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Takagi A, Kusunoki Y, Ohigashi M, Osugi K, Inoue C, Inoue M, Tsunoda T, Kadoya M, Konishi K, Katsuno T, Koyama H. Association between continuous glucose monitoring-derived glycemic control indices and urinary biomarkers of diabetic kidney disease: Hyogo Diabetes Hypoglycemia Cognition Complications study. Acta Diabetol 2024; 61:413-423. [PMID: 38006524 DOI: 10.1007/s00592-023-02214-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 11/08/2023] [Indexed: 11/27/2023]
Abstract
AIMS Glomerular damage and proximal tubular damage play an important role in the pathogenesis of diabetic kidney disease. This study aimed to investigate the relationship between the urinary markers of proximal tubular injury, including urinary liver-type fatty acid-binding protein-to-creatinine ratio (uL-FABP/Cr) and urinary N-acetyl-β-D-glucosaminidase-to-creatinine ratio (uNAG/Cr), and glycemic control status. METHODS This cross-sectional study included 245 and 39 patients with type 2 diabetes mellitus (T2DM) and non-T2DM (NDM), respectively. The participants of this study were fitted with retrospective CGM, and glycemic control indices, such as time in range (TIR) and glycemia risk index (GRI), were calculated. RESULTS The results were presented as medians (interquartile ranges). The uL-FABP/Cr was significantly higher in the microalbuminuria than in the normo-albuminuria group [4.2 (2.7-7.1) and 2.2 (1.4-3.4) μg/gCr, respectively, P < 0.001], while the uNAG/Cr in the normo-albuminuria group [6.3 (4.5-10.1) U/gCr] was significantly higher than that in the NDM group [5.3 (3.8-6.3) U/gCr, P = 0.048] but significantly lower than that in the microalbuminuria group [9.2 (6.4-11.1) U/gCr, P = 0.004]. The multivariate logistic regression analysis indicated that CGM-derived TIR was significantly associated with the urinary albumin-to-creatinine ratio [uAlb/Cr, odds ratio (OR) 0.985, 95% confidence interval (CI) 0.971-0.998, P = 0.029] and uNAG/Cr (OR 0.973, 95% CI 0.957-0.989, P = 0.001) independent of renal function. GRI was similarly associated with uAlb/Cr and uNAG/Cr. CONCLUSION The findings of this study indicated that uNAG/Cr was elevated before albuminuria development and was associated with CGM-derived TIR and GRI.
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Affiliation(s)
- Ayako Takagi
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, 1-1, Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Yoshiki Kusunoki
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, 1-1, Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan.
| | - Mana Ohigashi
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, 1-1, Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Keiko Osugi
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, 1-1, Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Chikako Inoue
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, 1-1, Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Maki Inoue
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, 1-1, Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Taku Tsunoda
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, 1-1, Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Manabu Kadoya
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, 1-1, Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Kosuke Konishi
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, 1-1, Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Tomoyuki Katsuno
- Department of Occupational Therapy, School of Rehabilitation, Hyogo Medical University, Nishinomiya, Hyogo, Japan
| | - Hidenori Koyama
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, 1-1, Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
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2
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Kaga C, Nagino T, Gomi A, Takagi A, Miyazaki K, Yoshida Y, Shida K. Effects of fermented soymilk with Lacticaseibacillus paracasei YIT 9029 on gut microbiota and defecation habits: a randomised, double-blind, placebo-controlled study. Benef Microbes 2024:1-17. [PMID: 38412871 DOI: 10.1163/18762891-bja00003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 01/29/2024] [Indexed: 02/29/2024]
Abstract
Previous studies have demonstrated that soymilk and Lacticaseibacillus paracasei YIT 9029 (strain Shirota: LcS) each beneficially affect the gut microbiota and defecation habits. To investigate the effects of daily consumption of fermented soymilk containing LcS (FSM), we conducted a randomised, double-blind, placebo-controlled study of 112 healthy Japanese adults with a low faecal Bifidobacterium count. They consumed 100 ml FSM or placebo (unfermented soymilk base) once daily for 4 weeks. Their gut microbiota was analysed by 16S rRNA gene amplicon sequencing and quantitative reverse transcription-polymerase chain reaction (PCR), and faecal short-chain fatty acids (SCFAs) and urinary putrefactive products were assessed during the pre- and post-consumption periods. Defecation habits were examined weekly using a subjective questionnaire. In the post-consumption period, living LcS were not detected in two subjects in the FSM group (n = 57) but were detected in one subject in the SM group (n = 55). The FSM group had a significantly higher number and relative abundance of faecal lactobacilli compared with the placebo group. The relative abundance of Bifidobacterium, alpha-diversity of microbiota, and concentrations of acetate and total SCFAs in faeces were significantly increased in the FSM group, although no significant differences were detected between the groups. The number of defecations and defecation days per week significantly increased in both groups. Subgroup analysis of 109 subjects, excluding 3 with inconsistent LcS detection (2 and 1 subjects in the FSM and SM groups, respectively), revealed that the FSM group (n = 55) had significantly greater increases in faecal acetate concentration compared with the SM group (n = 54) and significant upregulation of pathways related to energy production or glucose metabolism in the gut microbiota. These findings suggest that daily FSM consumption improves the gut microbiota and intestinal environment in healthy adults and may help to maintain health and prevent diseases. Registered at the University Hospital Medical Information Network (UMIN) clinical trials registry under: UMIN 000035612.
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Affiliation(s)
- C Kaga
- Yakult Central Institute, 5-11 Izumi, Kunitachi-shi, Tokyo 186-8650, Japan
| | - T Nagino
- Yakult Central Institute, 5-11 Izumi, Kunitachi-shi, Tokyo 186-8650, Japan
| | - A Gomi
- Yakult Central Institute, 5-11 Izumi, Kunitachi-shi, Tokyo 186-8650, Japan
| | - A Takagi
- Yakult Central Institute, 5-11 Izumi, Kunitachi-shi, Tokyo 186-8650, Japan
| | - K Miyazaki
- Yakult Central Institute, 5-11 Izumi, Kunitachi-shi, Tokyo 186-8650, Japan
| | - Y Yoshida
- Yakult Central Institute, 5-11 Izumi, Kunitachi-shi, Tokyo 186-8650, Japan
| | - K Shida
- Yakult Central Institute, 5-11 Izumi, Kunitachi-shi, Tokyo 186-8650, Japan
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3
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Inoue C, Kusunoki Y, Ohigashi M, Osugi K, Kitajima K, Takagi A, Inoue M, Yagi C, Tsunoda T, Kakutani M, Kadoya M, Konishi K, Katsuno T, Koyama H. Association between brain imaging biomarkers and continuous glucose monitoring-derived glycemic control indices in Japanese patients with type 2 diabetes mellitus. BMJ Open Diabetes Res Care 2024; 12:e003744. [PMID: 38233078 PMCID: PMC10806821 DOI: 10.1136/bmjdrc-2023-003744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 12/19/2023] [Indexed: 01/19/2024] Open
Abstract
INTRODUCTION Although type 2 diabetes mellitus (T2DM) is associated with alterations in brain structure, the relationship between glycemic control indices and brain imaging markers remains unclear. This study aimed to investigate the association between continuous glucose monitoring (CGM)-derived glycemic control indices and brain imaging biomarkers assessed by MRI. RESEARCH DESIGN AND METHODS This cross-sectional study included 150 patients with T2DM. The severity of cerebral white matter lesions (WMLs) was assessed using MRI for deep and subcortical white matter and periventricular hyperintensities. The degree of medial temporal lobe atrophy (MTA) was assessed using voxel-based morphometry. Each participant wore a retrospective CGM for 14 consecutive days, and glycemic control indices, such as time in range (TIR) and glycemia risk index (GRI), were calculated. RESULTS The proportion of patients with severe WMLs showed a decreasing trend with increasing TIR (P for trend=0.006). The proportion of patients with severe WMLs showed an increasing trend with worsening GRI (P for trend=0.011). In contrast, no significant association was observed between the degree of MTA and CGM-derived glycemic control indices, including TIR (P for trend=0.325) and GRI (P for trend=0.447). CONCLUSIONS The findings of this study indicate that the severity of WMLs is associated with TIR and GRI, which are indices of the quality of glycemic control. TRIAL REGISTRATION NUMBER UMIN000032143.
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Affiliation(s)
- Chikako Inoue
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, Nishinomiya, Hyogo, Japan
| | - Yoshiki Kusunoki
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, Nishinomiya, Hyogo, Japan
| | - Mana Ohigashi
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, Nishinomiya, Hyogo, Japan
| | - Keiko Osugi
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, Nishinomiya, Hyogo, Japan
| | - Kazuhiro Kitajima
- Department of Radiology, School of Medicine, Hyogo Medical University, Nishinomiya, Japan
| | - Ayako Takagi
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, Nishinomiya, Hyogo, Japan
| | - Maki Inoue
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, Nishinomiya, Hyogo, Japan
| | - Chisako Yagi
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, Nishinomiya, Hyogo, Japan
| | - Taku Tsunoda
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, Nishinomiya, Hyogo, Japan
| | - Miki Kakutani
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, Nishinomiya, Hyogo, Japan
| | - Manabu Kadoya
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, Nishinomiya, Hyogo, Japan
| | - Kosuke Konishi
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, Nishinomiya, Hyogo, Japan
| | - Tomoyuki Katsuno
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, Nishinomiya, Hyogo, Japan
| | - Hidenori Koyama
- Department of Diabetes, Endocrinology and Clinical Immunology, School of Medicine, Hyogo Medical University, Nishinomiya, Hyogo, Japan
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Kondo H, Takagi A, Fukumoto I, Sasaki A, Katayama S. Primary takotsubo syndrome with recurrent prolactinoma. J Cardiol Cases 2023; 28:53-57. [PMID: 37521571 PMCID: PMC10382972 DOI: 10.1016/j.jccase.2023.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 02/20/2023] [Accepted: 03/20/2023] [Indexed: 08/01/2023] Open
Abstract
Both peripartum cardiomyopathy (PPCM) and takotsubo syndrome (TTS) are diagnoses of exclusion and are thus considered a heterogeneous disease group. TTS is generally triggered by psychogenic or physical stress. Recently, the anti-angiogenic factor cleaved prolactin has been noted as a cause of PPCM, but the precise mechanisms of these diseases remain unexplained. An 87-year-old female with a past surgical history, including transsphenoidal endoscopic surgery to remove a pituitary prolactinoma, recently underwent surgery to repair a left-sided femoral neck fracture and developed dyspnea followed by back pain; shortly after, she became embarrassed by fecal incontinence. Her initial electrocardiogram showed T wave inversions with QT prolongation leading to sustained ventricular tachycardia. No obstructive coronary artery disease was found on emergent coronary angiography, and the left ventriculography findings were consistent with TTS. After acute-phase treatment, she was diagnosed with recurrent prolactinoma based on her head magnetic resonance imaging findings. This patient's high levels of prolactin may have played a role in the pathogenesis of TTS. Learning objective Peripartum cardiomyopathy and takotsubo syndrome (TTS) are diagnosed by exclusion, and their precise mechanisms remain unknown. We present a case of TTS associated with a prolactinoma.
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Affiliation(s)
- Hideyuki Kondo
- Department of General Medicine and Community Health Science, Hyogo Medical University Sasayama Medical Center, Hyogo, Japan
- Department of Cardiovascular and Renal Medicine, Hyogo Medical University, Hyogo, Japan
| | - Ayako Takagi
- Department of General Medicine and Community Health Science, Hyogo Medical University Sasayama Medical Center, Hyogo, Japan
| | - Izumi Fukumoto
- Department of General Medicine and Community Health Science, Hyogo Medical University Sasayama Medical Center, Hyogo, Japan
| | - Ayako Sasaki
- Department of General Medicine and Community Health Science, Hyogo Medical University Sasayama Medical Center, Hyogo, Japan
| | - Satoru Katayama
- Department of General Medicine and Community Health Science, Hyogo Medical University Sasayama Medical Center, Hyogo, Japan
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5
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Osugi K, Kusunoki Y, Ohigashi M, Kusunoki K, Inoue C, Inoue M, Takagi A, Tsunoda T, Kadoya M, Konishi K, Katsuno T, Koyama H. Association between low-carbohydrate diets and continuous glucose monitoring-derived time in ranges. J Diabetes Investig 2023; 14:659-668. [PMID: 38078864 PMCID: PMC10119912 DOI: 10.1111/jdi.13999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 01/25/2023] [Accepted: 02/13/2023] [Indexed: 03/05/2023] Open
Abstract
AIMS Low-carbohydrate diets have become popular in the general community. The mutual relationship between the percentage of total energy intake from carbohydrates (CHO/E), glycemic control indices, and diabetes complications remains unclear. MATERIALS AND METHODS This cross-sectional study included 177 patients with type 2 diabetes mellitus who regularly visited outpatient clinics. In this study, dietary questionnaires were used to assess the intake ratio of the three macronutrients, and the low-carbohydrate-diet score was calculated. We investigated the association between the low-carbohydrate-diet score, continuous glucose monitoring (CGM)-derived short-term glycemic control indices, and diabetes complications in patients with type 2 diabetes mellitus. RESULTS The results are presented as medians (interquartile ranges) unless otherwise stated. Hemoglobin A1c was 7.1% (6.6-7.7%), CGM-derived time in range (TIR) was 75.3% (62.8-87.0%), body mass index (BMI) was 24.0 (22.1-26.3) kg/m2, and CHO/E was 49.8% (44.8-55.6%). BMI, triglycerides, and CGM-derived time above range decreased significantly with increasing low-carbohydrate-diet scores. However, no significant association was found between the low-carbohydrate-diet score and glycemic control indices, including TIR, mean amplitude of glycemic excursions, and vascular complications of type 2 diabetes mellitus. CONCLUSION Moderate-carbohydrate diets positively impact weight control and lipid metabolism but may have a limited effect on short-term glycemic variability in Japanese patients with type 2 diabetes mellitus.
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Affiliation(s)
- Keiko Osugi
- Department of Diabetes, Endocrinology and Clinical Immunology, School of MedicineHyogo Medical UniversityNishinomiyaHyogoJapan
| | - Yoshiki Kusunoki
- Department of Diabetes, Endocrinology and Clinical Immunology, School of MedicineHyogo Medical UniversityNishinomiyaHyogoJapan
- Kusunoki ClinicNeyagawa, OsakaJapan
| | - Mana Ohigashi
- Department of Diabetes, Endocrinology and Clinical Immunology, School of MedicineHyogo Medical UniversityNishinomiyaHyogoJapan
| | | | - Chikako Inoue
- Department of Diabetes, Endocrinology and Clinical Immunology, School of MedicineHyogo Medical UniversityNishinomiyaHyogoJapan
| | - Maki Inoue
- Department of Diabetes, Endocrinology and Clinical Immunology, School of MedicineHyogo Medical UniversityNishinomiyaHyogoJapan
| | - Ayako Takagi
- Department of Diabetes, Endocrinology and Clinical Immunology, School of MedicineHyogo Medical UniversityNishinomiyaHyogoJapan
| | - Taku Tsunoda
- Department of Diabetes, Endocrinology and Clinical Immunology, School of MedicineHyogo Medical UniversityNishinomiyaHyogoJapan
| | - Manabu Kadoya
- Department of Diabetes, Endocrinology and Clinical Immunology, School of MedicineHyogo Medical UniversityNishinomiyaHyogoJapan
| | - Kosuke Konishi
- Department of Diabetes, Endocrinology and Clinical Immunology, School of MedicineHyogo Medical UniversityNishinomiyaHyogoJapan
| | - Tomoyuki Katsuno
- Department of Occupational Therapy, School of RehabilitationHyogo Medical UniversityNishinomiyaHyogoJapan
| | - Hidenori Koyama
- Department of Diabetes, Endocrinology and Clinical Immunology, School of MedicineHyogo Medical UniversityNishinomiyaHyogoJapan
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6
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Guo S, Tao H, Gao G, Mhatre S, Lu Y, Takagi A, Li J, Mo L, Rojas OJ, Chu G. All-Aqueous Bicontinuous Structured Liquid Crystal Emulsion through Intraphase Trapping of Cellulose Nanoparticles. Biomacromolecules 2023; 24:367-376. [PMID: 36479984 PMCID: PMC9832472 DOI: 10.1021/acs.biomac.2c01177] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Here, we describe the all-aqueous bicontinuous emulsions with cholesteric liquid crystal domains through hierarchical colloidal self-assembly of nanoparticles. This is achieved by homogenization of a rod-like cellulose nanocrystal (CNC) with two immiscible, phase separating polyethylene glycol (PEG) and dextran polymer solutions. The dispersed CNCs exhibit unequal affinity for the binary polymer mixtures that depends on the balance of osmotic and chemical potential between the two phases. Once at the critical concentration, CNC particles are constrained within one component of the polymer phases and self-assemble into a cholesteric organization. The obtained liquid crystal emulsion demonstrates a confined three-dimensional percolating bicontinuous network with cholesteric self-assembly of CNC within the PEG phase; meanwhile, the nanoparticles in the dextran phase remain isotropic instead. Our results provide an alternative way to arrest bicontinuous structures through intraphase trapping and assembling of nanoparticles, which is a viable and flexible route to extend for a wide range of colloidal systems.
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Affiliation(s)
- Shasha Guo
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Pulp
and Paper Engineering, South China University
of Technology, Guangzhou 510640, China,Bioproducts
Institute, Department of Chemical & Biological Engineering, Department
of Chemistry and Department of Wood Science, The University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Han Tao
- Bio-based
Colloids and Materials, Department of Bioproducts and Biosystems,
School of Chemical Engineering, Aalto University, Vuorimiehentie 1, Espoo 02510, Finland
| | - Guang Gao
- Department
of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Sameer Mhatre
- Bioproducts
Institute, Department of Chemical & Biological Engineering, Department
of Chemistry and Department of Wood Science, The University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Yi Lu
- Bioproducts
Institute, Department of Chemical & Biological Engineering, Department
of Chemistry and Department of Wood Science, The University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Ayako Takagi
- Bioproducts
Institute, Department of Chemical & Biological Engineering, Department
of Chemistry and Department of Wood Science, The University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Jun Li
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Pulp
and Paper Engineering, South China University
of Technology, Guangzhou 510640, China
| | - Lihuan Mo
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Pulp
and Paper Engineering, South China University
of Technology, Guangzhou 510640, China
| | - Orlando J. Rojas
- Bioproducts
Institute, Department of Chemical & Biological Engineering, Department
of Chemistry and Department of Wood Science, The University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada,Bio-based
Colloids and Materials, Department of Bioproducts and Biosystems,
School of Chemical Engineering, Aalto University, Vuorimiehentie 1, Espoo 02510, Finland,, . Phone: +358503080661
| | - Guang Chu
- Bio-based
Colloids and Materials, Department of Bioproducts and Biosystems,
School of Chemical Engineering, Aalto University, Vuorimiehentie 1, Espoo 02510, Finland,. Phone: +1-604-822-3457
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7
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Kambara H, Ogawa H, Takagi A, Shin D, Yoshimura N, Koike Y. Modulation of wrist stiffness caused by adaptation to stochastic environment. Adv Robot 2021. [DOI: 10.1080/01691864.2021.1900913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- H. Kambara
- Institute of Innovative Research, Tokyo Institute of Technology, Kanagawa, Japan
| | - H. Ogawa
- Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Kanagawa, Japan
| | - A. Takagi
- Institute of Innovative Research, Tokyo Institute of Technology, Kanagawa, Japan
| | - D. Shin
- Faculty of Engineering, Tokyo Polytechnic University, Kanagawa, Japan
| | - N. Yoshimura
- Institute of Innovative Research, Tokyo Institute of Technology, Kanagawa, Japan
| | - Y. Koike
- Institute of Innovative Research, Tokyo Institute of Technology, Kanagawa, Japan
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8
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Ishiwata S, Matsue Y, Kasai T, Yatsu S, Matsumoto H, Shitara J, Shimizu M, Kurita A, Kato T, Suda S, Hiki M, Takagi A, Daida H. Validation and comparison of BIOSTAT risk score and AHEAD score for patients with acute heart failure. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background/Introduction
Acute heart failure (AHF) is one of the major causes of mortality, and identifying the patients at high risk of mortality at the time of admission is crucial to improve clinical outcomes. Although some risk prediction models for patients with AHF have been proposed mainly from randomized clinical trials, the patients in such studies tend not to be similar to those in the real world. Recently, BIOSTAT risk score and AHEAD score derived from two large-scale registry dataset are proposed as useful risk stratification tools for patients with AHF. However, these scores have not been well externally validated and their prognostic prediction performance has not been directly compared.
Purpose
To validate and compare prognostication of BIOSTAT risk score and AHEAD score in AHF patients.
Methods
Patients who consecutively admitted to the cardiac intensive-care unit in our institution with a diagnosis of AHF from 2007 to 2011 were analyzed. Among them, patients with acute coronary syndrome, dialysis, malignancy were excluded. BIOSTAT risk score was calculated using 5 factors (age, blood urea nitrogen, BNP, hemoglobin, prescription of beta blockers), and AHEAD score was also calculated with 5 factors (atrial fibrillation, hemoglobin, age, creatinine, and diabetes mellitus). We also developed AHEAD + BNP model incorporating BNP into AHEAD score. Endpoint was 1-year all-cause death.
Results
Overall, 591 eligible patients were enrolled (mean age was 70±14 years old, 64.8% were male) and 96 patients (16.2%) died during the follow-up of 1-year. The median [interquartile range] of AHEAD score and BIOSTAT risk score were 2 [1–3] and 3 [2–4], respectively. The areas under the curves of receiver operating characteristic curve (AUC) were 0.66 for AHEAD, 0.68 for AHEAD + BNP, and 0.72 for BIOSTAT, respectively. The calibration plots for AHEAD, AHEAD + BNP, and BIOSTAT models showed good calibration (Hosmer-Lemeshow test: p=0.89, 0.74, and 0.74, respectively). The BIOSTAT model's AUC was significantly higher compared to AHEAD (p=0.018) and marginally statistically higher compared to AHEAD + BNP (p=0.054). However, BIOSTAT model showed statistically significant net reclassification improvement compared to both AHEAD (NRI: 0.43, p<0.001) and AHEAD + BNP (NRI: 0.43, p<0.001).
Conclusion
The BIOSTAT score comprised of five readily available clinical variables predict 1-year mortality of patients with AHF with good discrimination and calibration.
ROC curves
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- S Ishiwata
- Juntendo University Graduate School of Medicine, Department of Cardiovascular Medicine, Cardiovascular Respiratory Sleep Medicine, Tokyo, Japan
| | - Y Matsue
- Juntendo University Graduate School of Medicine, Department of Cardiovascular Medicine, Cardiovascular Respiratory Sleep Medicine, Tokyo, Japan
| | - T Kasai
- Juntendo University Graduate School of Medicine, Department of Cardiovascular Medicine, Cardiovascular Respiratory Sleep Medicine, Tokyo, Japan
| | - S Yatsu
- Juntendo University Graduate School of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - H Matsumoto
- Juntendo University Graduate School of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - J Shitara
- Juntendo University Graduate School of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - M Shimizu
- Juntendo University Graduate School of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - A Kurita
- Juntendo University Graduate School of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - T Kato
- Juntendo University Graduate School of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - S Suda
- Juntendo University Graduate School of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - M Hiki
- Juntendo University Graduate School of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - A Takagi
- Juntendo University Graduate School of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - H Daida
- Juntendo University Graduate School of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
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9
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Koshiishi T, Koinuma M, Takagi A, Nakamura H. Pharmacological considerations in antipsychotic drug selection for prevention of drug-induced dysphagia. Pharmazie 2020; 75:595-598. [PMID: 33239136 DOI: 10.1691/ph.2020.0735] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Antipsychotic drugs have the ability to induce dysphagia. The aim of this study was to determine the association between the receptor affinity of antipsychotic drugs and the time-to-onset of dysphagia, and to identify factors that prevent antipsychotic drug-induced dysphagia. We used the receptor affinity of 13 antipsychotic drugs for which data were reported in an in vitro test using human receptors, extracted time-to-onset dysphagia from the Japan Adverse Drug Event Report database, and used data from 46 patients to evaluate the correlation between receptor affinity and time-to-onset of dysphagia. We found a negative correlation between D₂ receptor affinity and time-to-onset of dysphagia (r = -0.4572, p = 0.0016), and a positive correlation between H1, M1, and M₃ receptor affinity and time-to-onset of dysphagia (r = 0.5006, p = 0.0006; r = 0.4130, p = 0.0059; and r = 0.4149, p = 0.0057, respectively). Antipsychotic drugs with a strong D₂ receptor-blocking action may accelerate the onset of dysphagia, whereas a strong H1, M1, and M₃ receptor-blocking action may delay the onset of dysphagia. The current study revealed the relationship between the receptor affinity of antipsychotic drugs and the time-to-onset of dysphagia, which should aid in the selection of antipsychotic drugs, while preventing dysphagia.
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Affiliation(s)
- T Koshiishi
- Department of Pharmacy, Tokyo Medical University Hachioji Medical Center, Teikyo Heisei University, Japan;,
| | - M Koinuma
- Department of Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences, Teikyo Heisei University, Japan
| | - A Takagi
- Department of Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences, Teikyo Heisei University, Japan
| | - H Nakamura
- Department of Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences, Teikyo Heisei University, Japan
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10
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Takagi A, Maxwell S, Melendez-Calderon A, Burdet E. The dominant limb preferentially stabilizes posture in a bimanual task with physical coupling. J Neurophysiol 2020; 123:2154-2160. [PMID: 32348682 DOI: 10.1152/jn.00047.2020] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Humans are endowed with an ability to skillfully handle objects, like when holding a jar with the nondominant hand while opening the lid with the dominant hand. Dynamic dominance, a prevailing theory in handedness research, proposes that the nondominant hand is specialized for postural stability, which would explain why right-handed people hold the jar steady using the left hand. However, the underlying specialization of the nondominant hand has only been tested unimanually, or in a bimanual task where the two hands had different functions. Using a dedicated dual-wrist robotic interface, we tested the dynamic dominance hypothesis in a bimanual task where both hands carry out the same function. We examined how left- and right-handed subjects held onto a vibrating virtual object using their wrists, which were physically coupled by the object. Muscular activity of the wrist flexors and extensors revealed a preference for cocontracting the dominant hand during both holding and transport of the object, which suggests proficiency in the dominant hand for stabilization, contradicting the dynamic dominance hypothesis. While the reliance on the dominant hand was partially explained by its greater strength, the Edinburgh inventory was a better predictor of the difference in the cocontraction between the dominant and nondominant hands. When provided with redundancy to stabilize the task, the dominant hand preferentially cocontracts to absorb perturbing forces.NEW & NOTEWORTHY We found that subjects prefer to stabilize a bimanually held object by cocontracting their dominant limb, contradicting the established view that the nondominant limb is specialized toward stabilization.
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Affiliation(s)
- A Takagi
- NTT Communication Science Laboratories, Atsugi, Kanagawa, Japan.,Imperial College of Science, Technology and Medicine, London, United Kingdom.,Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency, Kawaguchi, Saitama, Japan
| | - S Maxwell
- Imperial College of Science, Technology and Medicine, London, United Kingdom
| | - A Melendez-Calderon
- School of Information Technology and Electronic Engineering, University of Queensland, St Lucia, Queensland, Australia.,Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, Illinois
| | - E Burdet
- Imperial College of Science, Technology and Medicine, London, United Kingdom
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11
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Ichikawa M, Miyasaka Y, Takagi A, Ieko Y, Kanai T, Suzuki K, Yano N, Yamada M, Harada M, Akamatsu H, Nemoto K. Effectiveness of a 3D-Printed Bolus with Gel and Silicon Materials for an Irregularly Shaped Skin Surface. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.848] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Momo K, Shimano M, Kanezaki Y, Minagawa A, Takagi A, Seino T, Koinuma M. Assessment of "look-alike" packaging designs related to medication errors using information technology. Pharmazie 2019; 74:310-312. [PMID: 31109403 DOI: 10.1691/ph.2019.8924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
This study aimed to assess the similarity among press-through pack (PTP) sheets of pharmaceutical products in Japan. The appearance of PTPs was assessed using a pharmaceutical design database (PDD) of 2,750 pharmaceutical tablets comprising approximately 40 % of the 6,840 products marketed in Japan. Package sheet color (Sc), tablet color (Tc), character color (Cc), sheet line color (SLc), and upper color (Uc) were used to evaluate the uniformity of PTP sheet design. To assess the risk of misidentification, 1,000 prescriptions for 82,273 cancer patients were retrieved from 21,026,742 records in the claims database of the Japan Medical Data Center Co. Ltd., Tokyo, Japan. The most frequent PTP sheet colors for 143 drugs were Sc (silver), Tc (white), Cc (blue), SLc (none), and Uc (silver). The prescribing pattern of 1000 randomly chosen prescriptions was analyzed. Database records of prescriptions without tablets (n = 69), including only one PTP tablet (n = 292), and those with lack of PDD prescription data (n = 388) were excluded. Eventually, 236 prescriptions were evaluated. Fourteen prescriptions (5.9%) had PTP sheets with five matching elements and 29 had with four matching elements (12.3%). This novel PDD database for information technology concept easily identified similar PTP sheets involved in prescriptions dispensed in 18 % of evaluated cancer patients. The concept seems to be applicable for preventing look-alike dispensing errors.
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13
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Tamura S, Suga Y, Tanamura M, Murata-Kawakami M, Takagi Y, Hottori Y, Kakihara M, Suzuki S, Takagi A, Kojima T. Optimisation of antithrombin resistance assay as a practical clinical laboratory test: Development of prothrombin activator using factors Xa/Va and automation of assay. Int J Lab Hematol 2018; 40:312-319. [PMID: 29436777 DOI: 10.1111/ijlh.12786] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Accepted: 01/11/2018] [Indexed: 11/27/2022]
Abstract
INTRODUCTION Antithrombin resistance (ATR) is a novel thrombotic risk in abnormal prothrombins. A manual ATR assay using Oxyuranus scutellatus (Ox) venom as a prothrombin activator was established for detecting antithrombin-resistant prothrombin. However, this assay was limited because of Ox snake venom availability and its throughput capacity. Here, we have improved the ATR assay using bovine factors Xa and Va (FXa/Va) as prothrombin activators and have optimised assay conditions for an automated instrument (ACL TOP 500). METHODS Diluted plasma was incubated with a prothrombin activator mix (phospholipids, CaCl2 , and bovine FXa/Va), followed by inactivation with antithrombin for 10, 20 and 30 minutes. We added a chromogenic substrate S-2238, and assessed changes in absorbance/min at 405 nm. We also adapted assay conditions for ACL TOP 500. RESULTS Optimum conditions for FXa/Va treatment were 6.25% phospholipids, 5 mM CaCL2 , 0.01 μg/mL FXa and 0.1 μg/mL FVa. ATR assay kinetics with the FXa/Va activator was comparable with that with the Ox activator in heterozygous reconstituted plasma with the recombinant wild-type or antithrombin-resistant prothrombin. Using ACL TOP 500, optimum conditions for the FXa/Va treatment were 10.0% phospholipids, 5 mM CaCl2 , 0.02 μg/mL FXa and 0.2 μg/mL FVa. The automated ATR assay with the FXa/Va activator demonstrated good detectability for antithrombin-resistant prothrombin in plasma from a heterozygous carrier with prothrombin Yukuhashi or Belgrade. CONCLUSION We optimised the ATR assay with the FXa/Va activator and adapted the assay for ACL TOP 500; the assay showed the ability to clearly detect antithrombin-resistant prothrombin in manual and automated procedures.
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Affiliation(s)
- S Tamura
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Suga
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Tanamura
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Murata-Kawakami
- Department of Transfusion Medicine, Nagoya University Hospital, Nagoya, Japan
| | - Y Takagi
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Japan Society for the Promotion of Science, Tokyo, Japan
| | - Y Hottori
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Kakihara
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - S Suzuki
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - A Takagi
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Kojima
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
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14
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Kajiura S, Kashii T, Takagi A, Chikaoka S, Hayashi N, Matsushita T, Fukai S, Kadota A, Nakajima K, Horikawa H, Takemura Y, Shima T, Furuichi A, Yoshita H, Ando T, Miwa T, Murakami N, Hayashi R. The reasons and timing of the oral transmucosal fentanyl administration in Japan. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx673.005] [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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15
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Suzuki S, Nakamura Y, Suzuki N, Yamazaki T, Takagi Y, Tamura S, Takagi A, Kanematsu T, Matsushita T, Kojima T. Combined deficiency of factors V and VIII by chance coinheritance of parahaemophilia and haemophilia A, but not by mutations of either LMAN1 or MCFD2, in a Japanese family. Haemophilia 2017; 24:e13-e16. [PMID: 29082580 DOI: 10.1111/hae.13360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/19/2017] [Indexed: 11/26/2022]
Affiliation(s)
- S Suzuki
- Department of Pathophysiological Laboratory Science, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Nakamura
- Department of Pathophysiological Laboratory Science, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - N Suzuki
- Department of Transfusion Medicine, Nagoya University Hospital, Nagoya, Japan
| | | | - Y Takagi
- Department of Pathophysiological Laboratory Science, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - S Tamura
- Department of Pathophysiological Laboratory Science, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - A Takagi
- Department of Pathophysiological Laboratory Science, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Kanematsu
- Department of Clinical Laboratory, Nagoya University Hospital, Nagoya, Japan
| | - T Matsushita
- Department of Transfusion Medicine, Nagoya University Hospital, Nagoya, Japan.,Department of Clinical Laboratory, Nagoya University Hospital, Nagoya, Japan
| | - T Kojima
- Department of Pathophysiological Laboratory Science, Nagoya University Graduate School of Medicine, Nagoya, Japan
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16
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Miljic P, Gvozdenov M, Takagi Y, Takagi A, Pruner I, Dragojevic M, Tomic B, Bodrozic J, Kojima T, Radojkovic D, Djordjevic V. Clinical and biochemical characterization of the prothrombin Belgrade mutation in a large Serbian pedigree: new insights into the antithrombin resistance mechanism. J Thromb Haemost 2017; 15:670-677. [PMID: 28075532 DOI: 10.1111/jth.13618] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Indexed: 11/28/2022]
Abstract
Essentials Prothrombin Belgrade mutation leads to antithrombin resistance. Clinical and biochemical phenotypes in a large family with this mutation were investigated. In carriers, we detected decreased factor II activity and increased endogenous thrombin potential. Prothrombin Belgrade mutation represents a strong prothrombotic risk factor. SUMMARY Background The recently reported c.1787G>A mutation in the prothrombin gene leads to Arg596Gln replacement in the protein molecule (prothrombin Belgrade). This substitution impairs binding of antithrombin to thrombin and results in inherited thrombophilia, known as antithrombin resistance. Objectives We aimed to elucidate the clinical and biochemical characteristics of thrombophilia associated with antithrombin resistance in a large Serbian family with the prothrombin Belgrade mutation. Patients and methods Nineteen family members were investigated, among whom 10 were carriers of the c.1787G>A mutation. In all subjects the clinical phenotype was determined and laboratory investigations of hemostatic parameters were performed. Results Six out of the 10 mutation carriers developed thromboembolic events, mainly deep venous and mesenteric vein thrombosis. The median age of the first thrombotic event was 26.5 (12-41) years, whereas the incidence rate of first thrombosis was 2.2% per year. In all mutation carriers prothrombin activity was significantly decreased in comparison with non-carriers, clearly distinguishing each group. However, the presence of the mutation did not affect the prothrombin antigen level in plasma. The endogenous thrombin potential was significantly increased in all carriers in comparison with non-carriers, indicating the presence of blood hypercoagulability. Interestingly, levels of D-dimer and the F1+2 fragment were similar in both groups. Conclusions Although rare, the prothrombin Belgrade mutation represents strong thrombophilia with early onset of thrombosis in the investigated family. According to our results, decreased prothrombin activity may be a simple screening test for detection of this mutation in thrombotic patients.
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Affiliation(s)
- P Miljic
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
- Clinic of Hematology, University Clinical Center, Belgrade, Serbia
| | - M Gvozdenov
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Serbia, Serbia
| | - Y Takagi
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - A Takagi
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - I Pruner
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Serbia, Serbia
| | - M Dragojevic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Serbia, Serbia
| | - B Tomic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Serbia, Serbia
| | - J Bodrozic
- Clinic of Hematology, University Clinical Center, Belgrade, Serbia
| | - T Kojima
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - D Radojkovic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Serbia, Serbia
| | - V Djordjevic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Serbia, Serbia
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17
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Nara K, Horie M, Takagi A, Yamasaki K. Effects of Different Bread-making Methods on the Isoflavone Composition of Groundnut Bread. J JPN SOC FOOD SCI 2017. [DOI: 10.3136/nskkk.64.542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Kazuhiro Nara
- Department of Food and Health Sciences, Faculty of Human Life Sciences, Jissen Women’s University
| | - Masanori Horie
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
| | - Ayako Takagi
- Faculty of Contemporary Human Life Science, Tokyo Kasei Gakuin University
| | - Kaoru Yamasaki
- Faculty of Contemporary Human Life Science, Tokyo Kasei Gakuin University
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18
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Taquahashi Y, Takagi A, Morita K, Tsuji M, Imaida K, Kanno J. Level of dispersion of MWCNT aerosol affects the lung burden and lung lesion in whole body inhalation study. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.07.441] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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19
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Ueno A, Ohkoshi K, Ikegami K, Takagi A, Asano H, Oguri H. Fine-tuning to minimize emittances of J-PARC RF-driven H⁻ ion source. Rev Sci Instrum 2016; 87:02B130. [PMID: 26932012 DOI: 10.1063/1.4932573] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The Japan Proton Accelerator Research Complex (J-PARC) cesiated RF-driven H(-) ion source has been successfully operated for about one year. By the world's brightest level beam, the J-PARC design beam power of 1 MW was successfully demonstrated. In order to minimize the transverse emittances, the rod-filter-field (RFF) was optimized by changing the triple-gap-lengths of each of pairing five piece rod-filter-magnets. The larger emittance degradation seems to be caused by impurity-gases than the RFF. The smaller beam-hole-diameter of the extraction electrode caused the more than expected improvements on not only the emittances but also the peak beam intensity.
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Affiliation(s)
- A Ueno
- J-PARC Center, Tokai-Mura, Naka-Gun, Ibaraki-Ken 319-1195, Japan
| | - K Ohkoshi
- J-PARC Center, Tokai-Mura, Naka-Gun, Ibaraki-Ken 319-1195, Japan
| | - K Ikegami
- J-PARC Center, Tokai-Mura, Naka-Gun, Ibaraki-Ken 319-1195, Japan
| | - A Takagi
- J-PARC Center, Tokai-Mura, Naka-Gun, Ibaraki-Ken 319-1195, Japan
| | - H Asano
- J-PARC Center, Tokai-Mura, Naka-Gun, Ibaraki-Ken 319-1195, Japan
| | - H Oguri
- J-PARC Center, Tokai-Mura, Naka-Gun, Ibaraki-Ken 319-1195, Japan
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20
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Ueno A, Ohkoshi K, Ikegami K, Takagi A, Asano H, Oguri H. Pre-conditioning procedure suitable for internal-RF-antenna of J-PARC RF-driven H⁻ ion source. Rev Sci Instrum 2016; 87:02B129. [PMID: 26932011 DOI: 10.1063/1.4932323] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The Japan Proton Accelerator Research Complex (J-PARC) cesiated RF-driven H(-) ion source has been successfully operated for about 1 yr. By the world brightest level beam, the J-PARC design beam power of 1 MW was successfully demonstrated. Although no internal-RF-antenna failure, except for the once caused by an excess cesium due to a misoperation, occurred in the operation, many antennas failed in pre-conditionings for the first hundred days. The antenna failure rate was drastically decreased by using an antenna with coating thicker than a standard value and the pre-conditioning procedure repeating 15 min 25 kW RF-power operation and impurity-gas evacuation a few times, before the full power (50 kW) operation.
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Affiliation(s)
- A Ueno
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - K Ohkoshi
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - K Ikegami
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - A Takagi
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - H Asano
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - H Oguri
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
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21
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Shibata T, Nishida K, Mochizuki S, Mattei S, Lettry J, Hatayama A, Ueno A, Oguri H, Ohkoshi K, Ikegami K, Takagi A, Asano H, Naito F. Numerical study of plasma generation process and internal antenna heat loadings in J-PARC RF negative ion source. Rev Sci Instrum 2016; 87:02B128. [PMID: 26932010 DOI: 10.1063/1.4931787] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A numerical model of plasma transport and electromagnetic field in the J-PARC (Japan Proton Accelerator Research Complex) radio frequency ion source has been developed to understand the relation between antenna coil heat loadings and plasma production/transport processes. From the calculation, the local plasma density increase is observed in the region close to the antenna coil. Electrons are magnetized by the magnetic field line with absolute magnetic flux density 30-120 Gauss which leads to high local ionization rate. The results suggest that modification of magnetic configuration can be made to reduce plasma heat flux onto the antenna.
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Affiliation(s)
- T Shibata
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - K Nishida
- Keio University, Hiyoshi, Kohoku-ku, Yokohama-shi, Kanagawa-ken 223-8522, Japan
| | - S Mochizuki
- Keio University, Hiyoshi, Kohoku-ku, Yokohama-shi, Kanagawa-ken 223-8522, Japan
| | - S Mattei
- European Organization for Nuclear Research (CERN), 1211 Geneva 23, Switzerland
| | - J Lettry
- European Organization for Nuclear Research (CERN), 1211 Geneva 23, Switzerland
| | - A Hatayama
- Keio University, Hiyoshi, Kohoku-ku, Yokohama-shi, Kanagawa-ken 223-8522, Japan
| | - A Ueno
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - H Oguri
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - K Ohkoshi
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - K Ikegami
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - A Takagi
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - H Asano
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - F Naito
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
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22
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Riillo F, Bagnato C, Allievi AG, Takagi A, Fabrizi L, Saggio G, Arichi T, Burdet E. A Simple fMRI Compatible Robotic Stimulator to Study the Neural Mechanisms of Touch and Pain. Ann Biomed Eng 2016; 44:2431-2441. [PMID: 26833039 PMCID: PMC4937068 DOI: 10.1007/s10439-016-1549-y] [Citation(s) in RCA: 2] [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: 09/14/2015] [Accepted: 01/12/2016] [Indexed: 11/06/2022]
Abstract
This paper presents a simple device for the investigation of the human somatosensory system with functional magnetic imaging (fMRI). PC-controlled pneumatic actuation is employed to produce innocuous or noxious mechanical stimulation of the skin. Stimulation patterns are synchronized with fMRI and other relevant physiological measurements like electroencephalographic activity and vital physiological parameters. The system allows adjustable regulation of stimulation parameters and provides consistent patterns of stimulation. A validation experiment demonstrates that the system safely and reliably identifies clusters of functional activity in brain regions involved in the processing of pain. This new device is inexpensive, portable, easy-to-assemble and customizable to suit different experimental requirements. It provides robust and consistent somatosensory stimulation, which is of crucial importance to investigating the mechanisms of pain and its strong connection with the sense of touch.
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Affiliation(s)
- F Riillo
- Department of Bioengineering, Imperial College of Science, Technology and Medicine, London, UK.,Department of Electronic Engineering, University of Tor Vergata, Rome, Italy
| | - C Bagnato
- Department of Bioengineering, Imperial College of Science, Technology and Medicine, London, UK.
| | - A G Allievi
- Department of Bioengineering, Imperial College of Science, Technology and Medicine, London, UK
| | - A Takagi
- Department of Bioengineering, Imperial College of Science, Technology and Medicine, London, UK
| | - L Fabrizi
- Department of Neuroscience, Physiology and Pharmacology, University College London, London, UK
| | - G Saggio
- Department of Electronic Engineering, University of Tor Vergata, Rome, Italy
| | - T Arichi
- Department of Bioengineering, Imperial College of Science, Technology and Medicine, London, UK.,Centre for the Developing Brain, King's College London, St Thomas' Hospital, London, UK
| | - E Burdet
- Department of Bioengineering, Imperial College of Science, Technology and Medicine, London, UK.
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23
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Oguri H, Ohkoshi K, Ikegami K, Takagi A, Asano H, Ueno A, Shibata T. Status of the RF-driven H⁻ ion source for J-PARC linac. Rev Sci Instrum 2016; 87:02B138. [PMID: 26932020 DOI: 10.1063/1.4935641] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
For the upgrade of the Japan Proton Accelerator Research Complex linac beam current, a cesiated RF-driven negative hydrogen ion source was installed during the 2014 summer shutdown period, with subsequent operations commencing on September 29, 2014. The ion source has been successfully operating with a beam current and duty factor of 33 mA and 1.25% (500 μs and 25 Hz), respectively. The result of recent beam operation has demonstrated that the ion source is capable of continuous operation for approximately 1100 h. The spark rate at the beam extractor was observed to be at a frequency of less than once a day, which is an acceptable level for user operation. Although an antenna failure occurred during operation on October 26, 2014, no subsequent serious issues have occurred since then.
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Affiliation(s)
- H Oguri
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - K Ohkoshi
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - K Ikegami
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - A Takagi
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - H Asano
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - A Ueno
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - T Shibata
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
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Nakamura Y, Ando Y, Takagi Y, Murata M, Kozuka T, Nakata Y, Hasebe R, Takagi A, Matsushita T, Shima M, Kojima T. Distinct X chromosomal rearrangements in four haemophilia B patients with entire F9 deletion. Haemophilia 2015; 22:433-9. [PMID: 26686734 DOI: 10.1111/hae.12849] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 06/09/2015] [Accepted: 09/14/2015] [Indexed: 01/31/2023]
Abstract
INTRODUCTION Haemophilia B is an X-linked bleeding disorder caused by a coagulation factor IX gene (F9) abnormality. Numerous F9 defects have been identified to date; however, only a few with an entire F9 deletion have been reported in detail. AIM To elucidate the cause of severe haemophilia B, we investigated the precise X chromosome abnormalities in four Japanese patients who did not show all amplifications in F9-specific PCR. METHODS We analysed the patient's genomic DNA using Multiplex ligation-dependent probe amplification (MLPA). To assess the extent of any deletions, we further performed mapping PCRs, inverse PCRs or long-range PCRs and direct sequencing analyses of the X chromosome. RESULTS We detected entire F9 deletions in four haemophilia B patients and identified the precise deleted regions of the X chromosome including F9. Patient 1 had a 149-kb deletion with breakpoints 90-kb upstream and 30-kb downstream from F9. Patients 2 and 3 showed 273-kb and 1.19-Mb deletions respectively. Patient 4 had two deleted regions: a 1663-bp deletion 1.34-Mb upstream from F9 and a 7.2-Mb deletion including F9. These distinct breakpoints found in four different patients suggest that the mechanism of X chromosome deletion may be different between individuals. Non-allelic homologous recombination (NAHR), microhomology-mediated break-induced replication (MMBIR) or fork stalling and template switching (FoSTeS) may occur in respective X chromosomes of the four haemophilia B patients analysed. CONCLUSIONS We identified diverse X chromosomal rearrangements in four haemophilia B patients, which might be caused by distinct mechanisms of genomic rearrangement.
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Affiliation(s)
- Y Nakamura
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Ando
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Takagi
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Murata
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Japan Society for the Promotion of Science, Tokyo, Japan
| | - T Kozuka
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Nakata
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - R Hasebe
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - A Takagi
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Matsushita
- Department of Transfusion Medicine, Nagoya University Hospital, Nagoya, Japan
| | - M Shima
- Department of Paediatric, Nara Medical University, Nara, Japan
| | - T Kojima
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Ueno A, Koizumi I, Ohkoshi K, Ikegami K, Takagi A, Yamazaki S, Oguri H. Dependence of beam emittance on plasma electrode temperature and rf-power, and filter-field tuning with center-gapped rod-filter magnets in J-PARC rf-driven H(-) ion source. Rev Sci Instrum 2014; 85:02B133. [PMID: 24593573 DOI: 10.1063/1.4854195] [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] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The prototype rf-driven H(-) ion-source with a nickel plated oxygen-free-copper (OFC) plasma chamber, which satisfies the Japan Proton Accelerator Research Complex (J-PARC) 2nd stage requirements of a H(-) ion beam current of 60 mA within normalized emittances of 1.5 π mm mrad both horizontally and vertically, a flat top beam duty factor of 1.25% (500 μs × 25 Hz) and a life-time of more than 50 days, was reported at the 3rd international symposium on negative ions, beams, and sources (NIBS2012). The experimental results of the J-PARC ion source with a plasma chamber made of stainless-steel, instead of nickel plated OFC used in the prototype source, are presented in this paper. By comparing these two sources, the following two important results were acquired. One was that the about 20% lower emittance was produced by the rather low plasma electrode (PE) temperature (TPE) of about 120 °C compared with the typically used TPE of about 200 °C to maximize the beam current for the plasma with the abundant cesium (Cs). The other was that by using the rod-filter magnets with a gap at each center and tuning the gap-lengths, the filter-field was optimized and the rf-power necessary to produce the J-PARC required H(-) ion beam current was reduced typically 18%. The lower rf-power also decreases the emittances.
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Affiliation(s)
- A Ueno
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - I Koizumi
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - K Ohkoshi
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - K Ikegami
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - A Takagi
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - S Yamazaki
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - H Oguri
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
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Yamazaki S, Ikegami K, Ohkoshi K, Ueno A, Koizumi I, Takagi A, Oguri H. Operation and development status of the J-PARC ion source. Rev Sci Instrum 2014; 85:02B136. [PMID: 24593576 DOI: 10.1063/1.4858155] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A cesium-free H(-) ion source driven with a LaB6 filament is being operated at the Japan Proton Accelerator Research Complex (J-PARC) without any serious trouble since the restoration from the March 2011 earthquake. The H(-) ion current from the ion source is routinely restricted approximately 19 mA for the lifetime of the filament. In order to increase the beam power at the linac beam operation (January to February 2013), the beam current from the ion source was increased to 22 mA. At this operation, the lifetime of the filament was estimated by the reduction in the filament current. According to the steep reduction in the filament current, the break of the filament was predicted. Although the filament has broken after approximately 10 h from the steep current reduction, the beam operation was restarted approximately 8 h later by the preparation for the exchange of new filament. At the study time for the 3 GeV rapid cycling synchrotron (April 2013), the ion source was operated at approximately 30 mA for 8 days. As a part of the beam current upgrade plan for the J-PARC, the front end test stand consisting of the ion source and the radio frequency quadrupole is under preparation. The RF-driven H(-) ion source developed for the J-PARC 2nd stage requirements will be tested at this test stand.
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Affiliation(s)
- S Yamazaki
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - K Ikegami
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - K Ohkoshi
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - A Ueno
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - I Koizumi
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - A Takagi
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - H Oguri
- J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
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Ganesh G, Takagi A, Osu R, Yoshioka T, Kawato M, Burdet E. Two is better than one: physical interactions improve motor performance in humans. Sci Rep 2014; 4:3824. [PMID: 24452767 PMCID: PMC3899645 DOI: 10.1038/srep03824] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Accepted: 01/03/2014] [Indexed: 11/09/2022] Open
Abstract
How do physical interactions with others change our own motor behavior? Utilizing a novel motor learning paradigm in which the hands of two - individuals are physically connected without their conscious awareness, we investigated how the interaction forces from a partner adapt the motor behavior in physically interacting humans. We observed the motor adaptations during physical interactions to be mutually beneficial such that both the worse and better of the interacting partners improve motor performance during and after interactive practice. We show that these benefits cannot be explained by multi-sensory integration by an individual, but require physical interaction with a reactive partner. Furthermore, the benefits are determined by both the interacting partner's performance and similarity of the partner's behavior to one's own. Our results demonstrate the fundamental neural processes underlying human physical interactions and suggest advantages of interactive paradigms for sport-training and physical rehabilitation.
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Affiliation(s)
- G. Ganesh
- Center for Information and Neural Networks (CiNet), National Institute of Information and Communications Technology, 1-4 Yamadaoka, Osaka University Campus, Suita, Japan 5650871
- ATR Computational Neuroscience Laboratories, 2-2-2, Hikaridai, Seika-cho, Soraku-gun, Kyoto, Japan 6190288
- UMI 3218 JRL, Centre National de la Recherche Scientifique, Tsukuba, Japan 3058568
| | - A. Takagi
- Department of Bioengineering, Imperial College of Science, Technology and Medicine, South Kensington, London UK SW72AZ
| | - R. Osu
- ATR Computational Neuroscience Laboratories, 2-2-2, Hikaridai, Seika-cho, Soraku-gun, Kyoto, Japan 6190288
| | - T. Yoshioka
- ATR Computational Neuroscience Laboratories, 2-2-2, Hikaridai, Seika-cho, Soraku-gun, Kyoto, Japan 6190288
| | - M. Kawato
- Center for Information and Neural Networks (CiNet), National Institute of Information and Communications Technology, 1-4 Yamadaoka, Osaka University Campus, Suita, Japan 5650871
- ATR Computational Neuroscience Laboratories, 2-2-2, Hikaridai, Seika-cho, Soraku-gun, Kyoto, Japan 6190288
| | - E. Burdet
- Department of Bioengineering, Imperial College of Science, Technology and Medicine, South Kensington, London UK SW72AZ
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Montoro Lopez M, Iniesta Manjavacas A, Mori Junco R, Pena Conde L, Pons De Antonio I, Garcia Blas S, Lopez Fernandez T, Moreno Gomez R, Moreno Yanguela M, Lopez Sendon J, Carro A, Kiotsekoglou A, Andoh J, Brown S, Kaski J, Imamura Y, Arai K, Uematsu S, Fukushima K, Hoshi H, Ashihara K, Takagi A, Hagiwara N, Gillis K, Bala G, Roosens B, Remory I, Droogmans S, Van Camp G, Cosyns B, Van De Heyning C, Magne J, Pierard L, Bruyere P, Davin L, De Maeyer C, Paelinck B, Vrints C, Lancellotti P, Borowiec A, Dabrowski R, Kowalik I, Firek B, Chwyczko T, Janas J, Szwed H, Tufaro V, Fragasso G, Ingallina G, Marini C, Fisicaro A, Loiacono F, Margonato A, Agricola E, Ferreira F, Pereira T, Abreu J, Labandeiro J, Fiarresga A, Ferreira A, Galrinho A, Branco L, Timoteo A, Ferreira R, Marmol R, Gomez M, Garcia K, Sanmiguel D, Cabades C, Monteagudo M, Nunez C, Fernandez C, Diez J, Roldan I, Kolesnyk M, Borowiec A, Dabrowski R, Kowalik I, Firek B, Chwyczko T, Janas J, Szwed H, Marini C, Tufaro V, Ancona M, Fisicaro A, Oppizzi M, Margonato A, Agricola E, Krestjyaninov M, Razin V, Gimaev R, Carminati M, Piazzese C, Tsang W, Lang R, Caiani E, Goncalves S, Ramalho A, Placido R, Marta L, Cortez Dias N, Magalhaes A, Menezes M, Martins S, Almeida A, Nunes Diogo A, Stokke TM, Ruddox V, Sarvari SI, Otterstad JE, Aune E, Edvardsen T, Pirone D, De Francesco V, Marino F, Gervasi F, Demartini C, Goffredo C, Bono M, Mega S, Chello M, Di Sciascio G, Martin Hidalgo M, Seoane Garcia T, Carrasco Avalos F, Mesa Rubio M, Delgado Ortega M, Ruiz Ortiz M, Mazuelos Bellido F, Suarez De Lezo Herrero De Tejada J, Pan Alvarez De Osorio M, Suarez De Lezo Cruz Conde J, Seoane Garcia T, Martin Hidalgo M, Carrasco Avalos F, Mesa Rubio M, Ruiz Ortiz M, Delgado Ortega M, Lopez Granados A, Romero Moreno M, Pan Alvarez-Ossorio M, Suarez De Lezo Cruz Conde J, Menichetti F, Bongiorni M, Ferro B, Segreti L, Bertini P, Mariotti R, Baldassarri R, Di Cori A, Zucchelli G, Guarracino F, Santoro A, Federco Alvino F, Giovanni Antonelli G, Raffaella De Vito R, Roberta Molle R, Sergio Mondillo S, Mahmoud Y, Abdel-Kader M, Guindy R, Elzahwy S, Dijkema E, Molenschot M, Slieker M, Oliveira Da Silva C, Sahlen A, Winter R, Back M, Ruck A, Settergren M, Manouras A, Shahgaldi K, Krestjyaninov M, Ruzov V. Club35 Poster Session Thursday 12 December: 12/12/2013, 08:30-18:00 * Location: Poster area. Eur Heart J Cardiovasc Imaging 2013. [DOI: 10.1093/ehjci/jet214] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Djordjevic V, Kovac M, Miljic P, Murata M, Takagi A, Pruner I, Francuski D, Kojima T, Radojkovic D. A novel prothrombin mutation in two families with prominent thrombophilia--the first cases of antithrombin resistance in a Caucasian population. J Thromb Haemost 2013; 11:1936-9. [PMID: 23927452 DOI: 10.1111/jth.12367] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Indexed: 11/29/2022]
Affiliation(s)
- V Djordjevic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia
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30
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Miura M, Yamasaki M, Takagi A, Miyauchi K, Tanaka H, Yoshikawa M, Miyachi H, Yamamoto T, Nagao K, Takayama M. Impact of statin administration on mortality in patients with acute myocardial infarction; multicenter registry from Tokyo CCU network database. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p4037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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31
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Kawabata A, Kobayashi T, Takagi A, Kuroyanagi F, Washino K, Sabashi K, Kitai N. Multidirectional lip-closing force in adults with mandibular deviation. J Oral Rehabil 2013; 40:664-9. [PMID: 23855528 DOI: 10.1111/joor.12078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/10/2013] [Indexed: 11/28/2022]
Affiliation(s)
- A. Kawabata
- Department of Orthodontics; School of Dentistry; Asahi University; Mizuho Japan
| | - T. Kobayashi
- Department of Orthodontics; School of Dentistry; Asahi University; Mizuho Japan
| | - A. Takagi
- Department of Orthodontics; School of Dentistry; Asahi University; Mizuho Japan
| | - F. Kuroyanagi
- Department of Orthodontics; School of Dentistry; Asahi University; Mizuho Japan
| | - K. Washino
- Department of Life Sciences; Gifu Shotoku Gakuen University Junior College; Gifu Japan
| | | | - N. Kitai
- Department of Orthodontics; School of Dentistry; Asahi University; Mizuho Japan
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Mizutani N, Kobayashi M, Sobue S, Ichihara M, Ito H, Tanaka K, Iwaki S, Fujii S, Ito Y, Tamiya-Koizumi K, Takagi A, Kojima T, Naoe T, Suzuki M, Nakamura M, Banno Y, Nozawa Y, Murate T. Sphingosine kinase 1 expression is downregulated during differentiation of Friend cells due to decreased c-MYB. Biochimica et Biophysica Acta (BBA) - Molecular Cell Research 2013; 1833:1006-16. [DOI: 10.1016/j.bbamcr.2013.01.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2012] [Revised: 12/23/2012] [Accepted: 01/02/2013] [Indexed: 12/19/2022]
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Takagi A, Nakamura A, Yoshikaie A, Yoshioka SI, Adachi S, Chichibu SF, Sota T. Signatures of Γ1-Γ5 mixed-mode polaritons in polarized reflectance spectra of ZnO. J Phys Condens Matter 2012; 24:415801. [PMID: 23006520 DOI: 10.1088/0953-8984/24/41/415801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Theoretical and experimental studies were carried out on exciton-polaritons excited in ZnO. Polaritons in which both Γ(1) and Γ(5) excitons couple to electromagnetic waves simultaneously are shown to exist, and their signatures are observed in polarized reflectance spectra measured under k is perpendicular to a and E is parallel to c configurations for an m-plane sample. Theoretical calculations reveal that the mixed-mode polaritons consist of one Γ(1) transverse mode and two Γ(5) longitudinal modes. It is also shown that the signatures are sensitive to the valence band ordering.
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Affiliation(s)
- Ayako Takagi
- Department of Electrical Engineering and Bioscience, Waseda University, Shinjuku, Tokyo, Japan
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Takagi A, Miyao M, Ishihara S, Sakakibara H, Kondo T, Toyoshima H, Kono K, Iguchi A. Sensitive pupil response of early-onset alzheimer's patients to a dilute mixture of cholinergic antagonist and α-Adrenergic stimulant. Environ Health Prev Med 2012; 4:49-53. [PMID: 21432171 DOI: 10.1007/bf02931250] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/1998] [Accepted: 01/18/1999] [Indexed: 10/21/2022] Open
Abstract
To investigate possible differences in pupil dilation and light reflex in Alzheimer's disease patients that can be attributed to the age of onset of the disease, a statistical comparison was made of pupil dilation and light reflex among early- and late-onset Alzheimer's disease, Down syndrome, and patients with vascular dementia, and normal controls. The subjects included 53 probable Alzheimer's disease outpatients, including both early-onset type (AD: n=21) and late-onset type (SD: n=32). They were compared with normal controls (n=15), Down syndrome patients (DS: n=6), and patients with vascular dementia (VD: n=9). All subjects and controls were dark-eyed Japanese. Pupil dilation and light reflex were tested in 21 AD and 32 SD patients, and were compared with those in the control subjects; 6 DS and 9 VD patients. The measured maximum increase in pupil diameter after instilling a mixture of anticholinergic and α -adrenergic stimulating drugs (Midrin-P®), in one eye was significantly greater in AD and DS than in the controls. However, there was no difference among SD, VD, and controls, suggesting a stronger pupil response to these drugs in AD than in SD. Pupil movement in response to light became significantly smaller and faster after instillation of the drugs in Alzheimer's disease patients. The above findings may be useful for the early detection of Alzheimer's disease.
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Affiliation(s)
- A Takagi
- Department of Public Health, Aichi
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Abstract
Fas, a cell surface receptor, mediates cell death by means of apoptosis in a variety of cell types. GnRH receptor-bearing tumors undergo apoptosis with GnRH analogs. To examine whether Fas and GnRH receptor share the same signal transduction pathway, we attempted to detect Fas-linked responses within plasma membrane isolated from GnRH receptor-bearing tumors. Surgically removed gynecological tumors were screened for Fas and GnRH receptor expression prior to analyses. The plasma membranes from these tumors responded to anti-Fas antibody (N-18) exposure with an inhibition in phosphatidylinositol (PtdIns) kinase activity, analogous to response to GnRH analog (buserelin) exposure; the activity was measured as phosphorylation from [gamma-P-32]ATP of exogenous substrate PtdIns by the purified plasma membranes. This inhibition was dependent on the N-18 dose, and a maximal effect occurred at 300 ng/ml with 60% decrease in PtdIns phosphorylation. The maximal inhibitory effects of N-18 and buserelin were not additive on PtdIns kinase inhibition; inhibition by both N-18 and GnRH analog was no greater than with either one alone. These data might suggest that there may be at least some similarity in signal transduction pathway utilized by GnRH analogs and Fas ligands.
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Affiliation(s)
- T Fuseya
- GIFU UNIV,SCH MED,DEPT OBSTET & GYNECOL,GIFU 500,JAPAN
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Fujita J, Miyawaki Y, Suzuki A, Maki A, Okuyama E, Murata M, Takagi A, Murate T, Suzuki N, Matsushita T, Saito H, Kojima T. A possible mechanism for Inv22-related F8 large deletions in severe hemophilia A patients with high responding factor VIII inhibitors. J Thromb Haemost 2012; 10:2099-107. [PMID: 22906111 DOI: 10.1111/j.1538-7836.2012.04897.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Intron 22 inversion (Inv22) of the coagulation factor (F)VIII gene (F8) is a frequent cause of severe hemophilia A. In addition to Inv22, a variety of F8 mutations (1492 unique mutations) causing hemophilia A have been reported, of which 171 involve deletions of over 50 bp (HAMSTeRs database; http://hadb.org.uk/). However, only 10% of these large deletions have been fully characterized at the nucleotide level. PATIENTS AND METHODS We investigated gene abnormalities in three unrelated severe hemophilia A patients with high titer FVIII inhibitors. They had previously been shown to carry large deletions of the F8, but the precise gene abnormalities remain to be elucidated. RESULTS Inverse shifting-PCR (IS-PCR) Inv22 diagnostic tests revealed that these patients carried either type I or II Inv22. However, they showed a wild-type (WT) pattern in the IS-PCR Inv22 complementary tests. We further analyzed their X chromosomes to account for the puzzling results, and found that they had different centromeric breakpoints in the Inv22 X chromosomes, adjacent to the palindromic regions containing int22h-2 or -3, and their spacer region, respectively. The connections appeared to be shifted towards the telomere of the WT F8 Xq28, resulting in a new telomere with an additional intact int22h copy. CONCLUSIONS These gene rearrangements might result from double-strand breaks in the most distal regions of the long arms of the Inv22 X chromosomes, followed by DNA restorations using the WT F8 Xq28 by non-homologous end joining or break-induced replication; thus leading to large F8 deletions in severe hemophilia A patients.
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Affiliation(s)
- J Fujita
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya Japan
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Kamijo M, Nishiyama C, Takagi A, Nakano N, Hara M, Ikeda S, Okumura K, Ogawa H. Cyclooxygenase-2 inhibition restores ultraviolet B-induced downregulation of ATP2A2/SERCA2 in keratinocytes: possible therapeutic approach of cyclooxygenase-2 inhibition for treatment of Darier disease. Br J Dermatol 2012; 166:1017-22. [PMID: 22413864 DOI: 10.1111/j.1365-2133.2011.10789.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
BACKGROUND ATP2A2 encoding the sarcoplasmic/endoplasmic reticulum Ca(2+) -ATPase2 (SERCA2) is a Darier disease (DD)-related gene. Ultraviolet (UV) B irradiation downregulates ATP2A2/SERCA2 expression in keratinocytes, whereas cyclooxygenase-2 (COX-2) expression is dramatically upregulated by UVB. OBJECTIVES To analyse the involvement of COX-2 in ATP2A2/SERCA2 expression. METHODS Keratinocytes were transfected with COX-2 siRNA or treated with COX-2 inhibitor, celecoxib, to evaluate the effect of COX-2 on ATP2A2/SERCA2 expression. Quantitative real-time polymerase chain reaction, Western blotting analysis and reporter assay were used to determine the amount of mRNA, protein level and transcription activity, respectively. RESULTS COX-2 knockdown by siRNA resulted in upregulation of ATP2A2 transcription. Treatment by celecoxib rescued UVB-mediated suppression of the ATP2A2 transcription and SERCA2 protein expression. Simple addition of prostaglandin (PG) E(2) , which is a product of COX-2 enzyme, reduced the amounts of ATP2A2 mRNA and SERCA2 protein in keratinocytes. CONCLUSIONS UVB downregulates ATP2A2/SERCA2 expression via induction of COX-2 expression and subsequent increase of PGE(2) production in keratinocytes. Considering that DD is caused by the decreased function of SERCA2 due to the reduced expression of the ATP2A2 gene, this finding shows the possibility that COX-2 inhibition may be useful to prevent and/or treat DD.
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Affiliation(s)
- M Kamijo
- Department of Dermatology, Juntendo University School of Medicine, Bunkyo-ku, Tokyo, Japan
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Suzuki T, Matsushima M, Tsukune Y, Fujisawa M, Yazaki T, Uchida T, Gocyo S, Okita I, Shirakura K, Sasao K, Saito T, Sakamoto I, Igarashi M, Koike J, Takagi A, Mine T. Double-balloon endoscopy versus magnet-imaging enhanced colonoscopy for difficult colonoscopies, a randomized study. Endoscopy 2012; 44:38-42. [PMID: 22143991 DOI: 10.1055/s-0030-1256875] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [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: 12/12/2022]
Abstract
BACKGROUND AND STUDY AIMS Studies have estimated that failure of cecal intubation occurs with conventional colonoscopy in up to 10 % of cases. Double-balloon endoscopy (DBE) systems, magnetic endoscope imaging (MEI), and transparent cap have been shown to improve success rates for colonoscopy. This study evaluated the utility of DBE for complete examination of the colon compared with MEI plus cap (MEI-Cap) after incomplete or technically difficult colonoscopy in a randomized comparative manner. PATIENTS AND METHODS A total of 94 patients with incomplete or technically difficult colonoscopy were randomly assigned to receive either DBE (n = 47) or colonoscopy with MEI-Cap (n = 47). The primary end point was cecal intubation rate within 30 minutes. Secondary end points included intubation time, pain score using a visual analog scale, abdominal pressure attempts, doses of sedative medication, and changes in patient position during colonoscopy. RESULTS Patient characteristics were comparable in both groups. Cecal intubation rate within 30 minutes was significantly higher for DBE (45 /47, 95.7 %) than for MEI-Cap (34 /47, 72.3 %) (P = 0.0049). Mean time to reach the cecum was significantly lower in the DBE group (13.0 ± 5.3 minutes) than in the MEI-Cap group (16.4 ± 4.8 minutes; P = 0.0003). No complications were encountered in either group. CONCLUSION DBE is more useful for complete examination of the colon than MEI-Cap in patients with incomplete or technically difficult colonoscopy.
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Affiliation(s)
- T Suzuki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Tokai University School of Medicine, Isehara, Kanagawa, Japan.
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Matsushima M, Suzuki T, Tajima K, Takagi A, Mine T. Education and imaging: gastrointestinal: colonic intusscusception to the rectum with a sigmoid colon cancer as a lead point. J Gastroenterol Hepatol 2011; 26:414. [PMID: 21261736 DOI: 10.1111/j.1440-1746.2010.06607.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Affiliation(s)
- M Matsushima
- Internal Medicine (Gastroenterology) Internal Medicine (General Internal Medicine), Tokai University School of Medicine, Tokyo, Japan
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Ito H, Murakami M, Hagiwara K, Sasaki N, Kobayashi M, Hoshikawa A, Takagi A, Kojima T, Banno Y, Tamiya-Koizumi K, Nakamura M, Nozawa Y, Murate T. The regulatory mechanism of NSMase2 gene expression by ATRA in MCF7 cells. Chem Phys Lipids 2010. [DOI: 10.1016/j.chemphyslip.2010.05.155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Ueda S, Matsumoto S, Takagi A, Yamane T. Synthesis of Poly(3-Hydroxybutyrate-Co-3-Hydroxyvalerate) from Methanol and n-Amyl Alcohol by the Methylotrophic Bacteria Paracoccus denitrificans and Methylobacterium extorquens. Appl Environ Microbiol 2010; 58:3574-9. [PMID: 16348804 PMCID: PMC183146 DOI: 10.1128/aem.58.11.3574-3579.1992] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Strains of two types of methylotrophic bacteria, Paracoccus denitrificans and Methylobacterium extorquens, synthesized the copolyester poly(3-hydroxybutyrate-co-3-hydroxyvalerate) when methanol and n-amyl alcohol were added together to nitrogen-limited medium. The composition of the copolyester differed considerably between the two strains: the copolyester from P. denitrificans was comparatively rich in 3-hydroxyvalerate (3HV). The 3HV content of the copolyester synthesized by this strain increased with increasing concentrations of n-amyl alcohol. Its maximum content was 91.5 mol% under the conditions used. In M. extorquens, the maximum 3HV content was limited to 38.2 mol%. Since n-amyl alcohol served as a substrate for a standard methanol dehydrogenase, the enzyme was proposed to oxidize both methanol and n-amyl alcohol in the first step of copolyester synthesis from these substrates by methanol-grown cells.
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Affiliation(s)
- S Ueda
- Laboratory of Bioreaction Engineering, Department of Food Science and Technology, School of Agricultural Sciences, Nagoya University, Nagoya 464-01, Japan
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Ikeda Y, Takagi A, Iwai N, Kokubo Y, Tomoike H. P301 ENVIRONMENTAL RISK FACTORS LEADING TO HYPERTRIGLYCERIDEMIA ON HETEROZYGOUS LIPOPROTEIN LIPASE (LPL) DEFICIENCY IDENTIFIED IN THE GENERAL POPULATION OF JAPANESE. ATHEROSCLEROSIS SUPP 2010. [DOI: 10.1016/s1567-5688(10)70368-8] [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: 11/24/2022]
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Takagi A, Nagano M, Iwanaga T, Ito N, Hattori H, Egashira T, Ikeda Y. P231 IDENTIFICATION OF COMPOUND HETEROZYGOUS DEFICIENCY WITH A NOVEL LARGE DELETION AND Y61X OF THE LIPOPROTEIN LIPASE GENE IN JAPANESE SUBJECT. ATHEROSCLEROSIS SUPP 2010. [DOI: 10.1016/s1567-5688(10)70298-1] [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]
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Niwa Y, Potaczek DP, Kanada S, Takagi A, Shimokawa N, Ito T, Mitsuishi K, Okubo Y, Tajima M, Hobo A, Ng W, Tsuboi R, Ikeda S, Ogawa H, Okumura K, Nishiyama C. FcεRIα gene (FCER1A) promoter polymorphisms and total serum IgE levels in Japanese atopic dermatitis patients. Int J Immunogenet 2010; 37:139-41. [DOI: 10.1111/j.1744-313x.2010.00901.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Nakamura S, Kajita S, Takagi A, Hashimoto Y, Ishida-Yamamoto A, Takahashi H, Iizuka H. Improvement in docetaxel-induced nail changes associated with cyclooxygenase-2 inhibitor treatment. Clin Exp Dermatol 2009; 34:e320-1. [DOI: 10.1111/j.1365-2230.2009.03275.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ito H, Murakami M, Hagiwara K, Yoshida K, Tagawa Y, Sasaki N, Takagi A, Kojima T, Banno Y, Tamiya-Koizumi K, Nozawa Y, Murate T. Daunorubicin-induced neutral sphingomyelinase 2 gene expression in MCF7 cells. Chem Phys Lipids 2009. [DOI: 10.1016/j.chemphyslip.2009.06.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Affiliation(s)
- A Imai
- Department of Obstetrics and Gynaecology, Gifu University School of Medicine, Japan.
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Furui T, Imai A, Takagi A, Tamaya T, Takagi H, Matsunami K, Shiraki S. Differential efficacy of gonadotropin-releasing hormone (GnRH) agonist treatment on pedunculated and degenerated myomas: a retrospective study of 630 women. J OBSTET GYNAECOL 2009; 20:504-6. [PMID: 15512637 DOI: 10.1080/014436100434703] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
This study was designed to compare the anatomical location of myomas (submucous, intramural, subserous, or cervical), whether pedunculated or non-pedunculated if degenerated or undegenerated and relating these findings to myoma volume reduction in women treated with gonadotropin-releasing hormone agonist (GnRHa). Our retrospective study group included 630 patients with symptoms attributed to fibroids. They were treated with a single GnRH agonist for 20 weeks and the size of the myoma was monitored by magnetic resonance imaging and/or ultrasonographic scan. During a 20 week-treatment, submucous, intramural, or subserous fibroids showed an overall reduction of 63% (P<0.01) with little variation between these types. No reduction in size was seen in cases of pedunculated, degenerated, or cervical myomas. These data suggest that GnRH agonist therapy might be used primarily for non-pedunculated and undegenerated myomas.
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Affiliation(s)
- T Furui
- Department of Obstetrics and Gynaecology, Gifu University School of Medicine, Japan.
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Takagi A, Nagano M, Iwanaga T, Ito N, Hattori H, Egashira T, Ikeda Y. Abstract: P1381 IDENTIFICATION OF COMPOUND HETEROZYGOUS DEFICIENCY WITH A NOVEL LARGE DELETION AND Y61X OF THE LIPOPROTEIN LIPASE GENE IN THE JAPANESE SUBJECT. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)71389-3] [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: 11/28/2022]
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