi-copper oxidase, is mainly involved in iron metabolism and its genetic defect, aceruloplasminemia (ACP), shows neurological disorders and diabetes associated with excessive iron accumulation, but little is known about the state of copper in the brain. Here, we investigated localization of these metals in the brains of three patients with ACP using electron microscopes equipped with an energy-dispersive x-ray analyzer. Histochemically, iron deposition was observed mainly in the basal ganglia and dentate nucleus, and to lesser degree in the cerebral cortex of the patients, whereas copper grains were not detected. X-ray microanalysis identified two types of iron-rich particles in their brains: dense bodies, namely hemosiderins, and their aggregated inclusions. A small number of hemosiderins and most inclusions contained a significant amount of copper which was enough for distinct Cu x-ray images. These copper-containing particles were observed more frequently in the putamen and dentate nucleus than the cerebral cortex. Coexistence of iron and copper was supported by good correlations in the molecular ratios between these two metals in iron-rich particles with Cu x-ray image. Iron-dependent copper accumulation in iron-rich particles may suggest that copper recycling is enhanced to meet the increased requirement of cuproproteins in iron overload brain. In conclusion, the iron-rich particles with Cu x-ray image were found in the ACP brain.
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Affiliation(s)
- Kunihiro Yoshida
- Department of Brain Disease Research, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, 390-8621, Japan.
- Department of Medicine (Neurology and Rheumatology), Shinshu University School of Medicine, Matsumoto, Japan.
| | - Hisao Hayashi
- Department of Medicine, Aichi Gakuin University School of Pharmacy, Nagoya, Japan
| | - Shinya Wakusawa
- Department of Medical Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Ryota Shigemasa
- Department of Medical Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Ryoji Koide
- Department of Medical Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tetsuya Ishikawa
- Department of Medical Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yasuaki Tatsumi
- Department of Medicine, Aichi Gakuin University School of Pharmacy, Nagoya, Japan
| | - Koichi Kato
- Department of Medicine, Aichi Gakuin University School of Pharmacy, Nagoya, Japan
| | - Shinji Ohara
- Department of Neurology, Matsumoto Medical Center, Matsumoto, Japan
| | - Shu-Ichi Ikeda
- Department of Medicine (Neurology and Rheumatology), Shinshu University School of Medicine, Matsumoto, Japan
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21
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Tatsumi J, Tatsumi Y, Tatsumi N, Nagasawa T. Influences of red cell deformability on trapped plasma volume. Clin Hemorheol Microcirc 2016. [DOI: 10.3233/ch-1984-4604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- J. Tatsumi
- Osaka City University Medical School, Department of Laboratory Medicine, Abeno, Osaka, Japan
| | - Y. Tatsumi
- Osaka City University Medical School, Department of Laboratory Medicine, Abeno, Osaka, Japan
| | - N. Tatsumi
- Osaka City University Medical School, Department of Laboratory Medicine, Abeno, Osaka, Japan
| | - T. Nagasawa
- Osaka City University Medical School, Department of Physiology, Abeno, Osaka, Japan
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22
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Ikuta K, Hatayama M, Addo L, Toki Y, Sasaki K, Tatsumi Y, Hattori A, Kato A, Kato K, Hayashi H, Suzuki T, Kobune M, Tsutsui M, Gotoh A, Aota Y, Matsuura M, Hamada Y, Tokuda T, Komatsu N, Kohgo Y. Iron overload patients with unknown etiology from national survey in Japan. Int J Hematol 2016; 105:353-360. [DOI: 10.1007/s12185-016-2141-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Revised: 11/06/2016] [Accepted: 11/06/2016] [Indexed: 12/21/2022]
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23
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Fujii T, Tatsumi Y, Konishi N. microRNA-331-3p inhibits cell proliferation and E7 expression by targeting NRP2 in cervical cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw362.22] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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24
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Fujii T, Shimada K, Tatsumi Y, Tanaka N, Fujimoto K, Konishi N. Syndecan-1 up-regulates microRNA-331-3p and mediates epithelial-to-mesenchymal transition in prostate cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw393.22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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25
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Fujii T, Tatsumi Y, Fujimoto K, Konishi N. microRNA-145 promotes differentiation in human urothelial carcinoma through down-regulation of syndecan-1. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw362.19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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26
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Abstract
Raman spectroscopy of transition metal dichalcogenides (TMDs) is reviewed based on our recent theoretical and experimental works. First, we discuss the semi-classical and quantum mechanical description for the polarization dependence of Raman spectra of TMDs in which the optical dipole transition matrix elements as a function of laser excitation energy are important for understanding the polarization dependence of the Raman intensity and Raman tensor. Overviewing the symmetry of TMDs, we discuss the dependence of the Raman spectra of TMDs on layer thickness, polarization, laser energy and the structural phase. Furthermore, we discuss the Raman spectra of twisted bilayer and heterostructures of TMDs. Finally, we give our perspectives on the Raman spectroscopy of TMDs.
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Affiliation(s)
- R Saito
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
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27
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Imashuku S, Muramatsu H, Sugihara T, Okuno Y, Wang X, Yoshida K, Kato A, Kato K, Tatsumi Y, Hattori A, Kita S, Oe K, Sueyoshi A, Usui T, Shiraishi Y, Chiba K, Tanaka H, Miyano S, Ogawa S, Kojima S, Kanno H. PIEZO1 gene mutation in a Japanese family with hereditary high phosphatidylcholine hemolytic anemia and hemochromatosis-induced diabetes mellitus. Int J Hematol 2016; 104:125-9. [PMID: 26971963 DOI: 10.1007/s12185-016-1970-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 03/01/2016] [Accepted: 03/02/2016] [Indexed: 12/26/2022]
Abstract
Hereditary xerocytosis (HX) or dehydrated hereditary stomatocytosis (DHS) [OMIM 194380], in which PIEZO1 gene mutation has recently been identified, is difficult to diagnose. We report here the discovery of a PIEZO1 gene mutation in a Japanese family (father, daughter, and son) who were previously diagnosed with hereditary high phosphatidylcholine hemolytic anemia (HPCHA). All of the affected family members had non-spherocytic hemolytic anemia associated with severe hemochromatosis-related diabetes mellitus. Although the causative correlation between HPCHA and PIEZO1-gene mutated HX/DHS remains to be clarified, our findings raise an important question as to whether any of the HPCHA cases previously diagnosed in Japan may have in fact been the form of hemolytic anemia known as HX/DHS with PIEZO1 gene mutation.
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Affiliation(s)
- Shinsaku Imashuku
- Divisions of Laboratory Medicine or Internal Medicine, Uji-Tokushukai Medical Center, Uji-Tokushukai Medical Center, 145 Ishibashi, Makishima-cho, Uji, Kyoto, 611-0041, Japan.
| | - Hideki Muramatsu
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takashi Sugihara
- Department of Hematology, Kawasaki Medical School, Kurashiki, Japan
| | - Yusuke Okuno
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, Nagoya, Japan
| | - Xinan Wang
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kenichi Yoshida
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ayako Kato
- Laboratory of Medicine, Aichi Gakuin University School of Pharmacy, Nagoya, Japan
| | - Koichi Kato
- Laboratory of Medicine, Aichi Gakuin University School of Pharmacy, Nagoya, Japan
| | - Yasuaki Tatsumi
- Laboratory of Medicine, Aichi Gakuin University School of Pharmacy, Nagoya, Japan
| | - Ai Hattori
- Department of Hospital Pharmacy, Nagoya University, Nagoya, Japan
| | - Shinya Kita
- Divisions of Laboratory Medicine or Internal Medicine, Uji-Tokushukai Medical Center, Uji-Tokushukai Medical Center, 145 Ishibashi, Makishima-cho, Uji, Kyoto, 611-0041, Japan
| | - Keishi Oe
- Divisions of Laboratory Medicine or Internal Medicine, Uji-Tokushukai Medical Center, Uji-Tokushukai Medical Center, 145 Ishibashi, Makishima-cho, Uji, Kyoto, 611-0041, Japan
| | - Atsushi Sueyoshi
- Divisions of Laboratory Medicine or Internal Medicine, Uji-Tokushukai Medical Center, Uji-Tokushukai Medical Center, 145 Ishibashi, Makishima-cho, Uji, Kyoto, 611-0041, Japan
| | - Takeshi Usui
- Clinical Research Institute, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - Yuichi Shiraishi
- Laboratory of DNA Information Analysis, Human Genome Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Kenichi Chiba
- Laboratory of DNA Information Analysis, Human Genome Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Hiroko Tanaka
- Laboratory of Sequence Analysis, Human Genome Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Satoru Miyano
- Laboratory of DNA Information Analysis, Human Genome Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan.,Laboratory of Sequence Analysis, Human Genome Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan.,Health Intelligence Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Seishi Ogawa
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Seiji Kojima
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hitoshi Kanno
- Department of Transfusion Medicine and Cell Processing, Tokyo Women's Medical University, Tokyo, Japan
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28
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Hayashi H, Tatsumi Y, Yahata S, Hayashi H, Momose K, Isaji R, Sasaki Y, Hayashi K, Wakusawa S, Goto H. Acute Hepatic Phenotype of Wilson Disease: Clinical Features of Acute Episodes and Chronic Lesions Remaining in Survivors. J Clin Transl Hepatol 2015; 3:239-45. [PMID: 26807378 PMCID: PMC4721890 DOI: 10.14218/jcth.2015.00032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 11/27/2015] [Accepted: 11/29/2015] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND AND AIMS Wilson disease (WD) is an inherited disorder of copper metabolism, and an international group for the study of WD (IGSW) has proposed three phenotypes for its initial presentation: acute hepatic, chronic hepatic, and neurologic phenotypes. Characterization of the acute hepatic phenotype may improve our understanding of the disease. METHODS Clinical features of 10 WD patients with the acute hepatic phenotype and characteristics of chronic lesions remaining in survivors were assessed by the European Association for the Study of the Liver (EASL) guidelines. RESULTS All six patients younger than 30 years had survived an acute episode of hemolytic anemia with residual liver disease of cirrhosis or chronic hepatitis. The acute episode was self-limiting in two of the four patients over the age of 30 years and progressed to acute liver failure in the other two patients. One of the two survivors had residual liver disease of chronic hepatitis, while the other had chronic hepatitis and neurologic disease. Neurologic disease remained in a patient who successfully received a liver transplantation. During acute episodes, serum levels of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) changed rapidly along with anemia. Liver-specific ALT levels were age-dependently correlated with hemoglobin (Hb) concentrations. Enzyme reduction was milder for AST than ALT, which resulted in a high AST/ALT ratio in the anemic stage. The anemic stage in two patients transformed to acute liver failure. CONCLUSIONS All survivors of an acute episode of the acute hepatic phenotype had residual liver disease or both liver and neurologic diseases. The rapid changes in liver enzymes during the acute episode and the liver and neurologic diseases remaining in survivors may provide a better understanding of WD.
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Affiliation(s)
- Hisao Hayashi
- Department of Medicine, Aichi-Gakuin University School of Pharmacy, Nagoya, Japan
| | - Yasuaki Tatsumi
- Department of Medicine, Aichi-Gakuin University School of Pharmacy, Nagoya, Japan
| | - Shinsuke Yahata
- Department of Gastroenterology, Hyogo Prefectural Kakogawa Medical Center, Kakogawa, Japan
| | - Hiroki Hayashi
- Department of Gastroenterology, Kita-Harima Medical Center, Ono, Japan
| | - Kenji Momose
- Department of Gastroenterology, Kobe University School of Medicine, Kobe, Japan
| | - Ryohei Isaji
- Department of Gastroenterology, Konan Kosei Hospital, Konan, Japan
| | - Youji Sasaki
- Department of Gastroenterology, Konan Kosei Hospital, Konan, Japan
| | - Kazuhiko Hayashi
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shinya Wakusawa
- Department of Medical Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
- Correspondence to: Shinya Wakusawa, Department of Medical Laboratory Sciences, Nagoya University Graduate School of Medicine, 1-1-20 Daiko-minami, Higashi-ku, Nagoya 461-8673, Japan. Tel: +81-719-1558, Fax: +81-719-1558, E-mail:
| | - Hidemi Goto
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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29
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Nishikawa T, Okamura T, Shima A, Kawatsu Y, Sugiyama D, Kadota A, Morimoto A, Tatsumi Y, Godai K, Miyamatsu N. Casual serum triglyceride as a predictor of premature type 2 diabetes mellitus: an 8-year cohort study of middle-aged Japanese workers. Diabetol Int 2015; 7:252-258. [PMID: 30603271 DOI: 10.1007/s13340-015-0241-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 07/24/2015] [Accepted: 09/23/2015] [Indexed: 12/22/2022]
Abstract
Background The utility of casual serum triglyceride (TG) as a predictor of type 2 diabetes mellitus (DM) is unclear, especially during the most productive years. Methods Participants were 3271 workers (913 men and 2358 women, age 20-57) without DM at baseline. They underwent consecutive annual medical check-ups for 8 years. The association between newly diagnosed DM and casual serum TG level was determined by classifying the participants into 4 groups according to casual serum TG level at baseline: below 50 mg/dL (group A), 50-100 mg/dL (group B), 100-150 mg/dL (group C), and ≥150 mg/dL (group D). The effects of casual serum TG level in combination with sex, obesity, or serum glucose level on newly diagnosed DM were also evaluated. Results A total of 222 newly diagnosed type 2 DM cases with a mean age of 50 years old were observed during the follow-up period, i.e., 10/406 in group A, 66/1534 in group B, 58/712 in group C, and 88/619 in group D. Compared with group A, the odds ratio (ORs) for newly diagnosed DM (after adjusting for DM-associated factors) was found to increase with casual serum TG level: 1.38 (group B), 1.79 (group C), and 2.36 (group D). Moreover, the OR for newly diagnosed DM was higher in participants with high casual serum TG levels who were also male (OR 2.46), obese (OR 4.18), or had a high serum glucose level (OR 6.96) than in the reference group. Conclusions Serum TG level ≥150 mg/dL when fasting or nonfasting is a significant predictor of type 2 diabetes in middle-aged Japanese workers.
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Affiliation(s)
- Tomofumi Nishikawa
- 1Department of Health and Nutrition, Kyoto Koka Women's University, 38 Kadonocho, Nishikyogoku, Ukyo-Ku, Kyoto, 615-0822 Japan
- 4Department of Clinical Nursing, Shiga University of Medical Science, Otsu, Japan
| | - T Okamura
- 2Preventive Medicine and Public Health, Keio University, Tokyo, Japan
| | - A Shima
- Heiwado Co., Ltd., Hikone, Japan
- 4Department of Clinical Nursing, Shiga University of Medical Science, Otsu, Japan
| | | | - D Sugiyama
- 2Preventive Medicine and Public Health, Keio University, Tokyo, Japan
| | - A Kadota
- 5Osaka Kyoiku University, Osaka, Japan
| | - A Morimoto
- 4Department of Clinical Nursing, Shiga University of Medical Science, Otsu, Japan
| | - Y Tatsumi
- 4Department of Clinical Nursing, Shiga University of Medical Science, Otsu, Japan
- 6Department of Mathematical Health Science, Graduate School of Osaka University, Suita, Japan
| | - K Godai
- 4Department of Clinical Nursing, Shiga University of Medical Science, Otsu, Japan
| | - N Miyamatsu
- 4Department of Clinical Nursing, Shiga University of Medical Science, Otsu, Japan
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30
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Takegami M, Watanabe M, Higashiyama A, Tatsumi Y, Nakai M, Nakao YM, Nishimura K, Kokubo Y, Miyamoto Y. Usefulness of LDL-C to HDL-C ratio in assessing risk of cardiovascular diseases: The Suita study. Eur J Public Health 2015. [DOI: 10.1093/eurpub/ckv175.108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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31
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Hotta K, Ueyama J, Tatsumi Y, Tsukiyama I, Sugiura Y, Saito H, Matsuura K, Hasegawa T. Lack of Contribution of Multidrug Resistance-associated Protein and Organic Anion-transporting Polypeptide to Pharmacokinetics of Regorafenib, a Novel Multi-Kinase Inhibitor, in Rats. Anticancer Res 2015; 35:4681-4689. [PMID: 26254357] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We investigated whether hepatic multidrug resistance-associated protein 2 (ABCC2) is involved in the hepatobiliary excretion of regorafenib, a novel multi-kinase inhibitor, using Sprague-Dawley (SD) rats and Eisai hyperbilirubinemic rats (EHBR) lacking the efflux transporter ABCC2. The involvement of organic anion-transporting polypeptide 1 (OATP1; OATP in humans) and OATP2 in the hepatic uptake of regorafenib and their protein levels in the liver were also investigated in the two rat groups. When regorafenib (5 mg/kg) was administered intravenously, the plasma concentrations of regorafenib were higher in EHBR than those in SD rats. However, the slope of the plasma concentration-time curves was the same for the two groups. Although the apparent biliary clearance of regorafenib in EHBR was lower than that of SD rats, no significant difference in the biliary excretion rate was observed between them, suggesting that regorafenib is not a substrate for ABCC2 and is not excreted into bile by ABCC2. It was also found that the contribution of biliary excretion to the systemic elimination of regorafenib is small. The protein-binding profiles of regorafenib were found to be linear in both rat groups. The binding potency, which was very high in both rat groups (>99.5%), was significantly higher in EHBR than that in SD rats. No significant differences in the plasma concentrations of unbound regorafenib were observed between the two rat groups, suggesting that the differences observed in the pharmacokinetic behaviors of regorafenib between the two rat groups were due to differences in protein-binding. When the protein levels of hepatic OATP1 and OATP2 were measured by immunoblot analysis, the expression of both transporters in EHBR was less than 40% of that in SD rats. The present results suggest that regorafenib is not a substrate for OATP1 and OATP2. These findings suggest the possibility that ABCC2-mediated hepatobiliary excretion and OATP1/OATP2-mediated hepatic uptake do not play important roles in the disposition of regorafenib.
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Affiliation(s)
- Kazuo Hotta
- Department of Hospital Pharmacy, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - Jun Ueyama
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Higashi-ku, Nagoya, Aichi, Japan
| | - Yasuaki Tatsumi
- Department of Medicine, Aichi Gakuin University School of Pharmacy, Chikusa-ku, Nagoya, Aichi, Japan
| | - Ikuto Tsukiyama
- Department of Hospital Pharmacy, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - Yuka Sugiura
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Higashi-ku, Nagoya, Aichi, Japan
| | - Hiroko Saito
- Faculty of Pharmacy, Meijo University, Tenpaku-ku, Nagoya, Aichi, Japan
| | - Katsuhiko Matsuura
- Department of Hospital Pharmacy, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - Takaaki Hasegawa
- Department of Hospital Pharmacy, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
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Tatsumi Y, Ishihara J, Morimoto A, Ohno Y, Watanabe S. Seasonal differences in total antioxidant capacity intake from foods consumed by a Japanese population. Eur J Clin Nutr 2014; 68:799-803. [PMID: 24736680 DOI: 10.1038/ejcn.2014.65] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 03/07/2014] [Accepted: 03/08/2014] [Indexed: 11/09/2022]
Abstract
BACKGROUND/OBJECTIVES This cross-sectional study aimed to estimate total antioxidant capacity (TAC) intake from food and beverages in a Japanese population from 7-day seasonal dietary records. SUBJECTS/METHODS The 7-day weighed dietary records of 390 subjects over four seasons between 1996 and 1998 were used. The TAC values (μmol trolox equivalents (μmol TE)/g) of various foods and beverages were defined, as reported in previous studies for weighed dietary records, using several different methods. TAC values of foods were estimated in 242 food and beverage items: 86.5% of vegetables, 99.1% of fruits, 71.5% of potatoes, 96.7% of beans, and 100% of chocolates. Differences in TAC intake per day and intake (g) per day among seasons in each of the food and beverage group were compared using a general linear model for repeated measures. The TAC intake/day were calculated for each food and beverage item in the four seasons. RESULTS TAC intake/day (μmol TE/day) varied from 10 189 (summer) to 12 292 (winter). TAC intake/day from fruits (2696) and potatoes (395) was highest in autumn, from vegetables (2827) it was highest in summer and from beans (4151) and tea (2331) it was highest in winter. CONCLUSIONS The dietary habits of the studied Japanese population showed the highest antioxidant capacity in winter and the lowest in summer.
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Affiliation(s)
- Y Tatsumi
- Department of Mathematical Health Science, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - J Ishihara
- Department of Nutrition Science, Sagami Women's University, Kanagawa, Japan
| | - A Morimoto
- Department of Clinical Nursing, Shiga University of Medical Science, Shiga, Japan
| | - Y Ohno
- Department of Mathematical Health Science, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - S Watanabe
- Life Science Promoting Association, Tokyo, Japan
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Hirayama S, Terasawa K, Rabeler R, Hirayama T, Inoue T, Tatsumi Y, Purpura M, Jäger R. The effect of phosphatidylserine administration on memory and symptoms of attention-deficit hyperactivity disorder: a randomised, double-blind, placebo-controlled clinical trial. J Hum Nutr Diet 2013; 27 Suppl 2:284-91. [PMID: 23495677 DOI: 10.1111/jhn.12090] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [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: 12/27/2022]
Abstract
BACKGROUND Attention-deficit hyperactivity disorder (ADHD) is the most commonly diagnosed behavioural disorder of childhood, affecting 3-5% of school-age children. The present study investigated whether the supplementation of soy-derived phosphatidylserine (PS), a naturally occurring phospholipid, improves ADHD symptoms in children. METHODS Thirty six children, aged 4-14 years, who had not previously received any drug treatment related to ADHD, received placebo (n = 17) or 200 mg day(-1) PS (n = 19) for 2 months in a randomised, double-blind manner. Main outcome measures included: (i) ADHD symptoms based on DSM-IV-TR; (ii) short-term auditory memory and working memory using the Digit Span Test of the Wechsler Intelligence Scale for Children; and (iii) mental performance to visual stimuli (GO/NO GO task). RESULTS PS supplementation resulted in significant improvements in: (i) ADHD (P < 0.01), AD (P < 0.01) and HD (P < 0.01); (ii) short-term auditory memory (P < 0.05); and (iii) inattention (differentiation and reverse differentiation, P < 0.05) and inattention and impulsivity (P < 0.05). No significant differences were observed in other measurements and in the placebo group. PS was well-tolerated and showed no adverse effects. CONCLUSIONS PS significantly improved ADHD symptoms and short-term auditory memory in children. PS supplementation might be a safe and natural nutritional strategy for improving mental performance in young children suffering from ADHD.
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Affiliation(s)
- S Hirayama
- Department of Early Childhood Education and Care, Kurashiki City College, Okayama, Japan; Daigokyou, Kyoto, Japan
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Hattori A, Miyajima H, Tomosugi N, Tatsumi Y, Hayashi H, Wakusawa S. Clinicopathological study of Japanese patients with genetic iron overload syndromes. Pathol Int 2013; 62:612-8. [PMID: 22924847 DOI: 10.1111/j.1440-1827.2012.02848.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In addition to hemochromatosis, aceruloplasminemia and ferroportin disease may be complicated by iron-induced multiple organ damage. Therefore, clinicopathological features should be evaluated in a wider range of genetic iron disorders. This study included 16 Japanese patients with genetic iron overload syndromes. The responsible genes were CP in four, HAMP in one, HJV in three, TFR2 in five, and SLC40A1 in three patients. No phenotype dissociation was observed in patients with the CP, TFR2, or HAMP genotypes. Two of the three patients with the HJV genotype displayed classic hemochromatosis instead of the juvenile type. Patients with the SLC40A1 genotype were affected by mild iron overload (ferroportin A) or severe iron overload (ferroportin B). Transferrin saturation was unusually low in aceruloplasminemia patients. All patients, except those with ferroportin disease, displayed low serum hepcidin-25 levels. Liver pathology showed phenotype-specific changes; isolated parenchymal iron loading in aceruloplasminemia, periportal fibrosis associated with heavy iron overload in both parenchymal and Kupffer cells of ferroportin B, and parenchyma-dominant iron-loading cirrhosis in hemochromatosis. In contrast, diabetes occurred in all phenotypes of aceruloplasminemia, hemochromatosis, and ferroportin disease B. In conclusion, clinicopathological features were partially characterized in Japanese patients with genetic iron overload syndromes.
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Affiliation(s)
- Ai Hattori
- Department of Medical Technology, Nagoya University Graduate School of Health Sciences, Nagoya, Japan.
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Ohashi H, Arita K, Suzuki Y, Tomita A, Naoe T, Hattori A, Tatsumi Y, Kato K, Nagai H. Iron chelation therapy for a case of transfusion-independent MDS-RARS with significant iron overload. Int J Hematol 2012. [PMID: 23208667 DOI: 10.1007/s12185-012-1230-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Hayashi H, Shinohara T, Goto K, Fujita Y, Murakami Y, Hattori A, Tatsumi Y, Shimizu A, Ichiki T. Liver structures of a patient with idiopathic copper toxicosis. Med Mol Morphol 2012; 45:105-9. [PMID: 22718296 DOI: 10.1007/s00795-011-0556-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2011] [Accepted: 07/06/2011] [Indexed: 11/28/2022]
Abstract
This is the first report describing the liver structures of a Japanese patient with idiopathic copper toxicosis, which should be differentiated from hepatolenticular degeneration of Wilson disease. An 11-year-old Japanese boy presented with ascites associated with biochemical liver damage. Involvement of hepatitis virus was ruled out by laboratory tests. Because urinary copper excretion was increased, Wilson disease was highly suspected, but the serum level of ceruloplasmin was normal, and Kayser-Fleischer rings were not detected by slit lamp examination. Brain images were within normal limits. ATP7B analysis was negative for mutations. Liver specimen showed cirrhosis associated with chronic active hepatitis. Almost all hepatocytes were positive for orcein-stained granules. Mallory bodies were found in some hepatocytes. Fatty change was minimal, and there were no glycogenated nuclei in the parenchyma. Combined regimens of trientine and zinc for 6 months improved the decompensated state of liver function. After 2.5 years of treatment, a second liver biopsy was performed. The post-treatment liver showed complete disappearance of portal inflammation and remarkable decrease in cuprothionein granules. Mallory bodies disappeared from the parenchyma. An abundance of hepatocellular Mallory bodies and heavy copper loading limited to the liver may be specific to idiopathic copper toxicosis.
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Affiliation(s)
- Hisao Hayashi
- Department of Medicine, Aichi Gakuin University School of Pharmacy, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya, 464-8650, Japan.
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Hattori A, Tomosugi N, Tatsumi Y, Suzuki A, Hayashi K, Katano Y, Inagaki Y, Ishikawa T, Hayashi H, Goto H, Wakusawa S. Identification of a novel mutation in the HAMP gene that causes non-detectable hepcidin molecules in a Japanese male patient with juvenile hemochromatosis. Blood Cells Mol Dis 2012; 48:179-82. [DOI: 10.1016/j.bcmd.2012.01.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Revised: 12/29/2011] [Accepted: 12/30/2011] [Indexed: 10/14/2022]
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Maeda T, Nakamaki T, Saito B, Nakashima H, Ariizumi H, Yanagisawa K, Hattori A, Tatsumi Y, Hayashi H, Suzuki K, Tomoyasu S. Hemojuvelin hemochromatosis receiving iron chelation therapy with deferasirox: improvement of liver disease activity, cardiac and hematological function. Eur J Haematol 2011; 87:467-9. [DOI: 10.1111/j.1600-0609.2011.01693.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Tatsumi Y, Shinohara T, Imoto M, Wakusawa S, Yano M, Hayashi K, Hattori A, Hayashi H, Shimizu A, Ichiki T, Nakashima S, Katano Y, Goto H. Potential of the international scoring system for the diagnosis of Wilson disease to differentiate Japanese patients who need anti-copper treatment. Hepatol Res 2011; 41:887-96. [PMID: 21707886 DOI: 10.1111/j.1872-034x.2011.00835.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [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: 02/08/2023]
Abstract
AIM Patients with Wilson disease show complex clinical features. Accurate diagnosis at the initial clinical manifestation is important for patients to receive effective treatment with anti-copper agents. In this study, we assessed whether the international scoring system for the diagnosis of Wilson disease is a reliable tool for screening Japanese patients with primary copper toxicosis requiring anti-copper treatment. METHODS Twenty-three Japanese patients suspected of Wilson disease were enrolled in this study. We performed long-range polymerase chain reaction to detect ATP7B mutations in this series. Finally, we retrospectively assessed the reliability of using a diagnostic score of 4 or more points as the cut-off for this scoring system. RESULTS Ten patients were homozygous or compound heterozygous for ATP7B mutations including a novel mutation of 3837 bp deletion including 3 exons. The mutation would have been missed by the traditional analysis. Six patients were heterozygous for ATP7B mutations. Three of these six patients had additional diagnostic points. The other three patients were diagnosed as carriers of a mutant gene based on their low scores. One of the seven patients free from ATP7B mutation was affected by copper toxicosis. Though the score was 3 points based on increased urinary copper and copper-positive cirrhosis, anti-copper treatment promptly improved liver failure, which was likely due to idiopathic copper toxicosis. CONCLUSION The international scoring system for diagnosis of Wilson disease is a fairly reliable tool for screening Japanese patients who need anti-copper treatment. Caution is needed for patients with possible idiopathic copper toxicosis because the maximal score is 4 points.
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Affiliation(s)
- Yasuaki Tatsumi
- Department of Medicine, Aichi Gakuin University School of Pharmacy Division of Medical Technology, Nagoya University School of Health Sciences Department of Internal Medicine, Division of Gastroenterology, Nagoya University Graduate School of Medicine, Nagoya Department of Pediatrics, Kainan Hospital, Aichi Department of Internal Medicine, Kariya Toyota General Hospital, Kariya Department of Internal Medicine, Yokkaichi Municipal Hospital, Yokkaichi, Japan
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Miyatake H, Sanjoh A, Matsuda G, Tatsumi Y, Dohmae N, Aida Y. Crystal structure of human importin-α (Rch1). Acta Crystallogr A 2011. [DOI: 10.1107/s010876731109115x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Kaneko Y, Miyajima H, Piperno A, Tomosugi N, Hayashi H, Morotomi N, Tsuchida KI, Ikeda T, Ishikawa A, Ota Y, Wakusawa S, Yoshioka K, Kono S, Pelucchi S, Hattori A, Tatsumi Y, Okada T, Yamagishi M. Measurement of serum hepcidin-25 levels as a potential test for diagnosing hemochromatosis and related disorders. J Gastroenterol 2010; 45:1163-71. [PMID: 20533066 DOI: 10.1007/s00535-010-0259-8] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [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] [Received: 12/07/2009] [Accepted: 05/09/2010] [Indexed: 02/07/2023]
Abstract
BACKGROUND Iron overload syndromes include a wide spectrum of genetic and acquired conditions. Recent studies suggest suppressed hepcidin synthesis in the liver to be the molecular basis of hemochromatosis. However, a liver with acquired iron overload synthesizes an adequate amount of hepcidin. Thus, hepcidin could function as a biochemical marker for differential diagnosis of iron overload syndromes. METHODS We measured serum iron parameters and hepcidin-25 levels followed by sequencing HFE, HJV, HAMP, TFR2, and SLC40A1 genes in 13 Japanese patients with iron overload syndromes. In addition, we performed direct measurement of serum hepcidin-25 levels using liquid chromatography-tandem mass spectrometry in 3 Japanese patients with aceruloplasminemia and 4 Italians with HFE hemochromatosis. RESULTS One patient with HJV hemochromatosis, 2 with TFR2 hemochromatosis, and 3 with ferroportin disease were found among the 13 Japanese patients. The remaining 7 Japanese patients showed no evidence for genetic basis of iron overload syndrome. As far as the serum hepcidin-25 was concerned, seven patients with hemochromatosis and 3 with aceruloplasminemia showed markedly decreased serum hepcidin-25 levels. In contrast, 3 patients with ferroportin disease and 7 with secondary iron overload syndromes showed serum hepcidin levels parallel to their hyperferritinemia. Patients with iron overload syndromes were divided into 2 phenotypes presenting as low and high hepcidinemia. These were then associated with their genotypes. CONCLUSION Determining serum hepcidin-25 levels may aid differential diagnosis of iron overload syndromes prior to genetic analysis.
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Affiliation(s)
- Yoshibumi Kaneko
- Department of Internal Medicine, Graduate School of Medicine, Kanazawa University, Kanazawa, Ishikawa, Japan.
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Tatsumi Y, Hattori A, Hayashi H, Ikoma J, Kaito M, Imoto M, Wakusawa S, Yano M, Hayashi K, Katano Y, Goto H, Okada T, Kaneko S. Current state of Wilson disease patients in central Japan. Intern Med 2010; 49:809-15. [PMID: 20453399 DOI: 10.2169/internalmedicine.49.2931] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
OBJECTIVE This study evaluated the current state of patients with Wilson disease in central Japan. PATIENTS AND METHODS Between 1999 and 2007, 30 patients were diagnosed as having Wilson disease with an International Diagnostic Score of 4 or more. The phenotypes, genotypes and post-diagnostic courses of these patients were analyzed. RESULTS Twenty-six patients had ATP7B mutations responsible for Wilson disease. Four patients had a single mutant chromosome. There were 2 major mutations of 2333 G>T and 2871 delC (40%), and 6 novel mutations (13%) in our patients. The first clinical manifestation was the hepatic form in 22, neurological form in 5, and hemolysis in 3 patients. The hepatic form was diagnosed around the age of 13 years, followed by neurological complication with a time lag of 9 years. Thus, some patients, especially patients with the neurological form, did not undergo early diagnostic tests including ATP7B analysis. During the post-diagnosis period, 3 patients were hospitalized for recurrent liver disease, and 2 patients committed suicide. One female patient died from acute hepatic failure associated with encephalopathy after fertilization therapy, while 2 male patients recovered from encephalopathy-free, prolonged hepatic failure after noncompliance with drug therapy. The King's Scores for liver transplantation were below the cut-off in both cases. CONCLUSION To minimize delayed diagnosis, ceruloplasmin determination and ATP7B analysis may be recommended to patients showing hepatic damage of unknown etiology. At gene diagnosis, appropriate management of patients including compliance education and emotional care to prevent suicide might be important.
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Affiliation(s)
- Yasuaki Tatsumi
- Department of Medicine, Aichi Gakuin University School of Pharmacy, Nagoya
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Hayashi H, Piperno A, Tomosugi N, Hayashi K, Kimura F, Wakusawa S, Yano M, Tatsumi Y, Hattori A, Pelucchi S, Katano Y, Goto H. Patients with chronic hepatitis C may be more sensitive to iron hepatotoxicity than patients with HFE-hemochromatosis. Intern Med 2010; 49:2371-7. [PMID: 21088336 DOI: 10.2169/internalmedicine.49.4088] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
AIM In chronic hepatitis C, iron might play an important role as a hepatotoxic co-factor. Therefore, venesection, a standard treatment for hemochromatosis, has been proposed as an alternative for patients who respond poorly to anti-viral therapy. To improve our understanding of iron-induced hepatotoxicity, we compared the responses to venesection between patients with chronic hepatitis C and those with HFE-hemochromatosis. METHODS Fourteen Japanese patients with chronic hepatitis C and eight Italian patients with HFE-hemochromatosis underwent repeated venesection with a serum ferritin endpoint of 20 and 50 ng/mL, respectively. Serum iron indices and liver function tests were measured in pre- and post treatment blood samples from each patient. Body iron stores were calculated using the removed blood volume. RESULTS In both patients with hepatitis and hemochromatosis, serum ferritin, aminotransferase and hepcidin 25 were reduced after venesection. The serum aminotransferase activity, but not the serum ferritin level, was predictive of effective iron removal treatment. Hepcidin regulation was set at an inappropriately low level in hemochromatosis patients (11.1 ± 9.2 ng/mL), but not so in hepatitis patients (30.7 ± 14.5 ng/mL). Inversely, the estimated body iron stores of hemochromatosis patients were 5,960 ± 2,750 mg, while those of hepatitis patients were 730 ± 560 mg. Judging from the liver enzyme reduction ratio, patients with hepatitis seemed to be more sensitive to iron hepatotoxicity than hemochromatosis patients. CONCLUSION Even though the threshold of iron hepatotoxicity and benefit of its removal differ between patients with chronic hepatitis C and those with HFE-hemochromatosis, venesection is a valid choice of treatment to reduce liver disease activity in both diseases.
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Affiliation(s)
- Hisao Hayashi
- Department of Medicine, Aichi Gakuin University School of Pharmacy, Nagoya, Japan.
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Hayashi H, Fujita Y, Tatsumi Y, Hattori A, Hayashi K, Katano Y, Wakusawa S, Yano M, Itoh M, Mizutani N, Goto H. Special stain and X-ray probe microanalysis of livers with Wilson disease. Hepatol Res 2009; 39:563-8. [PMID: 19254344 DOI: 10.1111/j.1872-034x.2009.00491.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 02/08/2023]
Abstract
AIM Primary copper toxicosis due to Wilson disease is clinically complex, often leading to delayed diagnosis. Because the metabolic disorder is frequently complicated by iron overload due to hypoceruloplasminemia, either a special stain or microanalysis has been recommended for liver biopsy specimens. METHODS Liver biopsy was performed in three patients in whom Wilson disease was highly suspected. Light microscopic study included rubeanic acid stain for copper and Berlin blue stain for iron. To improve the resolution of ultra-structures and preservation of toxic metals, short-term fixation with a 0.1% osmic acid solution was applied for X-ray probe microanalysis. Their diagnosis was confirmed by genetic study and copper chelation therapy. RESULTS Two patients at the age of 17 and 23 years, respectively, demonstrated cirrhotic livers surrounded by fibrous septa, while a 7-year-old patient demonstrated fatty liver with mildly expanded portal tracts. Both copper grains stained with rubeanic acid and cuprothionein by microanalysis were found in the cirrhotic livers of aged patients. However, either morphological method failed to detect copper deposition in fatty liver tissues from the young patient. Iron deposits were also found in the cirrhotic livers of aged patients. The molecular basis of Wilson disease was confirmed by gene analysis. All patients responded to copper chelation therapy. CONCLUSION A morphological method of special staining or microanalysis improved with a new fixative may be unreliable for detecting diffusely distributed copper in the early stage of Wilson liver disease.
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Affiliation(s)
- Hisao Hayashi
- Department of Medicine, Aichi Gakuin University School of Pharmacy
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Tatsumi Y, Inoue K, Kanemasa H, Toma A, Tsukamoto K, Kajita Y. Very large gastric ulcer with a round lesion. Gut 2009; 58:232, 293. [PMID: 19136522 DOI: 10.1136/gut.2008.159921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Affiliation(s)
- Y Tatsumi
- Department of Gastroenterology, Nantan General Hospital, 25 Yagi-ueno, Yagi-cho, Nantan City, Kyoto Prefecture, 629-0197, Japan.
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Arisawa S, Ishida K, Kameyama N, Ueyama J, Hattori A, Tatsumi Y, Hayashi H, Yano M, Hayashi K, Katano Y, Goto H, Takagi K, Wakusawa S. Ursodeoxycholic acid induces glutathione synthesis through activation of PI3K/Akt pathway in HepG2 cells. Biochem Pharmacol 2008; 77:858-66. [PMID: 19073151 DOI: 10.1016/j.bcp.2008.11.012] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2008] [Revised: 11/10/2008] [Accepted: 11/18/2008] [Indexed: 02/07/2023]
Abstract
Ursodeoxycholic acid (UDCA) is widely recognized as an effective compound in the treatment of chronic hepatitis and is known to modulate the redox state of the liver accompanied by an increase of GSH. In the present study, to access the antioxidative effect of UDCA and to clarify the molecular basis of the action on GSH level, we evaluated its effects in HepG2 cells exposed to excessive iron. UDCA inhibited both a decrease in the GSH level and an increase in the reactive oxygen species caused by excessive iron in the cells. UDCA increased the gene expression of the catalytic- and modifier-units of glutamine-cysteine ligase (GCL), which is a key enzyme in GSH synthesis. We further investigated the effect of UDCA on the phosphatidylinositol 3-kinase (PI3K)/Akt pathway, and obtained results showing that UDCA-induced increase in the GSH level was prevented by LY294002, a PI3K inhibitor. In addition, Western blot analysis of Akt showed that, while the total Akt level remained unchanged, the phosphorylated Akt level was increased by UDCA, and this increase was also prevented by LY294002. Moreover, UDCA promoted the translocation of a transcription factor, nuclear factor-E2-related factor-2 (Nrf2), into the nucleus, and this action was inhibited by LY294002. From these results, it was indicated that UDCA increased the GSH synthesis through an activation of the PI3K/Akt/Nrf2 pathway. This may be a primary mechanism of antioxidative action of UDCA concerned with its therapeutic effectiveness in chronic hepatitis.
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Affiliation(s)
- Sakiko Arisawa
- Department of Medical Technology, Nagoya University School of Health Sciences, Nagoya, Japan
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Sanjoh A, Tatsumi Y, Miyatake H, Dohmae N, Matsuda G, Aida Y. Co-crystallization and X-ray studies of HIV-1 Vpr-Importin-alpha and Vpr-inhibitor complexes. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308089484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Nagai-Kusuhara A, Nakamura M, Tatsumi Y, Nakanishi Y, Negi A. Disagreement between Heidelberg Retina Tomograph and optical coherence tomography in assessing optic nerve head configuration of eyes with band atrophy and normal eyes. Br J Ophthalmol 2008; 92:1382-6. [DOI: 10.1136/bjo.2007.134098] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Ohkado A, Nagamine M, Murase Y, Uchimura K, Kaguraoka S, Tatsumi Y, Yamada N, Ohmori M, Maeda S, Maeda H, Kato S, Mori T, Ishikawa N. Molecular epidemiology of Mycobacterium tuberculosis in an urban area in Japan, 2002-2006. Int J Tuberc Lung Dis 2008; 12:548-554. [PMID: 18419891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023] Open
Abstract
SETTING Shinjuku City, Tokyo, Japan. OBJECTIVE To evaluate the status of transmission of Mycobacterium tuberculosis in Shinjuku City to allocate resources efficiently and effectively for a successful tuberculosis (TB) control programme. DESIGN Observational descriptive study combining the genotype data of M. tuberculosis with TB patient profiles. RESULTS The genotype clustering rate was significantly higher in males (adjusted odds ratio [aOR] 1.94, 95%CI 1.04-3.65, P = 0.038), patients aged <40 years (aOR 2.09, 95%CI 1.17-3.71, P = 0.012) and the homeless (aOR 2.72, 95%CI 1.42-5.20, P = 0.002), and was lower for the foreign-born (aOR 0.21, 95%CI 0.06-0.76, P = 0.017). Among 45 genotype clusters containing 152 TB patients, 26 clusters containing 102 patients (67.1%) were composed of a mix of homeless and non-homeless patients. One of the mixed clusters included an 8-month-old infant born in Japan. CONCLUSION The study revealed that M. tuberculosis transmission occurred more frequently among the homeless than in non-homeless persons. However, transmission by casual contact between the homeless and the general population was also shown to occur.
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Affiliation(s)
- A Ohkado
- Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Kiyose, Japan.
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