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Fujimoto R, Suzuki E, Kashima S, Kazufumi N, Oka T, Ito H, Yorifuji T. Ambient heat exposure after the rainy season is associated with an increased risk of Stroke. Eur Heart J 2023. [DOI: 10.1093/eurheartj/ehac779.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Stroke is a major global health issue and Climate change is the biggest and most urgent challenges. The Asia and Pacific region have been more vulnerable to climate change and extreme heat exposure than other regions of the world. Despite the growing concern for heat waves, few studies have investigated heat exposure and the risk of Stroke in the elderly considering effect of Asian meteorological factors.
Purpose
We aimed to examine the association between heat exposure and the risk of Stroke in the elderly and to evaluate possible effect-measure modifications by the rainy season, which is a characteristic climatic occurrence in East Asia.
Methods
Our study was designed as a time-stratified case-crossover. The study included 3367 residents in the city, Japan, aged 65 years or older who were dispatched to emergency hospitals between 2012 and 2019 for the onset of Stroke during and a few months after the rainy seasons (Picture 1). We examined the association between temperature and Stroke onset during and a few months after the rainy seasons with conditional logistic analysis adjusted for relative humidity, barometric pressure, and particulate matter less than 2.5 µm in diameter (pm 2.5). Furthermore, we examined analyses on effect-measure modification where is the exposure of a 1°C increase in temperature and potential effect modifier as stratified during and after the rainy seasons.
Results
Heat exposure during one month after the rainy season was associated with Stroke risk; the adjusted odds ratio (OR) for a 1°C increase in temperature was 1.34 (95% confidence interval [CI]: 1.29-1.39). In stratified type of the stroke, Hemorrhagic stroke (OR: 1.37, 95% CI: 1.24-1.51), Ischemic stroke (OR: 1.37, 95% CI: 1.24-1.53), and Transient ischemic attack (OR: 1.43, 95%CI: 1.23-1.68) were significantly associated with heat exposure during one month after the rainy season respectively (Picture 2). In the results of analyses on effect modification, one month after the rainy season group was highest than other groups when reference was during the rainy seasons (OR: 1.34, 95% CI: 1.3-1.39, P<0.001 [Measure of effect modification on additive scale]).
Conclusions
The present study suggests that heat exposure increases the risk of Stroke onset during the month after the end of the rainy season in the elderly. We propose that public health measures, such as maintenance designed high-insulated housing and improved air conditioning control, be implemented in the Asia and Pacific region to address heat exposure during one month after the rainy season, which can affect the incidence of stroke in the elderly.
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Affiliation(s)
- R Fujimoto
- Tsuyama Central Hospital, Cardiovascular Center, Cardiovascular Medicine , Tsuyama , Japan
| | - E Suzuki
- Okayama University, Graduated School of Medicine, Dentistry and Pharmaceutical Sciences, Epidemiology , Okayama , Japan
| | - S Kashima
- Hiroshima University, Environmental Health Sciences Laboratory, Graduate School of Advanced Science and Engineering , Hiroshima , Japan
| | - N Kazufumi
- Okayama University, Graduated School of Medicine, Dentistry and Pharmaceutical Sciences, Cardiovascular Medicine , Okayama , Japan
| | - T Oka
- Tsuyama Central Hospital, Cardiovascular Center, Cardiovascular Medicine , Tsuyama , Japan
| | - H Ito
- Okayama University, Graduated School of Medicine, Dentistry and Pharmaceutical Sciences, Cardiovascular Medicine , Okayama , Japan
| | - T Yorifuji
- Okayama University, Graduated School of Medicine, Dentistry and Pharmaceutical Sciences, Epidemiology , Okayama , Japan
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2
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Suzuki E, Miyado M, Kuroki Y, Fukami M. Genetic variants of G-protein coupled receptors associated with pubertal disorders. Reprod Med Biol 2023; 22:e12515. [PMID: 37122876 PMCID: PMC10134480 DOI: 10.1002/rmb2.12515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 04/02/2023] [Accepted: 04/11/2023] [Indexed: 05/02/2023] Open
Abstract
Background The human hypothalamic-pituitary-gonadal (HPG) axis is the regulatory center for pubertal development. This axis involves six G-protein coupled receptors (GPCRs) encoded by KISS1R, TACR3, PROKR2, GNRHR, LHCGR, and FSHR. Methods Previous studies have identified several rare variants of the six GPCR genes in patients with pubertal disorders. In vitro assays and animal studies have provided information on the function of wild-type and variant GPCRs. Main Findings Of the six GPCRs, those encoded by KISS1R and TACR3 are likely to reside at the top of the HPG axis. Several loss-of-function variants in the six genes were shown to cause late/absent puberty. In particular, variants in KISS1R, TACR3, PROKR2, and GNRHR lead to hypogonadotropic hypogonadism in autosomal dominant, recessive, and oligogenic manners. Furthermore, a few gain-of-function variants of KISS1R, PROKR2, and LHCGR have been implicated in precocious puberty. The human HPG axis may contain additional GPCRs. Conclusion The six GPCRs in the HPG axis govern pubertal development through fine-tuning of hormone secretion. Rare sequence variants in these genes jointly account for a certain percentage of genetic causes of pubertal disorders. Still, much remains to be clarified about the molecular network involving the six GPCRs.
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Affiliation(s)
- Erina Suzuki
- Department of Molecular EndocrinologyNational Research Institute for Child Health and DevelopmentTokyoJapan
| | - Mami Miyado
- Department of Molecular EndocrinologyNational Research Institute for Child Health and DevelopmentTokyoJapan
- Department of Food and NutritionBeppu UniversityOitaJapan
| | - Yoko Kuroki
- Department of Genome Medicine, National Center for Child Health and DevelopmentTokyoJapan
- Division of Collaborative Research, National Center for Child Health and DevelopmentTokyoJapan
- Division of Diversity ResearchNational Research Institute for Child Health and DevelopmentTokyoJapan
| | - Maki Fukami
- Department of Molecular EndocrinologyNational Research Institute for Child Health and DevelopmentTokyoJapan
- Division of Diversity ResearchNational Research Institute for Child Health and DevelopmentTokyoJapan
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3
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Fujimoto R, Suzuki E, Nakamura K, Yorifuji T, Ito H. Heat exposure after the rainy season is associated with an increased risk of cardiovascular emergency. Eur J Prev Cardiol 2022. [DOI: 10.1093/eurjpc/zwac056.194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Climate change and global warming are some of the biggest issues in our society. Despite the growing concern for heat waves, while some previous studies have examined the effects of heat on CVD by focusing on maximum or mean daily temperature or long heat exposure periods, few studies have investigated the hourly effects of heat exposure and the risk of cardiovascular diseases (CVDs) in the elderly.
Purpose
We aimed to examine the association between heat exposure and the risk of CVD in the elderly and to evaluate possible effect-measure modifications by the rainy season in East Asia.
Methods
Our study was designed as a time-stratified case-crossover. The study included 6527 residents in Japan, aged 65 years or older who were dispatched to emergency hospitals between 2012 and 2019 for the onset of CVD during and a few months after the rainy seasons. We examined the association between temperature and CVD onset for each year and for hourly intervals (lag) before the emergency call during the most relevant months.
Results
Heat exposure during one month after the rainy season was associated with CVD risk; the odds ratio (OR) for a 1°C increase in temperature was 1.34 (95% confidence interval [CI]: 1.29–1.39). By hourly time interval (lag) before the emergency call during the month after the end of the rainy season, 0-6 hour before the case event (lag 0–6) were associated with CVD risk, particularly for lag 0–1 (OR: 1.33, 95% CI: 1.28–1.39). For longer periods, the highest risk was at lag 0-23 (OR: 1.40, 95% CI: 1.34-1.46) (Picture).
Conclusions
The present study suggests that heat exposure increases the risk of CVD onset during the month after the end of the rainy season in the elderly. Hourly exposure in less than one day to heat rise obtained from the temporal resolution may triggers CVD onset.
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Affiliation(s)
- R Fujimoto
- Tsuyama Central Hospital, cardiovascular medicine, Tsuyama, Japan
| | - E Suzuki
- Okayama University, epidemiology, Okayama, Japan
| | - K Nakamura
- Okayama University Hospital, cardiovascular medicine, Okayama, Japan
| | - T Yorifuji
- Okayama University, epidemiology, Okayama, Japan
| | - H Ito
- Okayama University Hospital, cardiovascular medicine, Okayama, Japan
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4
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Kato T, Momose M, Uemura Y, Naya M, Matsumoto N, Hida S, Yamauchi T, Nakajima T, Suzuki E, Inoko M, Tamaki N. Association of the extent of myocardial ischemia with outcomes in patients with suspected coronary artery disease in Japan: a cohort study. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
There is an ongoing controversy regarding the necessity of single-photon emission computed tomography (SPECT) for patients with ischemic heart diseases after the publication of the results of the ISCHEMIA trial.
Purpose
We aimed to evaluate the association of the extent of myocardial ischemia with outcomes in patients with suspected coronary artery disease in Japan.
Methods
From the data of 2780 patients with stable angina who were enrolled prospectively between January 2006 and March 2008 in Japan and had undergone physician-referred non-invasive imaging tests, 1205 patients managed with SPECT were stratified by 10% myocardial ischemia. Major adverse cardiac events (MACEs), including death, myocardial infarction, hospitalization for heart failure, and late revascularization, were followed-up for 1 year.
Results
Patients with ≥10% myocardial ischemia (n=173) were older than patients with <10% myocardial ischemia (n=1032) and had a significantly higher 1-year cumulative incidence of MACEs (9.1% vs. 1.2%, P<0.0001). After adjusting for confounders, the risk of ≥10% myocardial ischemia relative to <10% myocardial ischemia for MACEs remained significant (adjusted hazard ratio [95% confidence interval], 2.40 [1.09–5.26], P=0.029).
Conclusion
The presence of ≥10% myocardial ischemia was significantly associated with the 1-year risk for MACEs in Japanese patients with suspected coronary artery disease.
Funding Acknowledgement
Type of funding sources: None. Study flowchartOutcomes
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Affiliation(s)
- T Kato
- Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - M Momose
- Tokyo Women's Medical University, Tokyo, Japan
| | - Y Uemura
- National Center for Global Health and Medicine, Tokyo, Japan
| | - M Naya
- Hokkaido University, Hokkaido, Japan
| | | | - S Hida
- Tokyo Medical University, Tokyo, Japan
| | | | - T Nakajima
- Saitama Cardiovascular and Respiratory Center, Kumagaya, Japan
| | - E Suzuki
- Hokkaido University, Hokkaido, Japan
| | - M Inoko
- Kitano Hospital, Osaka, Japan
| | - N Tamaki
- Kyoto Prefectural University of Medicine, Kyoto, Japan
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5
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Hayashi M, Wada J, Fujita M, Asano T, Matsuoka N, Fujita Y, Temmoku J, Matsumoto H, Yashio-Furuya M, Sato S, Kobayashi H, Watanabe H, Ryoichiro K, Waragai Y, Suzuki E, Kiko Y, Abe K, Takahashi A, Masuda T, Hashimoto Y, Migita K, Ohira H. TAFRO syndrome complicated by porto-sinusoidal vascular liver disease with portal hypertension: a case report. Clin J Gastroenterol 2021; 14:1711-1717. [PMID: 34487333 DOI: 10.1007/s12328-021-01515-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 08/31/2021] [Indexed: 01/16/2023]
Abstract
Porto-sinusoidal vascular liver disease (PSVD) is a disorder that can cause portal hypertension without liver cirrhosis. TAFRO syndrome is a systemic inflammatory disorder with a background of immunological abnormalities. We report a case of TAFRO syndrome complicated by PSVD with portal hypertension. A 39-year-old man developed refractory ascites and esophageal varices. Lymph node histology revealed multicentric Castleman disease-like features. Intravenous methylprednisolone and tocilizumab therapy improved ascites and renal dysfunction, but the patient developed severe infections. The diagnosis of TAFRO syndrome in patients complicated by PSVD with portal hypertension encourages the consideration of appropriate treatment for these patients.
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Affiliation(s)
- Manabu Hayashi
- Department of Gastroenterology, Fukushima Medical University, 1 Hikarigaoka, Fukushima, 960-1295, Japan.
| | - Jun Wada
- Department of Gastroenterology, Fukushima Medical University, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Masashi Fujita
- Department of Gastroenterology, Fukushima Medical University, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Tomoyuki Asano
- Department of Rheumatology, Fukushima Medical University, Fukushima, Japan
| | - Naoki Matsuoka
- Department of Rheumatology, Fukushima Medical University, Fukushima, Japan
| | - Yuya Fujita
- Department of Rheumatology, Fukushima Medical University, Fukushima, Japan
| | - Jumpei Temmoku
- Department of Rheumatology, Fukushima Medical University, Fukushima, Japan
| | - Haruki Matsumoto
- Department of Rheumatology, Fukushima Medical University, Fukushima, Japan
| | | | - Shuzo Sato
- Department of Rheumatology, Fukushima Medical University, Fukushima, Japan
| | - Hiroko Kobayashi
- Department of Rheumatology, Fukushima Medical University, Fukushima, Japan
| | - Hiroshi Watanabe
- Department of Rheumatology, Fukushima Medical University, Fukushima, Japan
| | - Kobashi Ryoichiro
- Department of Gastroenterology, Fukushima Medical University, 1 Hikarigaoka, Fukushima, 960-1295, Japan.,Department of Gastroenterology, Soma General Hospital, Soma, Japan
| | - Yuichi Waragai
- Department of Gastroenterology, Fukushima Medical University, 1 Hikarigaoka, Fukushima, 960-1295, Japan.,Department of Gastroenterology, Soma General Hospital, Soma, Japan
| | - Erina Suzuki
- Department of Diagnostic Pathology, Fukushima Medical University, Fukushima, Japan
| | - Yuichiro Kiko
- Department of Diagnostic Pathology, Fukushima Medical University, Fukushima, Japan
| | - Kazumichi Abe
- Department of Gastroenterology, Fukushima Medical University, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Atsushi Takahashi
- Department of Gastroenterology, Fukushima Medical University, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Tomoyuki Masuda
- Department of Pathology, School of Medicine, Iwate Medical University, Iwate, Japan
| | - Yuko Hashimoto
- Department of Diagnostic Pathology, Fukushima Medical University, Fukushima, Japan
| | - Kiyoshi Migita
- Department of Rheumatology, Fukushima Medical University, Fukushima, Japan
| | - Hiromasa Ohira
- Department of Gastroenterology, Fukushima Medical University, 1 Hikarigaoka, Fukushima, 960-1295, Japan
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Kawaguchi K, Masuda N, Tanaka S, Bando H, Nishimura T, Kadoya T, Yamanaka T, Imoto S, Velaga R, Tamura N, Aruga T, Maeshima Y, Takada M, Suzuki E, Ueno T, Ogawa S, Haga H, Ohno S, Morita S, Toi M. 1766P Longitudinal alteration of cytokine profile in the peripheral blood and clinical response for neoadjuvant chemotherapy in triple-negative breast cancer patients (translational research of the JBCRG-22 trial). Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1710] [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: 11/15/2022] Open
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7
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Kawashima S, Hattori A, Suzuki E, Matsubara K, Toki M, Kosaki R, Hasegawa Y, Nakabayashi K, Fukami M, Kagami M. Methylation status of genes escaping from X-chromosome inactivation in patients with X-chromosome rearrangements. Clin Epigenetics 2021; 13:134. [PMID: 34193245 PMCID: PMC8244138 DOI: 10.1186/s13148-021-01121-6] [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] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 06/22/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND X-chromosome inactivation (XCI) is a mechanism in which one of two X chromosomes in females is randomly inactivated in order to compensate for imbalance of gene dosage between sexes. However, about 15% of genes on the inactivated X chromosome (Xi) escape from XCI. The methylation level of the promoter region of the escape gene is lower than that of the inactivated genes. Dxz4 and/or Firre have critical roles for forming the three-dimensional (3D) structure of Xi. In mice, disrupting the 3D structure of Xi by deleting both Dxz4 and Firre genes led to changing of the escape genes list. To estimate the impact for escape genes by X-chromosome rearrangements, including DXZ4 and FIRRE, we examined the methylation status of escape gene promoters in patients with various X-chromosome rearrangements. RESULTS To detect the breakpoints, we first performed array-based comparative genomic hybridization and whole-genome sequencing in four patients with X-chromosome rearrangements. Subsequently, we conducted array-based methylation analysis and reduced representation bisulfite sequencing in the four patients with X-chromosome rearrangements and controls. Of genes reported as escape genes by gene expression analysis using human hybrid cells in a previous study, 32 genes showed hypomethylation of the promoter region in both male controls and female controls. Three patients with X-chromosome rearrangements had no escape genes with abnormal methylation of the promoter region. One of four patients with the most complicated rearrangements exhibited abnormal methylation in three escape genes. Furthermore, in the patient with the deletion of the FIRRE gene and the duplication of DXZ4, most escape genes remained hypomethylated. CONCLUSION X-chromosome rearrangements are unlikely to affect the methylation status of the promoter regions of escape genes, except for a specific case with highly complex rearrangements, including the deletion of the FIRRE gene and the duplication of DXZ4.
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Affiliation(s)
- Sayaka Kawashima
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan.,Department of Pediatrics, Tohoku University School of Medicine, 1-1 Seiryomachi, Aobaku, Sendai, Miyagi, 980-8574, Japan
| | - Atsushi Hattori
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan
| | - Erina Suzuki
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan
| | - Keiko Matsubara
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan
| | - Machiko Toki
- Department of Pediatrics, Hiratsuka City Hospital, 1-19-1 Minamihara, Hiratsuka, Kanagawa, 254-0065, Japan.,Department of Pediatrics, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Rika Kosaki
- Division of Medical Genetics, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan
| | - Yukihiro Hasegawa
- Division of Endocrinology and Metabolism, Tokyo Metropolitan Children's Medical Center, 2-8-29 Musashidai, Fuchu, Tokyo, 183-8561, Japan
| | - Kazuhiko Nakabayashi
- Department of Maternal Fetal Biology, National Research Institute for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan
| | - Maki Fukami
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan
| | - Masayo Kagami
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan.
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Temmoku J, Sato S, Matsumoto H, Fujita Y, Suzuki E, Yashiro-Furuya M, Matsuoka N, Asano T, Ito E, Nakatani-Enomoto S, Kobayashi H, Watanabe H, Hashimoto Y, Migita K. IgG4-Related Disease Complicated by Brain Parenchymal Lesions Successfully Treated with Corticosteroid Therapy: A Case Report. TOHOKU J EXP MED 2021; 251:161-168. [PMID: 32641642 DOI: 10.1620/tjem.251.161] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Immunoglobulin G4 (IgG4)-related disease (IgG4-RD) is distinguished by the infiltration of IgG4-positive plasma cells in a variety of tissues and organs including the pancreas, salivary glands, retroperitoneal lesions, kidney, and lymph nodes with elevated serum IgG4 levels. Even so, central nervous system (CNS) lesions such as brain parenchymal lesions associated with IgG4-RD are scarce. So far, only six cases of IgG4-RD in relation with brain parenchymal lesions have been described, with its characteristics still being not clear. Here we have detailed a case of IgG4-RD with brain parenchymal lesions and reviewed previously-reported cases of IgG4-RD with brain parenchymal lesions. A 62-year-old Japanese male suffering from lung silicosis was admitted to our hospital for abdominal discomfort and altered consciousness. He has shown no major neurologic abnormalities except for drowsiness, urinary retention, and fecal incontinence. Brain magnetic resonance imaging has shown scattered hyperintense signals in the brain parenchyma. The serum IgG4 levels were elevated and systemic lymph nodes were enlarged. Biopsy from inguinal lymph nodes has shown massive infiltration of IgG4-positive plasma cells: the ratio of IgG4-positive/IgG-positive plasma cells was nearly 100%. Based on clinical courses, images, laboratory data, and pathological findings, a diagnosis of IgG4-RD that was complicated by brain parenchymal lesions and sacral nerve disturbance was confirmed. The patient was then given methylprednisolone pulse therapy (1g for 3 days) succeeding oral prednisolone (1 mg per body weight). The clinical and radiological improvements together with steroid therapy proposed IgG4-RD to be the cause of the lesions.
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Affiliation(s)
- Jumpei Temmoku
- Department of Rheumatology, Fukushima Medical University School of Medicine
| | - Shuzo Sato
- Department of Rheumatology, Fukushima Medical University School of Medicine
| | - Haruki Matsumoto
- Department of Rheumatology, Fukushima Medical University School of Medicine
| | - Yuya Fujita
- Department of Rheumatology, Fukushima Medical University School of Medicine
| | - Erina Suzuki
- Department of Diagnostic Pathology, Fukushima Medical University School of Medicine
| | | | - Naoki Matsuoka
- Department of Rheumatology, Fukushima Medical University School of Medicine
| | - Tomoyuki Asano
- Department of Rheumatology, Fukushima Medical University School of Medicine
| | - Eiichi Ito
- Department of Neurology, Fukushima Medical University School of Medicine
| | | | - Hiroko Kobayashi
- Department of Rheumatology, Fukushima Medical University School of Medicine
| | - Hiroshi Watanabe
- Department of Rheumatology, Fukushima Medical University School of Medicine
| | - Yuko Hashimoto
- Department of Diagnostic Pathology, Fukushima Medical University School of Medicine
| | - Kiyoshi Migita
- Department of Rheumatology, Fukushima Medical University School of Medicine
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9
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Yamamoto H, Sugimoto S, Suzuki E, Tomioka Y, Shiotani T, Shimizu D, Matsubara K, Miyoshi K, Otani S, Okazaki M, Yamane M, Toyooka S. Combination of Neutrophil to Lymphocyte Ratio and Glasgow Prognostic Score Improves Prognostic Accuracy in Lung Transplantation: Validation of 9 Preoperative Prognostic Scoring Methods. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1007] [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: 11/26/2022] Open
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10
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Kyozuka H, Murata T, Fukuda T, Suzuki E, Yazawa R, Yasuda S, Kanno A, Yamaguchi A, Hashimoto Y, Fujimori K. Labor dystocia and risk of histological chorioamnionitis and funisitis: a study from a single tertiary referral center. BMC Pregnancy Childbirth 2021; 21:263. [PMID: 33784970 PMCID: PMC8011222 DOI: 10.1186/s12884-021-03719-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 03/12/2021] [Indexed: 11/26/2022] Open
Abstract
Background Intrauterine inflammation affects short- and long-term neonatal outcomes. Histological chorioamnionitis and funisitis are acute inflammatory responses in the fetal membranes and umbilical cord, respectively. Although labor dystocia includes a potential risk of intrauterine inflammation, the risk of histological chorioamnionitis and funisitis of labor dystocia has not been evaluated yet. This study aimed to examine the association between labor dystocia and risk of histological chorioamnionitis and funisitis. Methods In this retrospective cohort study, the cases who underwent histopathological examinations of the placenta and umbilical cord at Fukushima Medical University Hospital, Japan, between 2015 and 2020, were included. From the dataset, the pathological findings of the patients with labor dystocia and spontaneous preterm birth were reviewed. Based on the location of leukocytes, the inflammation in the placenta (histological chorioamnionitis) and umbilical cord (funisitis) was staged as 0–3. Multiple logistic regression analysis was performed to evaluate the risk of histological chorioamnionitis, histological chorioamnionitis stage ≥2, funisitis, and funisitis stage ≥2. Result Of 317 women who met the study criteria, 83 and 144 women had labor dystocia and spontaneous preterm birth, respectively, and 90 women were included as controls. Labor dystocia was a risk factor for histological chorioamnionitis (adjusted odds ratio, 6.3; 95% confidential interval, 1.9–20.5), histological chorioamnionitis stage ≥2 (adjusted odds ratio, 6.0; 95% confidence interval, 1.7–21.8), funisitis (adjusted odds ratio, 15.4; 95% confidence interval, 2.3–101.3), and funisitis stage ≥2 (adjusted odds ratio, 18.5; 95% confidence interval, 2.5–134.0). Spontaneous preterm birth was also a risk factor for histological chorioamnionitis (adjusted odds ratio, 3.7; 95% confidence interval, 1.7–7.8), histological chorioamnionitis stage ≥2 (adjusted odds ratio, 3.0; 95% confidence interval, 1.2–7.9), and funisitis (adjusted odds ratio, 6.6; 95% confidence interval, 1.4–30.6). However, the adjusted odds ratio was smaller in spontaneous preterm births than in labor dystocia. Conclusion Labor dystocia is a risk factor for severe histological chorioamnionitis and funisitis. Further studies are required to evaluate the effects of histological chorioamnionitis and funisitis on long-term neonatal outcomes.
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Affiliation(s)
- Hyo Kyozuka
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan.
| | - Tuyoshi Murata
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Toma Fukuda
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Erina Suzuki
- Department of Diagnostic Pathology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Riho Yazawa
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Shun Yasuda
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Aya Kanno
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Akiko Yamaguchi
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Yuko Hashimoto
- Department of Diagnostic Pathology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Keiya Fujimori
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan
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11
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Shima H, Tokuhiro E, Okamoto S, Nagamori M, Ogata T, Narumi S, Nakamura A, Izumi Y, Jinno T, Suzuki E, Fukami M. SOX10 Mutation Screening for 117 Patients with Kallmann Syndrome. J Endocr Soc 2021; 5:bvab056. [PMID: 34095692 PMCID: PMC8170842 DOI: 10.1210/jendso/bvab056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Indexed: 11/19/2022] Open
Abstract
Introduction Kallmann syndrome (KS) is a genetically heterogeneous condition characterized by hypogonadotropic hypogonadism (HH) and olfactory dysfunction. Although SOX10, a causative gene for Waardenburg syndrome (WS) and peripheral demyelinating neuropathy, central demyelination, WS, and Hirschsprung disease (PCWH) has previously been implicated in KS, the clinical significance of SOX10 variants as the cause of KS remains uncertain. Patients and Methods A total of 117 patients with KS underwent mutation screening of SOX10 and 14 other causative genes for KS/HH. Rare SOX10 variants were subjected to in silico and in vitro analyses. We also examined clinical data of the patients and their parents with SOX10 variants. Results Sequence analysis identified 2 heterozygous variants of SOX10 (c.1225G > T, p.Gly409* and c.475C > T, p.Arg159Trp) in patients 1–3, as well as in the parents of patients 1 and 3. The variants were assessed as pathogenic/likely pathogenic, according to the American College of Medical Genomics guidelines. Both variants lacked in vitro transactivating activity for the MITF promoter and exerted no dominant-negative effects. Patients 1–3 carried no pathogenic variants in other genes examined. The patients presented with typical KS, while such features were absent in the parents of patients 1 and 3. None of the 5 variant-positive individuals exhibited hypopigmentation, while 1 and 2 individuals exhibited complete and partial hearing loss, respectively. Conclusion These results provide evidence that SOX10 haploinsufficiency accounts for a small percentage of KS cases. SOX10 haploinsufficiency is likely to be associated with a broad phenotypic spectrum, which includes KS without other clinical features of WS/PCWH.
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Affiliation(s)
- Hirohito Shima
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, 157-8535 Tokyo, Japan
| | - Etsuro Tokuhiro
- Department of Pediatrics, Fujisawa City Hospital, 251-8550, Fujisawa, Japan
| | - Shingo Okamoto
- Okamoto Internal Medicine and Pediatrics Clinic, 633-0064, Sakurai, Japan
| | - Mariko Nagamori
- Department of Pediatrics, University of Toyama, 930-0194, Toyama, Japan
| | - Tsutomu Ogata
- Department of Pediatrics, Hamamatsu University School of Medicine, 431-3192, Hamamatsu, Japan
| | - Satoshi Narumi
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, 157-8535 Tokyo, Japan
| | - Akie Nakamura
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, 157-8535 Tokyo, Japan
| | - Yoko Izumi
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, 157-8535 Tokyo, Japan
| | - Tomoko Jinno
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, 157-8535 Tokyo, Japan
| | - Erina Suzuki
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, 157-8535 Tokyo, Japan
| | - Maki Fukami
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, 157-8535 Tokyo, Japan
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12
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Tamaoka S, Suzuki E, Hattori A, Ogata T, Fukami M, Katoh-Fukui Y. NDNF variants are rare in patients with congenital hypogonadotropic hypogonadism. Hum Genome Var 2021; 8:5. [PMID: 33531459 PMCID: PMC7854707 DOI: 10.1038/s41439-021-00137-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 11/04/2020] [Accepted: 01/04/2021] [Indexed: 11/26/2022] Open
Abstract
Although NDNF was recently reported as a novel causative gene for congenital hypogonadotropic hypogonadism (CHH), this conclusion has yet to be validated. In this study, we sequenced NDNF in 61 Japanese CHH patients. No variants, except for nine synonymous substitutions that appear to have no effect on splice-site recognition, were identified in NDNF coding exons or flanking intronic sequences. These results indicate the rarity of NDNF variants in CHH patients and highlight the genetic heterogeneity of CHH.
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Affiliation(s)
- Satoshi Tamaoka
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Erina Suzuki
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Atsushi Hattori
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Tsutomu Ogata
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Maki Fukami
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan.
| | - Yuko Katoh-Fukui
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
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13
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Yoshida T, Miyado M, Mikami M, Suzuki E, Kinjo K, Matsubara K, Ogata T, Akutsu H, Kagami M, Fukami M. Aneuploid rescue precedes X-chromosome inactivation and increases the incidence of its skewness by reducing the size of the embryonic progenitor cell pool. Hum Reprod 2020; 34:1762-1769. [PMID: 31398259 DOI: 10.1093/humrep/dez117] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 06/03/2019] [Accepted: 06/10/2019] [Indexed: 11/13/2022] Open
Abstract
STUDY QUESTION Do monosomy rescue (MR) and trisomy rescue (TR) in preimplantation human embryos affect other developmental processes, such as X-chromosome inactivation (XCI)? SUMMARY ANSWER Aneuploid rescue precedes XCI and increases the incidence of XCI skewness by reducing the size of the embryonic progenitor cell pools. WHAT IS KNOWN ALREADY More than half of preimplantation human embryos harbor aneuploid cells, some of which can be spontaneously corrected through MR or TR. XCI in females is an indispensable process, which is predicted to start at the early-blastocyst phase. STUDY DESIGN, SIZE, DURATION We examined the frequency of XCI skewness in young females who carried full uniparental disomy (UPD) resulting from MR or TR/gamete complementation (GC). The results were statistically analyzed using a theoretical model in which XCI involves various numbers of embryonic progenitor cells. PARTICIPANTS/MATERIALS, SETTING, METHODS We studied 39 children and young adults ascertained by imprinting disorders. XCI ratios were determined by DNA methylation analysis of a polymorphic locus in the androgen receptor gene. We used Bayesian approach to assess the probability of the occurrence of extreme XCI skewness in the MR and TR/GC groups using a theoretical model of 1-12 cell pools. MAIN RESULTS AND THE ROLE OF CHANCE A total of 12 of 39 individuals (31%) showed skewed XCI. Extreme skewness was observed in 3 of 15 MR cases (20%) and 1 of 24 TR/GC cases (4.2%). Statistical analysis indicated that XCI in the MR group was likely to have occurred when the blastocyst contained three or four euploid embryonic progenitor cells. The estimated size of the embryonic progenitor cell pools was approximately one-third or one-fourth of the predicted size of normal embryos. The TR/GC group likely had a larger pool size at the onset of XCI, although the results remained inconclusive. LIMITATIONS, REASONS FOR CAUTION This is an observational study and needs to be validated by experimental analyses. WIDER IMPLICATIONS OF THE FINDINGS This study provides evidence that the onset of XCI is determined by an intrinsic clock, irrespectively of the number of embryonic progenitor cells. Our findings can also be applied to individuals without UPD or imprinting disorders. This study provides a clue to understand chromosomal and cellular dynamics in the first few days of human development, their effects on XCI skewing and the possible implications for the expression of X-linked diseases in females. STUDY FUNDING/COMPETING INTEREST(S) This study was supported by the Grants-in-aid for Scientific Research on Innovative Areas (17H06428) and for Scientific Research (B) (17H03616) from Japan Society for the Promotion of Science (JSPS), and grants from Japan Agency for Medical Research and Development (AMED) (18ek0109266h0002 and 18ek0109278h0002), National Center for Child Health and Development and Takeda Science Foundation. The authors declare no conflict of interest. TRIAL REGISTRATION NUMBER Not applicable.
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Affiliation(s)
- T Yoshida
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, 157-8535 Tokyo, Japan.,Department of Advanced Pediatric Medicine, Tohoku University School of Medicine, 157-8535 Tokyo, Japan
| | - M Miyado
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, 157-8535 Tokyo, Japan
| | - M Mikami
- Division of Biostatistics, Department of Data Management, Center for Clinical Research, National Center for Child Health and Development, 157-8535 Tokyo, Japan
| | - E Suzuki
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, 157-8535 Tokyo, Japan
| | - K Kinjo
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, 157-8535 Tokyo, Japan
| | - K Matsubara
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, 157-8535 Tokyo, Japan
| | - T Ogata
- Department of Pediatrics, Hamamatsu University School of Medicine, 431-3125 Hamamatsu, Japan
| | - H Akutsu
- Department of Reproductive Medicine, National Research Institute for Child Health and Development, 157-8535 Tokyo, Japan
| | - M Kagami
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, 157-8535 Tokyo, Japan
| | - M Fukami
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, 157-8535 Tokyo, Japan
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14
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Bando H, Masuda N, Yamanaka T, Kadoya T, Takahashi M, Nagai S, Ohtani S, Aruga T, Suzuki E, Kikawa Y, Yasojima H, Kasai H, Ishiguro H, Kawabata H, Morita S, Haga H, Kataoka T, Uozumi R, Ohno S, Toi M. 163MO Randomized phase II study of eribulin-based neoadjuvant chemotherapy for triple-negative primary breast cancer patients stratified by homologous recombination deficiency status (JBCRG-22). Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.285] [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: 11/26/2022] Open
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15
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Suzuki E, Kobori Y, Katsumi M, Ushijima K, Uchiyama T, Okada H, Miyado M, Fukami M. Copy-number analysis of Y-linked loci in young men with non-obstructive azoospermia: Implications for the rarity of early onset mosaic loss of chromosome Y. Reprod Med Biol 2020; 19:178-181. [PMID: 32273824 PMCID: PMC7138941 DOI: 10.1002/rmb2.12321] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 01/24/2020] [Accepted: 02/11/2020] [Indexed: 11/07/2022] Open
Abstract
PURPOSE Mosaic loss of chromosome Y (mLOY) is a common feature in elderly men. If mLOY can also occur in young men, it may lead to spermatogenic failure due to loss of spermatogenic genes. Indeed, previous studies detected the 45,X/46,XY karyotype in a few young men with spermatogenic failure. The present study aimed to clarify the frequency of cryptic mLOY in reproductive-aged men with spermatogenic failure. METHODS We studied 198 men at ages 24-55 years who presented with etiology-unknown non-obstructive azoospermia. Prior this study, these patients underwent G-banding analysis for 20 leukocytes and were found to have 46,XY karyotype. We analyzed copy numbers of chromosome Y in blood cells by using semi-quantitative multiplex PCR for AMELY/AMELX, array-based comparative genomic hybridization (CGH) for the AMELY locus, and droplet digital PCR for SRY, USP9Y, and UTY. RESULTS Multiplex PCR showed borderline low AMELY/AMELX ratios in three patients. However, for the three patients, CGH excluded deletion of the AMELY locus, and droplet digital PCR suggested preserved copy numbers of all tested loci. CONCLUSION This study highlights the rarity of leukocyte mLOY in reproductive-aged men with spermatogenic failure. In addition, our data imply that standard karyotyping is sufficient to screen early onset mLOY.
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Affiliation(s)
- Erina Suzuki
- Department of Molecular EndocrinologyNational Research Institute for Child Health and DevelopmentTokyoJapan
| | - Yoshitomo Kobori
- Department of UrologyDokkyo Medical University Saitama Medical CenterKoshigayaJapan
| | - Momori Katsumi
- Department of Molecular EndocrinologyNational Research Institute for Child Health and DevelopmentTokyoJapan
- Department of NCCHD Child Health and DevelopmentGraduate SchoolTokyo Medical and Dental UniversityTokyoJapan
| | - Kikumi Ushijima
- Department of Molecular EndocrinologyNational Research Institute for Child Health and DevelopmentTokyoJapan
| | - Toru Uchiyama
- Department of Human GeneticsNational Research Institute for Child Health and DevelopmentTokyoJapan
| | - Hiroshi Okada
- Department of UrologyDokkyo Medical University Saitama Medical CenterKoshigayaJapan
| | - Mami Miyado
- Department of Molecular EndocrinologyNational Research Institute for Child Health and DevelopmentTokyoJapan
| | - Maki Fukami
- Department of Molecular EndocrinologyNational Research Institute for Child Health and DevelopmentTokyoJapan
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16
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Kinjo K, Yoshida T, Kobori Y, Okada H, Suzuki E, Ogata T, Miyado M, Fukami M. Random X chromosome inactivation in patients with Klinefelter syndrome. Mol Cell Pediatr 2020; 7:1. [PMID: 31974854 PMCID: PMC6979883 DOI: 10.1186/s40348-020-0093-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 01/02/2020] [Indexed: 11/28/2022] Open
Abstract
Background X chromosome inactivation (XCI) is an indispensable process in the development of human female embryos. Reportedly, XCI occurs when a blastocyst contains 10–12 embryonic progenitor cells. To date, it remains unclear whether XCI ratios are normally preserved in Klinefelter syndrome (KS) patients with 47,XXY karyotype. Methods We examined XCI ratios in 18 KS patients through DNA methylation analysis for the polymorphic trinucleotide locus in the AR gene. The results of the KS patients were compared to previous data from healthy young women. Results XCI ratios in KS patients followed a normal distribution. Skewed XCI was observed in two patients, one of whom exhibited extremely skewed XCI. The frequencies of skewed and extremely skewed XCI in the KS cohort were comparable to those in healthy women. Conclusion This study confirmed the rarity of skewed XCI in KS patients. These results indicate that the presence of a supernumerary X chromosome during the cleavage and early blastocyst stages does not affect the developmental tempo of embryos. Our data deserve further validation.
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Affiliation(s)
- Kenichi Kinjo
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan.,Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Tomoko Yoshida
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan.,Department of Advanced Pediatric Medicine, Tohoku University School of Medicine, Tokyo, Japan
| | - Yoshitomo Kobori
- Department of Urology, Saitama Medical Center, Dokkyo Medical University, Koshigaya, Japan
| | - Hiroshi Okada
- Department of Urology, Saitama Medical Center, Dokkyo Medical University, Koshigaya, Japan
| | - Erina Suzuki
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Tsutomu Ogata
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Mami Miyado
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Maki Fukami
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan.
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17
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Sasaki H, Kotaki T, Fujimori A, Tsukamoto T, Suzuki E, Oishi Y, Shibasaki Y. Excellent performance of aromatic polyguanamines induced by multiple hydrogen bondable tetraazacalix[2]arene[2]-triazine ring in their main chain. RSC Adv 2020; 10:1361-1370. [PMID: 35494688 PMCID: PMC9047533 DOI: 10.1039/c9ra09136j] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 11/05/2019] [Accepted: 12/19/2019] [Indexed: 11/21/2022] Open
Abstract
A series of poly(guanamine) (c-PG)s containing tetraazacalix[2]arene[2]-triazine (mPDA2CyC2) were successfully prepared by solution polycondensation of mPDA2CyC2 with various aromatic diamines in an aprotic organic solvent with a lithium chloride additive (5 wt%) at 150 °C for 6 hours. The number-average molecular weights (Mn)s of these c-PG polymers reached up to 31 500, with a relatively broad molecular weight distribution (Mw/Mn) of 5.3. They showed good solubility in aprotic organic solvents, such as N-methylpyrrolidone and N,N-dimethylacetamide at a concentration of 2 mg mL−1. The glass transition temperatures (Tg) of the c-PG polymers were in the range 359 °C–392 °C, approximately 160 °C higher than those of counterpart polymers (i.e., with no aza-calixarene-based PG (l-PG)). The coefficients of thermal expansion (CTEs) of the c-PG polymers were 29.7–48.1 ppm K−1 (at 100 °C–150 °C), much lower than those of l-PG samples, i.e., 59.1–85.1 ppm K−1. Transparent and almost colorless c-PG films were successfully prepared by a solution casting method, showing maximum tensile strength (σS), modulus (Eγ), and elongation at break (Eb) values of 151 MPa, 6.3 GPa, and 4.4%, respectively, for the c-PG polymer from mPDA2CyC2 and 4,4′-oxydianiline monomers. The corresponding l-PG film exhibited σS, Eγ, and Eb values of just 76 MPa, 5.4 GPa, and 1.6%, respectively. These outstanding thermal and mechanical properties of the c-PG polymers can be attributed to their multiple hydrogen bonding interaction between mPDA2CyC2 residues in the polymer backbone. This interaction was identified by infrared spectroscopy measurements at the broad absorption band around 3000–3400 cm−1. Poly(guanamine)s containing tetraazacalix[2]arene[2]triazine ring within the polymer main-chain show outstanding thermal and mechanical properties arisen from the multiple-hydrogen bond.![]()
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Affiliation(s)
- H Sasaki
- Department of Chemistry & Biological Sciences, Faculty of Science & Engineering, Iwate University 4-3-5 Ueda Morioka Iwate 020-8551 Japan
| | - T Kotaki
- Department of Chemistry & Biological Sciences, Faculty of Science & Engineering, Iwate University 4-3-5 Ueda Morioka Iwate 020-8551 Japan
| | - A Fujimori
- Graduate School of Science and Engineering, Saitama University 255 Shimo-okubo, Sakura-ku Saitama 338-8570 Japan
| | - T Tsukamoto
- Department of Chemistry & Biological Sciences, Faculty of Science & Engineering, Iwate University 4-3-5 Ueda Morioka Iwate 020-8551 Japan
| | - E Suzuki
- Department of Chemistry & Biological Sciences, Faculty of Science & Engineering, Iwate University 4-3-5 Ueda Morioka Iwate 020-8551 Japan
| | - Y Oishi
- Department of Chemistry & Biological Sciences, Faculty of Science & Engineering, Iwate University 4-3-5 Ueda Morioka Iwate 020-8551 Japan
| | - Y Shibasaki
- Department of Chemistry & Biological Sciences, Faculty of Science & Engineering, Iwate University 4-3-5 Ueda Morioka Iwate 020-8551 Japan
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18
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Azuma H, Ogawa H, Suzuki E, Akechi T. Intraclass correlations of seizure duration by wavelet transform, sample entropy, and visual determination in electroconvulsive therapy. Neuropsychopharmacol Rep 2020; 40:102-106. [PMID: 31891221 PMCID: PMC7292219 DOI: 10.1002/npr2.12095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 12/12/2019] [Accepted: 12/15/2019] [Indexed: 11/25/2022] Open
Abstract
Although electroconvulsive therapy seizure duration has been shown to have limited relevance to efficacy, seizure duration remains important for clinically valid stimulus efficiency. There has been no report on seizure duration using sample entropy with Thymatron (Somatics, Inc), which is widely used in Japan. Furthermore, wavelet transform analysis is also suitable for a seizure because of the wide range of dominant frequencies. Therefore, in this study with Thymatron, the intraclass correlations of seizure duration determined by sample entropy, wavelet transform, and visual determination were investigated to determine whether these methods were applicable for clinical use. Wavelet transform, sample entropy, and the human rater had high intraclass correlations for seizure duration. The present results indicate that wavelet transform and sample entropy can be useful in the clinical electroconvulsive therapy setting, and they may also be suitable for clinical research into the mechanisms of the generalized tonic‐clonic seizures related to the efficacy of electroconvulsive therapy. The intraclass correlations of electroconvulsive therapy‐induced seizure duration determined by sample entropy, wavelet transform, and visual determination were investigated to determine whether these methods were applicable for clinical use. sample entropy, wavelet transform, and the human rater had high intraclass correlations for the seizure durations. The present results indicate that sample entropy and wavelet transform can be useful in the clinical electroconvulsive therapy setting.![]()
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Affiliation(s)
- Hideki Azuma
- Department of Psychiatry and Cognitive-Behavioral Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Haruka Ogawa
- Department of Psychiatry and Cognitive-Behavioral Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Erina Suzuki
- Department of Psychiatry and Cognitive-Behavioral Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Tatsuo Akechi
- Department of Psychiatry and Cognitive-Behavioral Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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Ogushi K, Hattori A, Suzuki E, Shima H, Izawa M, Yagasaki H, Horikawa R, Uetake K, Umezawa A, Ishii T, Muroya K, Namba N, Tanaka T, Hirano Y, Yamamoto H, Soneda S, Matsubara K, Kagami M, Miyado M, Fukami M. DNA Methylation Status of SHOX-Flanking CpG Islands in Healthy Individuals and Short Stature Patients with Pseudoautosomal Copy Number Variations. Cytogenet Genome Res 2019; 158:56-62. [PMID: 31158835 DOI: 10.1159/000500468] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/21/2018] [Indexed: 11/19/2022] Open
Abstract
SHOX resides in the short arm pseudoautosomal region (PAR1) of the sex chromosomes and escapes X inactivation. SHOX haploinsufficiency underlies idiopathic short stature (ISS) and Leri-Weill dyschondrosteosis (LWD). A substantial percentage of cases with SHOX haploinsufficiency arise from pseudoautosomal copy number variations (CNVs) involving putative enhancer regions of SHOX. Our previous study using peripheral blood samples showed that some CpG dinucleotides adjacent to SHOX exon 1 were hypomethylated in a healthy woman and methylated in a woman with gross X chromosomal rearrangements. However, it remains unknown whether submicroscopic pseudoautosomal CNVs cause aberrant DNA methylation of SHOX-flanking CpG islands. In this study, we examined the DNA methylation status of SHOX-flanking CpG islands in 50 healthy individuals and 10 ISS/LWD patients with pseudoautosomal CNVs. In silico analysis detected 3 CpG islands within the 20-kb region from the translation start site of SHOX. Pyrosequencing and bisulfite sequencing of genomic DNA samples revealed that these CpG islands were barely methylated in peripheral blood cells and cultured chondrocytes of healthy individuals, as well as in peripheral blood cells of ISS/LWD patients with pseudoautosomal CNVs. These results, in conjunction with our previous findings, indicate that the DNA methylation status of SHOX-flanking CpG islands can be affected by gross X-chromosomal abnormalities, but not by submicroscopic CNVs in PAR1. Such CNVs likely disturb SHOX expression through DNA methylation-independent mechanisms, which need to be determined in future studies.
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Tsubaki S, Matsuzawa T, Fujii S, Suzuki E, Kanamori H, Hoshino T, Hosoda S, Wada Y. In situ Raman monitoring of dielectric-heating-enhanced freeze-drying under different electromagnetic wave frequencies. RSC Adv 2019; 9:9001-9005. [PMID: 35517651 PMCID: PMC9062093 DOI: 10.1039/c9ra00981g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 02/06/2019] [Accepted: 03/05/2019] [Indexed: 11/22/2022] Open
Abstract
We studied the effect of dielectric heating on the enhancement of freeze-drying by electromagnetic waves (EMWs) under different frequencies: 2.45 GHz microwaves (MWs), and 27 and 200 MHz radio frequencies (RFs). The irradiation with RFs, particularly at 27 MHz, reduced the duration of freeze-drying by 67%. We further analysed the water structure by in situ Raman spectroscopy during freeze-drying under EMWs. The phase transition from ice to water occurred soon after starting irradiation by MWs at 2.45 GHz, while the ice phase was almost maintained at an RF of 27 MHz. We studied the effect of dielectric heating on the enhancement of freeze-drying by electromagnetic waves (EMWs) under different frequencies: 2.45 GHz microwaves (MWs), and 27 and 200 MHz radio frequencies (RFs).![]()
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Affiliation(s)
- S Tsubaki
- School of Materials and Chemical Technology, Tokyo Institute of Technology Ookayama 2-12-1 E4-3, Meguro Tokyo 152-8550 Japan
| | - T Matsuzawa
- School of Materials and Chemical Technology, Tokyo Institute of Technology Ookayama 2-12-1 E4-3, Meguro Tokyo 152-8550 Japan
| | - S Fujii
- School of Materials and Chemical Technology, Tokyo Institute of Technology Ookayama 2-12-1 E4-3, Meguro Tokyo 152-8550 Japan .,Department of Information and Communication Systems Engineering, Okinawa National College of Technology 905 Henoko, Nago-shi Okinawa 905-2192 Japan
| | - E Suzuki
- School of Materials and Chemical Technology, Tokyo Institute of Technology Ookayama 2-12-1 E4-3, Meguro Tokyo 152-8550 Japan
| | - H Kanamori
- Japan Aerospace Exploration Agency 3-1-1 Yoshinodai, Chuo-ku Sagamihara Kanagawa 252-5210 Japan
| | - T Hoshino
- Japan Aerospace Exploration Agency 3-1-1 Yoshinodai, Chuo-ku Sagamihara Kanagawa 252-5210 Japan
| | - S Hosoda
- Japan Aerospace Exploration Agency 3-1-1 Yoshinodai, Chuo-ku Sagamihara Kanagawa 252-5210 Japan
| | - Y Wada
- School of Materials and Chemical Technology, Tokyo Institute of Technology Ookayama 2-12-1 E4-3, Meguro Tokyo 152-8550 Japan
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Suzuki E, Sasada S, Sueoka S, Masumoto N, Goda N, Kajitani K, Emi A, Haruta R, Kadoya T, Kataoka T, Okada M. Abstract P6-02-09: Diagnostic performance of dedicated breast PET for the prediction of pathological response after neoadjuvant chemotherapy. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p6-02-09] [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: 11/16/2022]
Abstract
Abstract
Background: Neoadjuvant chemotherapy (NAC) is a standard treatment for operable breast cancer. However, imaging methods for evaluating treatment response have not been established. Previous studies reported that ring-type dedicated breast positron emission tomography (DbPET) detected residual tumors following NAC more accurately than whole-body PET/CT. This study assessed DbPET parameters for predicting pathological complete response (pCR) in patients with breast cancer.
Patients and Methods: Among patients with breast cancer who underwent surgery after NAC, 61 were examined using ring-type DbPET before and after NAC. The maximum standardized uptake values (SUVmax) and tumor-to-normal-tissue ratio (TNR) were calculated before and after NAC (pre-SUVmax, pre-TNR, post-SUVmax and post-TNR, respectively). Moreover, the reduction rates (ΔSUVmax and ΔTNR) were determined. pCR was defined as complete remission of breast cancer.
Results: The median patient age was 52 years. Forty patients (65.6%) were estrogen receptor (ER)-positive, whereas 25 patients (41.0%) were HER2-positive. Fifteen patients (24.6%) achieved pCR after NAC. The calculated values for the parameters of DbPET are summarized in Table 1. The most promising parameters for predicting pCR were ΔSUVmax (area under the curve [AUC]: 0.506) and post-TNR (AUC: 0.640). Although neither of these two parameters reflected the pathological response to NAC in patients with ER-positive disease, post-TNR showed the highest AUC (i.e., AUC: 0.750) for pCR in patients with ER-negative disease. The sensitivity and specificity of post-TNR in the ER-positive group were 85.7% and 39.4%, respectively. In the ER-negative group, these values were 100% and 58.3%, respectively [Table 2]
Table 1.Diagnostic performance of dedicated breast positron-emission tomography for the prediction of pathological complete response after neoadjuvant chemotherapyParameterspCR Median (IQR)Non-pCR Median (IQR)PAUC (95% CI)Pre-SUVmax14.8 (9.2–17.7)14.4 (10.7–19.8)0.6040.454 (0.285–0.624)Post-SUVmax1.8(1.5–2.1)2.0 (1.6–3.4)0.2370.603 (0.460–0.746)ΔSUVmax (%)87.32 (81.5–91.8)88.6(82.8–91.8)0.9540.506 (0.329–0.682)Pre-TNR8.0 (5.3–9.2)7.3(5.9–10.2)0.7570.472 (0.297–0.647)Post-TNR1.7(1.0–1.1)1.2 (1.0–2.4)0.0980.640 (0.506–0.774)ΔTNR (%)87.3 (78.3–89.1)79.8 (62.7–86.7)0.1130.638 (0.472–0.803)pCR, pathological complete response; IQR, interquartile range; AUC, area under the curve; CI, confidence interval, SUV, standardized uptake value; TNR, tumor-to-normal-tissue ratio.Table 2.Diagnostic accuracy of post-TNR according to estrogen receptor status Sensitivity (%)Specificity (%)Accuracy (%)PPV (%)NPV (%)ER-positive85.739.447.523.192.9ER-negative10058.375.061.5100TNR, tumor-to-normal-tissue ratio; ER, estrogen receptor; PPV, positive predictive value; NPV, negative predictive value
Conclusion: In DbPET, ΔSUVmax and post-TNR were shown to be promising parameters for predicting pathological response to NAC. Post-TNR provided the highest sensitivity for predicting pCR in patients with ER-negative breast cancer.
Citation Format: Suzuki E, Sasada S, Sueoka S, Masumoto N, Goda N, Kajitani K, Emi A, Haruta R, Kadoya T, Kataoka T, Okada M. Diagnostic performance of dedicated breast PET for the prediction of pathological response after neoadjuvant chemotherapy [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P6-02-09.
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Affiliation(s)
- E Suzuki
- Hiroshima University, Hiroshima City, Japan
| | - S Sasada
- Hiroshima University, Hiroshima City, Japan
| | - S Sueoka
- Hiroshima University, Hiroshima City, Japan
| | - N Masumoto
- Hiroshima University, Hiroshima City, Japan
| | - N Goda
- Hiroshima University, Hiroshima City, Japan
| | - K Kajitani
- Hiroshima University, Hiroshima City, Japan
| | - A Emi
- Hiroshima University, Hiroshima City, Japan
| | - R Haruta
- Hiroshima University, Hiroshima City, Japan
| | - T Kadoya
- Hiroshima University, Hiroshima City, Japan
| | - T Kataoka
- Hiroshima University, Hiroshima City, Japan
| | - M Okada
- Hiroshima University, Hiroshima City, Japan
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Suzuki E, Shima H, Kagami M, Soneda S, Tanaka T, Yatsuga S, Nishioka J, Oto Y, Kamiya T, Naiki Y, Ogata T, Fujisawa Y, Nakamura A, Kawashima S, Morikawa S, Horikawa R, Sano S, Fukami M. (Epi)genetic defects of MKRN3 are rare in Asian patients with central precocious puberty. Hum Genome Var 2019; 6:7. [PMID: 30675365 PMCID: PMC6341071 DOI: 10.1038/s41439-019-0039-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 09/05/2018] [Revised: 11/29/2018] [Accepted: 12/10/2018] [Indexed: 12/13/2022] Open
Abstract
We sequenced MKRN3, the major causative gene of central precocious puberty in Western countries, in 24 Japanese or Chinese patients and examined the DNA methylation and copy-number statuses of this gene in 19 patients. We identified no (epi)genetic defects except for one previously reported mutation. These results, together with reports from Korea, indicate that MKRN3 defects are rare in Asian populations. The ethnic differences likely reflect Western country-specific founder mutations and the rarity of de novo mutations.
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Affiliation(s)
- Erina Suzuki
- 1Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Hirohito Shima
- 1Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Masayo Kagami
- 1Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Shun Soneda
- 2Department of Pediatrics, St. Marianna University School of Medicine, Kawasaki, Japan
| | | | - Shuichi Yatsuga
- 4Department of Pediatrics and Child Health, Kurume University School of Medicine, Kurume, Japan
| | - Junko Nishioka
- 4Department of Pediatrics and Child Health, Kurume University School of Medicine, Kurume, Japan
| | - Yuji Oto
- 5Department of Pediatrics, Saitama Medical Center, Dokkyo Medical University, Saitama, Japan
| | - Toshiya Kamiya
- Department of Pediatrics, JA Mie Kouseiren Matsusaka Central General Hospital, Matsusaka, Japan
| | - Yasuhiro Naiki
- 7Division of Endocrinology and Metabolism, National Center for Child Health and Development, Tokyo, Japan
| | - Tsutomu Ogata
- 8Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Yasuko Fujisawa
- 8Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Akie Nakamura
- 1Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Sayaka Kawashima
- 1Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Shuntaro Morikawa
- 9Department of Pediatrics, Hokkaido University School of Medicine, Sapporo, Japan
| | - Reiko Horikawa
- 7Division of Endocrinology and Metabolism, National Center for Child Health and Development, Tokyo, Japan
| | | | - Maki Fukami
- 1Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
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Masumoto N, Kadoya T, Suzuki E, Sueoka S, Goda N, Sasada S, Emi A, Haruta R, Kataoka T, Okada M. Intratumoral heterogeneity on dedicated breast positron emission tomography before chemotherapy predicts the outcome of neoadjuvant chemotherapy in breast cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy271.271] [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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24
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Sueoka S, Sasada S, Suzuki E, Goda N, Kajitani K, Emi A, Masumoto N, Kadoya T, Haruta R, Kataoka T, Okada M. Molecular subtyping of breast cancer by dedicated breast PET. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy270.198] [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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25
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Sasada S, Shiroma N, Suzuki E, Sueoka S, Goda N, Kajitani K, Emi A, Masumoto N, Kadoya T, Haruta R, Kataoka T, Arihiro K, Okada M. Relationship between ring-type dedicated breast PET and tumor-infiltrating lymphocytes in early breast cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy269.154] [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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26
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Suzuki E, Kotake T, Nishimura T, Yamaguchi A, Pu F, Toi M. Patritumab (anti-HER3 antibody) augments anti-tumor immune response of adoptive transfer of autologous activated T cells for patient-derived xenograft models of breast cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy268.004] [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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27
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Nakatsukasa K, Kikawa Y, Kotake T, Yamagami K, Tsuyuki S, Yamashiro H, Suwa H, Sugie T, Okuno T, Kato H, Takahara S, Nakayama I, Ogura N, Moriguchi Y, Takata M, Suzuki E, Yoshibayashi H, Ishiguro H, Taguchi T, Toi M. Prospective cohort study of real world chemotherapy sequence for metastatic breast cancer (KBCRN A001: E-SPEC study). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy272.305] [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: 11/12/2022] Open
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28
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Kato T, Uemura Y, Naya M, Momose M, Matsumoto N, Suzuki E, Hida S, Nakajima T, Yamauchi T, Tamaki N. P3657Impact of renal dysfunction on choice of diagnostic imaging, treatment strategy, and outcomes in patients with stable angina: a report from J-COMPASS study. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3657] [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: 11/12/2022] Open
Affiliation(s)
- T Kato
- Tazuke Kofukai Medical Research Institute, Kitano Hospital, Cardiovascular Center, Osaka, Japan
| | - Y Uemura
- University of Tokyo, Biostatistics Division, Clinical Research Support Center, Tokyo, Japan
| | - M Naya
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - M Momose
- Tokyo Women's Medical University, Department of Diagnostic Imaging and Nuclear Medicine, Tokyo, Japan
| | - N Matsumoto
- Nihon University, Department of Cardiology, Tokyo, Japan
| | - E Suzuki
- Hokkaido University, Department of Diagnostic Imaging and Nuclear Medicine, Sapporo, Japan
| | - S Hida
- Tokyo Medical University, Department of cardiology, Tokyo, Japan
| | - T Nakajima
- Saitama Cardiovascular and Respiratory Center, Kumagaya, Japan
| | - T Yamauchi
- Japan Community Health care Organization Sagamino Hospital, Cardiovascular medicine, Sagamihara, Japan
| | - N Tamaki
- Hokkaido University, Department of Diagnostic Imaging and Nuclear Medicine, Sapporo, Japan
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29
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Fukami M, Suzuki E, Igarashi M, Miyado M, Ogata T. Gain-of-function mutations in G-protein-coupled receptor genes associated with human endocrine disorders. Clin Endocrinol (Oxf) 2018; 88:351-359. [PMID: 29029377 DOI: 10.1111/cen.13496] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [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: 08/22/2017] [Revised: 10/08/2017] [Accepted: 10/09/2017] [Indexed: 11/28/2022]
Abstract
The human genome encodes more than 700 G-protein-coupled receptors (GPCRs), many of which are involved in hormone secretion. To date, more than 100 gain-of-function (activating) mutations in at least ten genes for GPCRs, in addition to several loss-of-function mutations, have been implicated in human endocrine disorders. Previously reported gain-of-function GPCR mutations comprise various missense substitutions, frameshift mutations, intragenic inframe deletions and copy-number gains. Such mutations appear in both germline and somatic tumour cells, and lead to various hormonal abnormalities reflecting excessive receptor activity. Phenotypic consequences of these mutations include distinctive endocrine syndromes, as well as relatively common hormonal abnormalities. Such mutations encode hyperfunctioning receptors with increased constitutive activity, broadened ligand specificity, increased ligand sensitivity and/or delayed receptor desensitization. Furthermore, recent studies proposed a paradoxical gain-of-function mechanism caused by inactive GPCR mutants. Molecular diagnosis of GPCR activating mutations serves to improve the clinical management of mutation-positive patients. This review aims to introduce new aspects regarding gain-of-function mutations in GPCR genes associated with endocrine disorders.
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Affiliation(s)
- Maki Fukami
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Erina Suzuki
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Maki Igarashi
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Mami Miyado
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Tsutomu Ogata
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
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Masumoto N, Kadoya T, Nishina M, Kimura Y, Suzuki E, Sueoka S, Goda N, Sasada S, Kajitani K, Emi A, Haruta R, Kataoka T, Okada M. Abstract P5-02-03: Evaluation of pathological malignancy grade and neoplastic progress of breast cancer using dedicated breast positron emission tomography. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p5-02-03] [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: 11/16/2022]
Abstract
Abstract
Background: Dedicated breast positron emission tomography (DbPET)provides detailed high resolution images of the breast and enables quantitative assessment using standard uptake values (SUVs). We aimed to determine whether DbPET can predict the pathological malignancy grade and neoplastic progress of breast cancer compared with whole body (WB) PET.
Methods: We investigated 196 consecutive patients with invasive breast cancerwho underwent concurrent Db- and WB-PET from January 2016 to March 2017. All Db- and WB-PET were quantified based on SUVs. We also investigated pathological features of breast cancer who had a ring-like uptake (RU) without central FDG accumulation on DbPET.
Results:
The associations between the SUVs for DB- and WB-PET and the pathological factors in breast cancerCharacteristicSUV WBPETDbPET Mean ± SDpMean ± SDpall3.6 ± 3.4 9.4±7.9 Tumor size ≤2.0 cm2.2±1.6<0.0016.5±5.2<0.001>2.0 cm5.5±4.1 13.3±9.2 LN Negative3.1±3.3<0.0018.4±7.8<0.001Positive4.9±3.2 11.8±7.7 NG 1 or 22.4±2.1<0.0016.6±5.9<0.00135.1±4.0 12.7±8.7 Ki67 < 201.8±1.1<0.0015.2±3.3<0.001≥ 204.4±3.7 11.4±8.6 ER positive3.4±3.30.028.8±7.60.006negative5.2±3.6 13.5±8.6 HER-2 positive4.6±3.10.0911.8±7.60.04negative3.4±3.4 9.0±7.9 Sub type vs Lumnal A vs Lumnal ALuminal A1.8±1.1 5.2±3.3 Luminal B4.0±3.8<0.00110.1±8.5<0.001HER24.6±3.1<0.00111.8±7.6<0.001Triple negative5.3±3.8<0.00113.8±9.2<0.001
summarizes the association between SUVs for Db- and WB-PET and pathological factors inbreast cancer.SUVs on PET were significantly higher for the tumor size of >2.0 cm than for tumor size ≤2.0 cm (p<0.001), for LN-positive than for LN-negative (p<0.001), for NG3 than for NG1-NG2 (p<0.001), for higher Ki67 expression than for lower Ki67 expression (p<0.001), and for ER-negative than for ER-positive (WBPET, p=0.02; DbPET, p=0.006). SUVs were significantly lower for Luminal A than for Luminal B, HER2, and triple-negative cancer (p<0.001 for all three).SUVs for DbPET was significantly higher for HER2-positive than for HER2-negative (p=0.02).
The association between SUVs for breast cancer with and without RU on DbPETCharacteristicRU(-), nRU(+), npall17323 Tumor size ≤2.0 cm1095<0.001>2.0 cm6418 LN Negative1299<0.001Positive4414 NG 1 or 210070.0237316 Ki67 < 206130.03≥ 2011220 ER positive152190.49negative214 HER-2 positive2620.38negative14721 Sub type vs Lumnal ALuminal A493 Luminal B84150.02HER22620.81Triple negative1430.04
summarizes the association between SUVs for breast cancer with and without RU on DbPET. SUVs for breast cancer with RU on DbPET were significantly higher for the tumor size of >2.0 cm than for tumor size ≤2.0 cm, for LN -positive than for LN-negative (p<0.001), for NG3 than for NG1-2 (p=0.02), and for higher Ki67 expression than for lowerKi67 expression (p=0.03). SUVs were significantly lower for Luminal A than for Luminal B (p=0.02) and triple-negative cancer (p=0.04).
Conclusions: SUVs for DbPET were equal or superiorto WBPET in predicting the pathological malignancy grade and neoplastic progress in tumors. Furthermore, the presence of RU on DbPET can provide excellent predictive value for high-grade malignancy and might help to determine appropriate therapeutic strategies.
Citation Format: Masumoto N, Kadoya T, Nishina M, Kimura Y, Suzuki E, Sueoka S, Goda N, Sasada S, Kajitani K, Emi A, Haruta R, Kataoka T, Okada M. Evaluation of pathological malignancy grade and neoplastic progress of breast cancer using dedicated breast positron emission tomography [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P5-02-03.
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Affiliation(s)
- N Masumoto
- Hiroshima University, Hiroshima; Hiroshima University Hospital, Hiroshima
| | - T Kadoya
- Hiroshima University, Hiroshima; Hiroshima University Hospital, Hiroshima
| | - M Nishina
- Hiroshima University, Hiroshima; Hiroshima University Hospital, Hiroshima
| | - Y Kimura
- Hiroshima University, Hiroshima; Hiroshima University Hospital, Hiroshima
| | - E Suzuki
- Hiroshima University, Hiroshima; Hiroshima University Hospital, Hiroshima
| | - S Sueoka
- Hiroshima University, Hiroshima; Hiroshima University Hospital, Hiroshima
| | - N Goda
- Hiroshima University, Hiroshima; Hiroshima University Hospital, Hiroshima
| | - S Sasada
- Hiroshima University, Hiroshima; Hiroshima University Hospital, Hiroshima
| | - K Kajitani
- Hiroshima University, Hiroshima; Hiroshima University Hospital, Hiroshima
| | - A Emi
- Hiroshima University, Hiroshima; Hiroshima University Hospital, Hiroshima
| | - R Haruta
- Hiroshima University, Hiroshima; Hiroshima University Hospital, Hiroshima
| | - T Kataoka
- Hiroshima University, Hiroshima; Hiroshima University Hospital, Hiroshima
| | - M Okada
- Hiroshima University, Hiroshima; Hiroshima University Hospital, Hiroshima
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Takada M, Takeuchi M, Suzuki E, Sato F, Matsumoto Y, Torii M, Sakita-Kawaguchi N, Nakayama Y, Okuda T, Nishino H, Seo S, Hatano E, Toi M. Abstract PD2-07: Real-time navigation for sentinel lymph node biopsy in breast cancer patients using projection mapping with indocyanine green fluorescence. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-pd2-07] [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: 11/16/2022]
Abstract
Abstract
Background)
Sentinel lymph node (SLN) biopsy using indocyanine green fluorescence (fICG) method showed equal or better identification rate compared with blue dye or radioisotope (RI) method. In the fICG method, lymphatic vessels which drain into the SLNs can be seen through skin or subcutaneous tissue using near infrared camera (Photodynamic Eye®: PDE), and we can easily find the SLNs. However, whenever we observe the fluorescence images, we have to hold the PDE, turn off the operating light, and look at a monitor because fluorescence images cannot be seen directly. Medical imaging projection system (MIPS) is a new device which detects fluorescent emission from the organ and projects their images on the location of the fluorescence emission (Panasonic Connected Solutions Company, Japan). Projected images can be adjusted following the body movement or deformation of the organ. Therefore, MIPS could provide an option for real-time navigation for the SLN biopsy. The aim of this study was to evaluate the clinical utility of the MIPS.
Patients and methods)
Patients with clinically node-negative primary breast cancer underwent the fICG SLN biopsy using MIPS. Primary endpoint was identification rate of the fICG method using MIPS. At first, the study was conducted as an interventional study because the MIPS was the unapproved medical device. After approval of the MIPS, this study was conducted as an observational study. The study protocol was approved by the institutional review board at Kyoto University Hospital. All patients provided informed consent to participate in this study.
Results)
Between March 2016 and May 2017, 39 patients (40 procedures) underwent the fICG method SLN biopsy using MIPS. The median age was 55 years (range 32–74 years), and the median body mass index was 20.4 kg/m2 (range 17.7–27.7 kg/m2). About half had tumor stage T1 (58%) and 8 (20.0%) had DCIS. 8 procedures (20%) were performed after preoperative systemic therapy (PST). As MIPS itself can illuminate the operating field, SLN biopsy using MIPS was successfully performed without operating light in all procedures. At least one SLN was detected using MIPS for all procedures and the identification rate was 100% (95% CI: 91–100%). Median number of SLNs detected by MIPS was 3 (range 1–9) for all procedures, and 3 (range 2–8) for procedures after PST. Two pathologically positive SLNs and one SLN which included isolated tumor cells were detected by MIPS. In 25 procedures, RI was also used. 62 of 97 SLNs detected by MIPS (64%) were also detected by RI. However, no SLNs were detected only by RI.
Conclusions)
Although we still may not be able to avoid RI method because 25/40 (62.5%) procedures required the combined use of RI method, the fICG methods SLN biopsy using MIPS, which showed comparable identification rate of SLN with the conventional methods, could be useful tool with a view of allowing us to perform a real-time navigation surgery.
Acknowledgements)
This study was supported by Acceleration Transformative research for Medical innovation, Japan Agency for Medical Research and Development (AMED).
Citation Format: Takada M, Takeuchi M, Suzuki E, Sato F, Matsumoto Y, Torii M, Sakita-Kawaguchi N, Nakayama Y, Okuda T, Nishino H, Seo S, Hatano E, Toi M. Real-time navigation for sentinel lymph node biopsy in breast cancer patients using projection mapping with indocyanine green fluorescence [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr PD2-07.
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Affiliation(s)
- M Takada
- Kyoto University Hospital, Kyoto, Japan; Hyogo College of Medicine, Hyogo, Japan
| | - M Takeuchi
- Kyoto University Hospital, Kyoto, Japan; Hyogo College of Medicine, Hyogo, Japan
| | - E Suzuki
- Kyoto University Hospital, Kyoto, Japan; Hyogo College of Medicine, Hyogo, Japan
| | - F Sato
- Kyoto University Hospital, Kyoto, Japan; Hyogo College of Medicine, Hyogo, Japan
| | - Y Matsumoto
- Kyoto University Hospital, Kyoto, Japan; Hyogo College of Medicine, Hyogo, Japan
| | - M Torii
- Kyoto University Hospital, Kyoto, Japan; Hyogo College of Medicine, Hyogo, Japan
| | - N Sakita-Kawaguchi
- Kyoto University Hospital, Kyoto, Japan; Hyogo College of Medicine, Hyogo, Japan
| | - Y Nakayama
- Kyoto University Hospital, Kyoto, Japan; Hyogo College of Medicine, Hyogo, Japan
| | - T Okuda
- Kyoto University Hospital, Kyoto, Japan; Hyogo College of Medicine, Hyogo, Japan
| | - H Nishino
- Kyoto University Hospital, Kyoto, Japan; Hyogo College of Medicine, Hyogo, Japan
| | - S Seo
- Kyoto University Hospital, Kyoto, Japan; Hyogo College of Medicine, Hyogo, Japan
| | - E Hatano
- Kyoto University Hospital, Kyoto, Japan; Hyogo College of Medicine, Hyogo, Japan
| | - M Toi
- Kyoto University Hospital, Kyoto, Japan; Hyogo College of Medicine, Hyogo, Japan
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Sueoka S, Masumoto N, Nishina M, Kimura Y, Suzuki E, Goda N, Sasada S, Kajitani K, Emi A, Haruta R, Kadoya T, Kataoka T, Okada M. Abstract P6-03-08: Detection ability of dedicated breast positron emission tomography for small-sized breast cancer. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p6-03-08] [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: 11/16/2022]
Abstract
Abstract
Background: Whole body (WB) 18F-fluorodeoxyglucose positron emission tomography (PET) has a relatively poor spatial resolution (>1 cm), which limits the capability to detect small lesions. Therefore, small-sized breast cancers (≤1 cm) may not be visible on WBPET. To overcome these limitations, dedicated breast PET (DbPET) has been developed to improve spatial resolution. DbPET enables detailed high-resolution images within the breast. We aimed to determine whether DbPET can detect small-sized breast cancer compared to WBPET.
Methods: We investigated 203 consecutive patients (217 tumors) (T1–3, N0–3a, M0) with breast cancer who underwent concurrent DbPET and WBPET between January 2016 and March 2017. All DbPET and WBPET images were semi-quantified based on standard uptake values. The diagnostic performance of each scanner was assessed in DbPET and WBPET. Tumors were classified based on pathological classification as follows: Tis, ductal carcinoma in situ (DCIS); T1a, ≤0.5 cm; T1b, 0.5–1 cm; and T1c, 1–2 cm; T2, 2–5 cm; T3, >5 cm. The sensitivities of DbPET and WBPET were compared in each size group.
Results: Table 1 shows the detection rate of breast cancer in WBPET and DbPET
The detection rate of breast cancer in WB- and Db-PET DbPETWBPETpTumor sizeDetection (-) n(%)Detection (+) n(%)Detection (-) n(%)Detection (+) n(%) Tis6(14.6)35(85.4)18(43.9)23(56.1)0.0030T1a2(8)23(92)7(28)18(72)0.0594T1b2(6.5)29(93.5)10(32.3)21(67.7)0.0077T1c5(8.2)56(91.8)11(18)50(82)0.1038T20(0)57(100)1(1.8)56(98.2)0.2375T30(0)2(100)0(0)2(100)-total15(6.9)202(93.1)47(21.7)170(78.3)<0.0001
. The overall detection rate in DBPET [93.1% (202/217)] was significantly higher than that of WBPET [78.3% (170/217)] (P < 0.001). For smaller tumors, DbPET was more sensitive than WBPET: Tis (85.4% vs. 56.1%), T1a (92% vs. 72%), T1b (93.5% vs. 67.7%), T1c (91.8% vs. 82%), T2 (100% vs. 98.2%), and T3 (100% vs. 100%). The sensitivity of DbPET was significantly higher than that of WBPET in Tis (P = 0.003) and T1b (P = 0.008) and tended to be higher than that of WBPET in T1a (P = 0.059). Conversely, no significant differences were observed in T1c (P = 0.103) and T2 (P = 0.238).
Conclusion: The imaging sensitivity of DbPET was higher than that of WBPET. DbPET showed significant sensitivity in DCIS and tumors ≤1 cm, which is a weak point for WBPET. DbPET may serve as a new diagnostic modality to detect small-sized breast cancer.
Citation Format: Sueoka S, Masumoto N, Nishina M, Kimura Y, Suzuki E, Goda N, Sasada S, Kajitani K, Emi A, Haruta R, Kadoya T, Kataoka T, Okada M. Detection ability of dedicated breast positron emission tomography for small-sized breast cancer [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P6-03-08.
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Affiliation(s)
- S Sueoka
- Hiroshima University Hospital, Hiroshima, Japan
| | - N Masumoto
- Hiroshima University Hospital, Hiroshima, Japan
| | - M Nishina
- Hiroshima University Hospital, Hiroshima, Japan
| | - Y Kimura
- Hiroshima University Hospital, Hiroshima, Japan
| | - E Suzuki
- Hiroshima University Hospital, Hiroshima, Japan
| | - N Goda
- Hiroshima University Hospital, Hiroshima, Japan
| | - S Sasada
- Hiroshima University Hospital, Hiroshima, Japan
| | - K Kajitani
- Hiroshima University Hospital, Hiroshima, Japan
| | - A Emi
- Hiroshima University Hospital, Hiroshima, Japan
| | - R Haruta
- Hiroshima University Hospital, Hiroshima, Japan
| | - T Kadoya
- Hiroshima University Hospital, Hiroshima, Japan
| | - T Kataoka
- Hiroshima University Hospital, Hiroshima, Japan
| | - M Okada
- Hiroshima University Hospital, Hiroshima, Japan
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Ishiyama A, Muramatsu K, Uchino S, Sakai C, Matsushima Y, Makioka N, Ogata T, Suzuki E, Komaki H, Sasaki M, Mimaki M, Goto YI, Nishino I. NDUFAF3
variants that disrupt mitochondrial complex I assembly may associate with cavitating leukoencephalopathy. Clin Genet 2018; 93:1103-1106. [DOI: 10.1111/cge.13215] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 01/11/2018] [Accepted: 01/12/2018] [Indexed: 01/29/2023]
Affiliation(s)
- A. Ishiyama
- Department of Child Neurology; National Center of Neurology and Psychiatry (NCNP), National Center Hospital; Tokyo Japan
- Department of Neuromuscular Research; National Institute of Neuroscience, NCNP; Tokyo Japan
- Department of Pharmacology, Interdisciplinary Graduate School of Medicine and Engineering; University of Yamanashi; Yamanashi Japan
| | - K. Muramatsu
- Department of Pediatrics; Gunma University Graduate School of Medicine; Gunma Japan
- Department of Pediatrics; Jichi Medical University; Tochigi Japan
| | - S. Uchino
- Department of Mental Retardation and Birth Defect Research; National Institute of Neuroscience, NCNP; Tokyo Japan
- Department of Pediatrics, Faculty of Medicine; Teikyo University; Tokyo Japan
| | - C. Sakai
- Department of Mental Retardation and Birth Defect Research; National Institute of Neuroscience, NCNP; Tokyo Japan
| | - Y. Matsushima
- Department of Mental Retardation and Birth Defect Research; National Institute of Neuroscience, NCNP; Tokyo Japan
| | - N. Makioka
- Department of Pediatrics; Gunma University Graduate School of Medicine; Gunma Japan
| | - T. Ogata
- Department of Pediatrics; Gunma University Graduate School of Medicine; Gunma Japan
| | - E. Suzuki
- Department of Pediatrics; Gunma University Graduate School of Medicine; Gunma Japan
| | - H. Komaki
- Department of Child Neurology; National Center of Neurology and Psychiatry (NCNP), National Center Hospital; Tokyo Japan
| | - M. Sasaki
- Department of Child Neurology; National Center of Neurology and Psychiatry (NCNP), National Center Hospital; Tokyo Japan
| | - M. Mimaki
- Department of Mental Retardation and Birth Defect Research; National Institute of Neuroscience, NCNP; Tokyo Japan
- Department of Pediatrics, Faculty of Medicine; Teikyo University; Tokyo Japan
| | - Y.-I. Goto
- Department of Mental Retardation and Birth Defect Research; National Institute of Neuroscience, NCNP; Tokyo Japan
| | - I. Nishino
- Department of Neuromuscular Research; National Institute of Neuroscience, NCNP; Tokyo Japan
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Suzuki E, Bo R, Sue K, Awano H, Ogata T, Narumi S, Kagami M, Sano S, Fukami M. A de novo 50-bp GNAS Intragenic Duplication in a Patient with Pseudohypoparathyroidism Type 1a. Cytogenet Genome Res 2018; 153:125-130. [PMID: 29320763 DOI: 10.1159/000485644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/12/2017] [Indexed: 11/19/2022] Open
Abstract
Germline intragenic mutations in the GNAS locus result in pseudohypoparathyroidism type 1a (PHP1a) and related conditions. Nearly half of the previously reported GNAS intragenic mutations were structural variants, including 3 tandem duplications of 12-25 bp. However, the precise mutation spectrum and the genomic basis of GNAS structural variants remain to be clarified. Here, we report a de novo 50-bp tandem duplication in GNAS (c.723_772dup50, p.Glu259Leufs*29) identified in a patient with typical clinical features of PHP1a. The mutant transcript was predicted to undergo mRNA decay or encode a nonfunctional protein. The 2 breakpoints of the duplication shared a 1-bp microhomology but were not associated with long homology or nucleotide stretches. We also examined the breakpoint structures of 3 previously reported GNAS duplications and found that 1 had a structure similar to that of our case, while the remaining 2 had blunt-ended breakpoints without microhomologies. In silico analyses revealed that the GNAS-flanking region was not enriched with repeats, palindromes, noncanonical DNA motifs, or GC content. This study expands the mutation spectrum of GNAS and provides the first indication that GNAS intragenic structural variants are induced by multiple processes, including nonhomologous end-joining and/or microhomology-mediated break-induced replication, independently of known rearrangement-inducing DNA features.
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Affiliation(s)
- Erina Suzuki
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
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35
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Suzuki E, Maeda T, Chiba T, Ogasawara S, Ooka Y, Kato N. Baseline sum of longest diameter in target lesions by response evaluation criteria in solid tumor as a prognostic factor in patients with advanced hepatocellylar carcinoma receiving sorafenib treatment. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx660.046] [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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36
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Hattori M, Tamura K, Mukai H, Miyoshi Y, Masuda N, Suzuki E, Ishiguro H, Ohtani S, Hara F, Shimamoto T, Yamamoto K, Ding Y, Aktan G, Karantza V, Iwata H. Phase 2 study of pembrolizumab for metastatic triple-negative breast cancer (mTNBC): Japanese subgroup results of KEYNOTE 086. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx654.001] [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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37
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Hattori A, Katoh-Fukui Y, Nakamura A, Matsubara K, Kamimaki T, Tanaka H, Dateki S, Adachi M, Muroya K, Yoshida S, Ida S, Mitani M, Nagasaki K, Ogata T, Suzuki E, Hata K, Nakabayashi K, Matsubara Y, Narumi S, Tanaka T, Fukami M. Next generation sequencing-based mutation screening of 86 patients with idiopathic short stature. Endocr J 2017; 64:947-954. [PMID: 28768959 DOI: 10.1507/endocrj.ej17-0150] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [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] [Indexed: 11/23/2022] Open
Abstract
Although mutations in ACAN, FGFR3, NPR2, and SHOX typically lead to skeletal dysplasia, and mutations in GHRHR, GH1, GHR, STAT5B, IGF1, IGFALS, and IGF1R usually underlie hormonal defects of the growth hormone (GH)-insulin-like growth factor 1 (IGF1) axis, such mutations have also been identified in patients with idiopathic short stature (ISS). Of these, SHOX abnormalities are known to account for a certain percentage of ISS cases, whereas the frequency of mutations in the other 10 genes in ISS cohorts remains unknown. Here, we performed next-generation sequencing-based mutation screening of the 10 genes in 86 unrelated Japanese ISS patients without SHOX abnormalities. We searched for rare protein-altering variants. The functional significance of the identified variants was assessed by in silico analyses. Consequently, we identified 18 heterozygous rare variants in 19 patients, including four probable damaging variants in ACAN, six pathogenicity-unknown variants in FGFR3, GHRHR, GHR, and IGFALS, and eight possible benign variants. Pathogenic variants in NPR2, GH1, and IGF1 were absent from our cohort. Unlike previously reported patients with ACAN mutations, our four patients with ACAN variants manifested non-specific short stature with age-appropriate or mildly delayed bone ages, and had parents of normal stature. These results indicate that ACAN mutations can underlie ISS without characteristic skeletal features, and that such mutations are possibly associated with de novo occurrence or low penetrance. In addition, our data imply that mutations in FGFR3, NPR2, and GH-IGF1 axis genes play only limited roles in the etiology of ISS.
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MESH Headings
- Aggrecans/chemistry
- Aggrecans/genetics
- Aggrecans/metabolism
- Amino Acid Substitution
- Carrier Proteins/chemistry
- Carrier Proteins/genetics
- Carrier Proteins/metabolism
- Child
- Child, Preschool
- Cohort Studies
- Computational Biology
- Databases, Genetic
- Expert Systems
- Female
- Genetic Association Studies
- Genetic Predisposition to Disease
- Genetic Testing
- Glycoproteins/chemistry
- Glycoproteins/genetics
- Glycoproteins/metabolism
- Growth Disorders/blood
- Growth Disorders/genetics
- Growth Disorders/metabolism
- Growth Disorders/physiopathology
- Heterozygote
- High-Throughput Nucleotide Sequencing
- Humans
- Japan
- Male
- Mutation
- Receptor, Fibroblast Growth Factor, Type 3/chemistry
- Receptor, Fibroblast Growth Factor, Type 3/genetics
- Receptor, Fibroblast Growth Factor, Type 3/metabolism
- Receptor, IGF Type 1
- Receptors, Neuropeptide/chemistry
- Receptors, Neuropeptide/genetics
- Receptors, Neuropeptide/metabolism
- Receptors, Pituitary Hormone-Regulating Hormone/chemistry
- Receptors, Pituitary Hormone-Regulating Hormone/genetics
- Receptors, Pituitary Hormone-Regulating Hormone/metabolism
- Receptors, Somatomedin/chemistry
- Receptors, Somatomedin/genetics
- Receptors, Somatomedin/metabolism
- STAT5 Transcription Factor/chemistry
- STAT5 Transcription Factor/genetics
- STAT5 Transcription Factor/metabolism
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Affiliation(s)
- Atsushi Hattori
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo 157-8535, Japan
- Department of Advanced Pediatric Medicine, Tohoku University School of Medicine, Tokyo 157-8535, Japan
| | - Yuko Katoh-Fukui
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo 157-8535, Japan
| | - Akie Nakamura
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo 157-8535, Japan
| | - Keiko Matsubara
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo 157-8535, Japan
| | - Tsutomu Kamimaki
- Department of Pediatrics, Shizuoka City Shimizu Hospital, Shizuoka 424-8636, Japan
| | - Hiroyuki Tanaka
- Department of Pediatrics, Okayama Saiseikai General Hospital, Okayama 700-8511, Japan
| | - Sumito Dateki
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8501, Japan
| | - Masanori Adachi
- Department of Endocrinology and Metabolism, Kanagawa Children's Medical Center, Yokohama 232-8555, Japan
| | - Koji Muroya
- Department of Endocrinology and Metabolism, Kanagawa Children's Medical Center, Yokohama 232-8555, Japan
| | - Shinobu Yoshida
- Department of Pediatrics, Omihachiman Community Medical Center, Omihachiman 523-0082, Japan
| | - Shinobu Ida
- Department of Gastroenterology and Endocrinology, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi 594-1101, Japan
| | - Marie Mitani
- Department of Pediatrics, Shizuoka City Shimizu Hospital, Shizuoka 424-8636, Japan
| | - Keisuke Nagasaki
- Division of Pediatrics, Department of Homeostatic Regulation and Development, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8520, Japan
| | - Tsutomu Ogata
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan
| | - Erina Suzuki
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo 157-8535, Japan
| | - Kenichiro Hata
- Department of Maternal-Fetal Biology, National Research Institute for Child Health and Development, Tokyo 157-8535, Japan
| | - Kazuhiko Nakabayashi
- Department of Maternal-Fetal Biology, National Research Institute for Child Health and Development, Tokyo 157-8535, Japan
| | - Yoichi Matsubara
- Department of Advanced Pediatric Medicine, Tohoku University School of Medicine, Tokyo 157-8535, Japan
- Institute director, National Research Institute for Child Health and Development, Tokyo 157-8535, Japan
| | - Satoshi Narumi
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo 157-8535, Japan
| | | | - Maki Fukami
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo 157-8535, Japan
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38
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Hisanaga Y, Suzuki E, Aoki H, Sato M, Saito A, Saito A, Azuma T. Effect of the combined use of enamel matrix derivative and atelocollagen sponge scaffold on osteoblastic differentiation of mouse induced pluripotent stem cells in vitro. J Periodontal Res 2017; 53:240-249. [PMID: 29044527 DOI: 10.1111/jre.12511] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/07/2017] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND OBJECTIVE Induced pluripotent stem cells (iPSCs) are a candidate cell source in periodontal regenerative therapy. Enamel matrix derivative (EMD) has been shown to regenerate periodontal tissues, and atelocollagen sponge (ACS) is considered a suitable scaffold or carrier for growth factors. This study aimed to investigate the effect of combined use of EMD and an ACS scaffold on cell behaviors and differentiation of mouse iPSCs (miPSCs) in vitro. MATERIAL AND METHODS Following embryonic body formation from miPSCs, dissociated cells (miPS-EB-derived cells) were seeded onto ACS with or without EMD, and cultured in osteoblast differentiation medium. Scanning electron microscopy and histological analyses were used to assess cell morphology and infiltration within the ACS. Cell viability (metabolism) was determined using an MTS assay, and expression of mRNA of osteoblastic differentiation markers was assessed by quantitative RT -PCR. Alkaline phosphatase (ALP) staining intensity and activity were evaluated. Mineralization was assessed by von Kossa staining, and calcium content was quantitated using the methylxylenol blue method. RESULTS By 24 hours after seeding, miPS-EB-derived cells in both the EMD and control groups had attached to and infiltrated the ACS scaffold. Scanning electron microscopy images revealed that by day 14, many cytoplasmic protrusions and extracellular deposits, suggestive of calcified matrix, were present in the EMD group. There was a time-dependent increase in cell viability up to day 3, but no difference between groups was observed at any time point. The levels expressed of ALP and osterix genes were significantly higher in the EMD group than in the control group. Expression of runt-related transcription factor 2 was increased in the EMD group compared with the control group on day 7. EMD upregulated the expression of bone sialoprotein and osteopontin on day 14, whereas expression of osteocalcin was lower at all time points. The staining intensity and activity of ALP were higher in the EMD group than in the control group. Mineralization levels and calcium contents were significantly higher in the EMD group throughout the observation period. CONCLUSION These data suggest that combining ACS with EMD increases levels of osteoblastic differentiation and mineralization in miPS-EB-derived cells, compared with ACS used alone.
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Affiliation(s)
- Y Hisanaga
- Department of Periodontology, Tokyo Dental College, Tokyo, Japan
| | - E Suzuki
- Department of Periodontology, Tokyo Dental College, Tokyo, Japan
| | - H Aoki
- Department of Periodontology, Tokyo Dental College, Tokyo, Japan
| | - M Sato
- Department of Periodontology, Tokyo Dental College, Tokyo, Japan
| | - A Saito
- Department of Biochemistry, Tokyo Dental College, Tokyo, Japan.,Oral Health Science Center, Tokyo Dental College, Tokyo, Japan
| | - A Saito
- Department of Periodontology, Tokyo Dental College, Tokyo, Japan.,Oral Health Science Center, Tokyo Dental College, Tokyo, Japan
| | - T Azuma
- Department of Biochemistry, Tokyo Dental College, Tokyo, Japan.,Oral Health Science Center, Tokyo Dental College, Tokyo, Japan
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39
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Masuda N, Ohtani S, Takano T, Inoue K, Suzuki E, Nakamura R, Bando H, Ito Y, Ishida K, Yamanaka T, Kuroi K, Yasojima H, Kasai H, Takasuka T, Sakurai T, Kataoka T, Morita S, Ohno S, Toi M. Neoadjuvant therapy with trastuzumab emtansine and pertuzumab in patients with HER2-positive primary breast cancer (A randomized, phase 2 study; JBCRG-20). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx362.010] [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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40
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Shima H, Ishii A, Wada Y, Kizawa J, Yokoi T, Azuma N, Matsubara Y, Suzuki E, Nakamura A, Narumi S, Fukami M. SOX2 nonsense mutation in a patient clinically diagnosed with non-syndromic hypogonadotropic hypogonadism. Endocr J 2017; 64:813-817. [PMID: 28659543 DOI: 10.1507/endocrj.ej17-0078] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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] [Indexed: 11/23/2022] Open
Abstract
Hypogonadotropic hypogonadism (HH) is a genetically heterogeneous condition that occurs either as an isolated disorder or as a component of congenital malformation syndromes. SOX2 is a causative gene of syndromic HH characterized by anophthalmia, microphthalmia, or coloboma and other neurological defects such as epilepsy. To date, the causal relationship between SOX2 abnormalities and non-syndromic HH remains speculative. Here, we identified a nonsense mutation of SOX2 in a male patient clinically diagnosed with non-syndromic HH. The patient had epilepsy but no additional clinical features. Ophthalmological examination revealed no abnormalities except for decreased thickness of the retinal nerve fiber layer. Audiometry showed mild sensorineural hearing impairment of both ears. Hormonal evaluation suggested isolated gonadotropin deficiency. Next-generation sequencing-based mutation screening of 13 major causative genes for HH identified a p.Lys35∗ mutation in SOX2 and excluded pathogenic mutations in other tested genes. The p.Lys35∗ mutation appeared to encode a non-functioning SOX2 protein that lacks 283 of 317 amino acids. The SOX2 mutation was absent in the maternal DNA sample, while a paternal sample was unavailable for sequence analysis. These results expand the clinical consequences of SOX2 haploinsufficiency to include non-syndromic HH. Systematic mutation screening using a next-generation sequencer and detailed evaluation of nonspecific ocular/neurological features may help identify SOX2 mutation-positive individuals among HH patients.
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Affiliation(s)
- Hirohito Shima
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo 157-8535, Japan
- Department of Advanced Pediatric Medicine, Tohoku University School of Medicine, Tokyo 157-8535, Japan
| | - Akira Ishii
- Department of Pediatrics, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan
| | - Yasunori Wada
- Department of Pediatrics, Iwate Medical University School of Medicine, Morioka 020-8505, Japan
| | - Junya Kizawa
- Department of Ophthalmology, Iwate Medical University School of Medicine, Morioka 020-8505, Japan
| | - Tadashi Yokoi
- Department of Ophthalmology and Laboratory for Visual Science, National Center for Child Health and Development, Tokyo 157-8535, Japan
| | - Noriyuki Azuma
- Department of Ophthalmology and Laboratory for Visual Science, National Center for Child Health and Development, Tokyo 157-8535, Japan
| | - Yoichi Matsubara
- Department of Advanced Pediatric Medicine, Tohoku University School of Medicine, Tokyo 157-8535, Japan
- Institute director, National Research Institute for Child Health and Development, Tokyo 157-8535, Japan
| | - Erina Suzuki
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo 157-8535, Japan
| | - Akie Nakamura
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo 157-8535, Japan
| | - Satoshi Narumi
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo 157-8535, Japan
| | - Maki Fukami
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo 157-8535, Japan
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41
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Fukami M, Suzuki E, Izumi Y, Torii T, Narumi S, Igarashi M, Miyado M, Katsumi M, Fujisawa Y, Nakabayashi K, Hata K, Umezawa A, Matsubara Y, Yamauchi J, Ogata T. Paradoxical gain-of-function mutant of the G-protein-coupled receptor PROKR2 promotes early puberty. J Cell Mol Med 2017; 21:2623-2626. [PMID: 28338294 PMCID: PMC5618689 DOI: 10.1111/jcmm.13146] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 02/02/2017] [Indexed: 01/14/2023] Open
Abstract
The human genome encodes ~750 G‐protein‐coupled receptors (GPCRs), including prokineticin receptor 2 (PROKR2) involved in the regulation of sexual maturation. Previously reported pathogenic gain‐of‐function mutations of GPCR genes invariably encoded aberrant receptors with excessive signal transduction activity. Although in vitro assays demonstrated that an artificially created inactive mutant of PROKR2 exerted paradoxical gain‐of‐function effects when co‐transfected with wild‐type proteins, such a phenomenon has not been observed in vivo. Here, we report a heterozygous frameshift mutation of PROKR2 identified in a 3.5‐year‐old girl with central precocious puberty. The mutant mRNA escaped nonsense‐mediated decay and generated a GPCR lacking two transmembrane domains and the carboxyl‐terminal tail. The mutant protein had no in vitro signal transduction activity; however, cells co‐expressing the mutant and wild‐type PROKR2 exhibited markedly exaggerated ligand‐induced Ca2+ responses. The results indicate that certain inactive PROKR2 mutants can cause early puberty by enhancing the functional property of coexisting wild‐type proteins. Considering the structural similarity among GPCRs, this paradoxical gain‐of‐function mechanism may underlie various human disorders.
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Affiliation(s)
- Maki Fukami
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Erina Suzuki
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Yoko Izumi
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Tomohiro Torii
- Department of Pharmacology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Satoshi Narumi
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Maki Igarashi
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Mami Miyado
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Momori Katsumi
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Yasuko Fujisawa
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Kazuhiko Nakabayashi
- Department of Maternal-Fetal Biology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Kenichiro Hata
- Department of Maternal-Fetal Biology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Akihiro Umezawa
- Department of Reproductive Biology, Center for Regenerative Medicine, National Institute for Child Health and Development, Tokyo, Japan
| | - Yoichi Matsubara
- National Research Institute for Child Health and Development, Tokyo, Japan
| | - Junji Yamauchi
- Department of Pharmacology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Tsutomu Ogata
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan.,Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
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42
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Ito S, Hinoshita M, Suzuki E, Ojika M, Wakamatsu K. Tyrosinase-Catalyzed Oxidation of the Leukoderma-Inducing Agent Raspberry Ketone Produces (E)-4-(3-Oxo-1-butenyl)-1,2-benzoquinone: Implications for Melanocyte Toxicity. Chem Res Toxicol 2017; 30:859-868. [PMID: 28219012 DOI: 10.1021/acs.chemrestox.7b00006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The exposure of human skin to 4-(4-hydroxyphenyl)-2-butanone (raspberry ketone, RK) is known to cause chemical/occupational leukoderma. RK has a structure closely related to 4-(4-hydroxyphenyl)-2-butanol (rhododendrol), a skin whitening agent that was found to cause leukoderma in the skin of consumers in 2013. Rhododendrol is a good substrate for tyrosinase and causes a tyrosinase-dependent cytotoxicity to melanocytes, cells that are responsible for skin pigmentation. Therefore, it is expected that RK exerts its cytotoxicity to melanocytes through the tyrosinase-catalyzed oxidation to cytotoxic o-quinones. The results of this study demonstrate that the oxidation of RK by mushroom tyrosinase rapidly produces 4-(3-oxobutyl)-1,2-benzoquinone (RK-quinone), which is converted within 10-20 min to (E)-4-(3-oxo-1-butenyl)-1,2-benzoquinone (DBL-quinone). These quinones were identified as their corresponding catechols after reduction by ascorbic acid. RK-quinone and DBL-quinone quantitatively bind to the small thiol N-acetyl-l-cysteine to form thiol adducts and can also bind to the thiol protein bovine serum albumin through its cysteinyl residue. DBL-quinone is more reactive than RK-quinone, as judged by their half-lives (6.2 min vs 10.5 min, respectively), and decays rapidly to form an oligomeric pigment (RK-oligomer). The RK-oligomer can oxidize GSH to GSSG with a concomitant production of hydrogen peroxide, indicating its pro-oxidant activity, similar to that of the RD-oligomer. These results suggest that RK is cytotoxic to melanocytes through the binding of RK-derived quinones to thiol proteins and the pro-oxidant activity of the RK-oligomer.
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Affiliation(s)
- Shosuke Ito
- Department of Chemistry, Fujita Health University School of Health Sciences , Toyoake, Aichi 470-1192, Japan
| | - Maki Hinoshita
- Department of Chemistry, Fujita Health University School of Health Sciences , Toyoake, Aichi 470-1192, Japan
| | - Erina Suzuki
- Department of Chemistry, Fujita Health University School of Health Sciences , Toyoake, Aichi 470-1192, Japan
| | - Makoto Ojika
- Department of Applied Molecular Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University , Nagoya 464-8601, Japan
| | - Kazumasa Wakamatsu
- Department of Chemistry, Fujita Health University School of Health Sciences , Toyoake, Aichi 470-1192, Japan
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Nagai K, Shima H, Kamimura M, Kanno J, Suzuki E, Ishiguro A, Narumi S, Kure S, Fujiwara I, Fukami M. Xp22.31 Microdeletion due to Microhomology-Mediated Break-Induced Replication in a Boy with Contiguous Gene Deletion Syndrome. Cytogenet Genome Res 2017; 151:1-4. [PMID: 28253503 DOI: 10.1159/000458469] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/06/2016] [Indexed: 11/19/2022] Open
Abstract
The Xp22.31 region is characterized by a low frequency of interspersed repeats and a low GC content. Submicroscopic deletions at Xp22.31 involving STS and ANOS1 (alias KAL1) underlie X-linked ichthyosis and Kallmann syndrome, respectively. Of the known microdeletions at Xp22.31, a common approximately 1.5-Mb deletion encompassing STS was ascribed to nonallelic homologous recombination, while 2 ANOS1-containing deletions were attributed to nonhomologous end-joining. However, the genomic bases of other microdeletions within the Xp22.31 region remain to be elucidated. Here, we identified a 2,735,696-bp deletion encompassing STS and ANOS1 in a boy with X-linked ichthyosis and Kallmann syndrome. The breakpoints of the deletion were located within Alu repeats and shared 2-bp microhomology. The fusion junction was not associated with nucleotide stretches, and the breakpoint-flanking regions harbored no palindromes or noncanonical DNA motifs. These results indicate that microhomology-mediated break-induced replication (MMBIR) can cause deletions at Xp22.31, resulting in contiguous gene deletion syndrome. It appears that interspersed repeats without other known rearrangement-inducing DNA features or high GC contents are sufficient to stimulate MMBIR at Xp22.31.
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Affiliation(s)
- Koki Nagai
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
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Miyoshi Y, Suzuki E, Kiyoto S, Takahashi M, Takashima S, Hara F, Aogi K, Shozo O. Reproductive factors and Breast cancer subtypes among Japanese women. Breast 2017. [DOI: 10.1016/s0960-9776(17)30200-x] [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: 11/29/2022] Open
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45
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Fukami M, Shima H, Suzuki E, Ogata T, Matsubara K, Kamimaki T. Catastrophic cellular events leading to complex chromosomal rearrangements in the germline. Clin Genet 2017; 91:653-660. [PMID: 27888607 DOI: 10.1111/cge.12928] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Revised: 11/20/2016] [Accepted: 11/21/2016] [Indexed: 12/28/2022]
Abstract
Although complex chromosomal rearrangements were thought to reflect the accumulation of DNA damage over time, recent studies have shown that such rearrangements frequently arise from 'all-at-once' catastrophic cellular events. These events, designated chromothripsis, chromoanasynthesis, and chromoanagenesis, were first documented in the cancer genome and subsequently observed in the germline. These events likely result from micronucleus-mediated chromosomal shattering and subsequent random reassembly of DNA fragments, although several other mechanisms have also been proposed. Typically, only one or a few chromosomes of paternal origin are affected per event. These events can produce intrachromosomal deletions, duplications, inversions, and translocations, as well as interchromosomal translocations. Germline complex rearrangements of autosomes often result in developmental delay and dysmorphic features, whereas X chromosomal rearrangements are usually associated with relatively mild clinical manifestations. The concept of these catastrophic events provides novel insights into the etiology of human genomic disorders. This review introduces the molecular characteristics and phenotypic outcomes of catastrophic cellular events in the germline.
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Affiliation(s)
- M Fukami
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - H Shima
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - E Suzuki
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - T Ogata
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - K Matsubara
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - T Kamimaki
- Department of Pediatrics, Shizuoka City Shimizu Hospital, Shizuoka, Japan
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Nakamoto S, Nishiyama R, Kaneda T, Yokota M, Kawamata H, Tajima H, Kaizu T, Kumamoto Y, Yamauchi H, Okuwaki K, Iwai T, Imaizumi H, Suzuki E, Hara A, Ichinoe M, Kida M, Watanabe M. [Conversion Surgery for Initially Unresectable Locally Advanced Pancreatic Cancer Following Gemcitabine plus Nab-Paclitaxel - A Case Report]. Gan To Kagaku Ryoho 2017; 44:173-176. [PMID: 28223678] [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: 06/06/2023]
Abstract
We report a case of unresectable locally advanced pancreatic cancer successfully resected after gemcitabine(GEM)plus nab-paclitaxel(PTX)treatment. A 68-year-old man was referred to our institution with jaundice. We diagnosed pancreatic head cancer using computed tomography(CT)and endoscopic retrograde cholangiopancreatography. We initially diagnosed it as locally advanced unresectable pancreatic cancer because of extensive invasion to the portal vein. GEM plus nab- PTX was administered to the patient as systemic chemotherapy. After 9 courses of chemotherapy, a CT scan revealed that the tumor had significantly reduced in size and range of portal vein invasion. Therefore, we performed pancreaticoduodenectomy with resection of the portal vein and achieved R0 resection. Currently, the patient is alive without recurrence. Therefore, conversion surgery after treatment with GEM plus nab-PTX chemotherapy for unresectable pancreatic cancer should be considered.
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Affiliation(s)
- Shuji Nakamoto
- Dept. of Surgery, Kitasato University School of Medicine
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Suzuki E, Shima H, Toki M, Hanew K, Matsubara K, Kurahashi H, Narumi S, Ogata T, Kamimaki T, Fukami M. Complex X-Chromosomal Rearrangements in Two Women with Ovarian Dysfunction: Implications of Chromothripsis/Chromoanasynthesis-Dependent and -Independent Origins of Complex Genomic Alterations. Cytogenet Genome Res 2017; 150:86-92. [PMID: 28099951 DOI: 10.1159/000455026] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/16/2016] [Indexed: 11/19/2022] Open
Abstract
Our current understanding of the phenotypic consequences and the molecular basis of germline complex chromosomal rearrangements remains fragmentary. Here, we report the clinical and molecular characteristics of 2 women with germline complex X-chromosomal rearrangements. Patient 1 presented with nonsyndromic ovarian dysfunction and hyperthyroidism; patient 2 exhibited various Turner syndrome- associated symptoms including ovarian dysfunction, short stature, and autoimmune hypothyroidism. The genomic abnormalities of the patients were characterized by array-based comparative genomic hybridization, high-resolution karyotyping, microsatellite genotyping, X-inactivation analysis, and bisulfite sequencing. Patient 1 carried a rearrangement of unknown parental origin with a 46,X,der(X)(pter→ p22.1::p11.23→q24::q21.3→q24::p11.4→pter) karyotype, indicative of a catastrophic chromosomal reconstruction due to chromothripsis/chromoanasynthesis. Patient 2 had a paternally derived isochromosome with a 46,X,der(X)(pter→ p22.31::q22.1→q10::q10→q22.1::p22.31→pter) karyotype, which likely resulted from 2 independent, sequential events. Both patients showed completely skewed X inactivation. CpG sites at Xp22.3 were hypermethylated in patient 2. The results indicate that germline complex X-chromosomal rearrangements underlie nonsyndromic ovarian dysfunction and Turner syndrome. Disease-causative mechanisms of these rearrangements likely include aberrant DNA methylation, in addition to X-chromosomal mispairing and haploinsufficiency of genes escaping X inactivation. Notably, our data imply that germline complex X-chromosomal rearrangements are created through both chromothripsis/chromoanasynthesis-dependent and -independent processes.
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Affiliation(s)
- Erina Suzuki
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
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Shimizu Y, Imaizumi H, Yamauchi H, Okuwaki K, Miyazawa S, Iwai T, Takezawa M, Kida M, Suzuki E, Saegusa M, Koizumi W. Pancreatic Fistula Extending into the Thigh Caused by the Rupture of an Intraductal Papillary Mucinous Adenoma of the Pancreas. Intern Med 2017; 56:307-313. [PMID: 28154275 PMCID: PMC5348455 DOI: 10.2169/internalmedicine.56.7422] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 01/13/2023] Open
Abstract
We herein report the first case of a pancreatic fistula extending into the thigh caused by the rupture of an intraductal papillary mucinous neoplasm (IPMN) of the pancreas. An 80-year-old man was suspected to have necrotizing fasciitis because of right femoral pain. Computed tomography showed fluid retention from the pancreatic head to the right iliopsoas muscle and an IPMN at the pancreatic head. The findings of endoscopic retrograde pancreatography led to the suspicion of a minor leak and a pancreatic stent was placed. The patient died due to an uncontrollable infection. A pathological autopsy showed a pancreatic fistula extending into the thigh that had been caused by the rupture of the IPMN.
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MESH Headings
- Adenocarcinoma, Mucinous/complications
- Adenocarcinoma, Mucinous/diagnostic imaging
- Adenocarcinoma, Mucinous/pathology
- Aged, 80 and over
- Carcinoma, Pancreatic Ductal/complications
- Carcinoma, Pancreatic Ductal/diagnostic imaging
- Carcinoma, Pancreatic Ductal/pathology
- Cholangiopancreatography, Endoscopic Retrograde
- Diagnosis, Differential
- Fatal Outcome
- Humans
- Magnetic Resonance Imaging
- Male
- Pancreatic Fistula/diagnosis
- Pancreatic Fistula/etiology
- Pancreatic Neoplasms/complications
- Pancreatic Neoplasms/diagnostic imaging
- Pancreatic Neoplasms/pathology
- Thigh/pathology
- Tomography, X-Ray Computed
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Affiliation(s)
- Yuki Shimizu
- Department of Gastroenterology, Kitasato University School of Medicine, Japan
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Yamaguchi A, Ishiguro H, Torii M, Takada M, Suzuki E, Takeuchi M, Sato F, Toi M. 69P Cisplatin based preoperative chemotherapy regimens for basal-like breast cancer potentially improve prognosis even in patients without pCR: A retrospective analysis from a single-institution. Ann Oncol 2016. [DOI: 10.1016/s0923-7534(21)00229-5] [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: 11/26/2022] Open
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50
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Yamaguchi A, Ishiguro H, Torii M, Takada M, Suzuki E, Takeuchi M, Sato F, Toi M. 69P Cisplatin based preoperative chemotherapy regimens for basal-like breast cancer potentially improve prognosis even in patients without pCR: A retrospective analysis from a single-institution. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw575.008] [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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