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Pooh RK, Takeda M, Itoh K, Yoshimatsu J, Ogo K, Machida M, Ohashi H, Shimokawa O. Open isthmus and lambda (Λ) sign of early Joubert syndrome: elucidating development of molar tooth sign. Ultrasound Obstet Gynecol 2024. [PMID: 38642341 DOI: 10.1002/uog.27666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 03/29/2024] [Accepted: 04/03/2024] [Indexed: 04/22/2024]
Affiliation(s)
- R K Pooh
- Fetal Brain Center, CRIFM Prenatal Medical Clinic, Osaka, Japan
- Department of Clinical Research, Ritz Medical Co. Ltd., Osaka, Japan
| | - M Takeda
- Department of Clinical Research, Ritz Medical Co. Ltd., Osaka, Japan
| | - K Itoh
- Department of Diagnostic Pathology, Kyoto Chubu Medical Center, Kyoto, Japan
| | - J Yoshimatsu
- Department of Obstetrics and Gynecology, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - K Ogo
- Department of Pathology, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - M Machida
- Fetal Brain Center, CRIFM Prenatal Medical Clinic, Osaka, Japan
| | - H Ohashi
- Department of Clinical Research, Ritz Medical Co. Ltd., Osaka, Japan
| | - O Shimokawa
- Department of Clinical Research, Ritz Medical Co. Ltd., Osaka, Japan
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Inui K, Mandai K, Maeda S, Masuda S, Yamada S, Ohashi H, Ikawa T. AB0971 Relationship between walking speed and lower limb skeletal muscle mass in patients with knee joint disorders. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundKnee joint disorder is one of the factors causing frailty in the elderly, which is associated with a decrease in walking speed.ObjectivesWe measured the walking speed of patients scheduled to undergo primary total knee arthroplasty (TKA) and examined factors correlated with walking speed.MethodsThe patients with knee disorders scheduled to undergo knee arthroplasty at our hospital between July 2020 and May 2021 were included. They were assessed for basic attributes, clinical assessment including Kness Society Score (KSS), degree of pain on walking by visual analogue scale (VAS), range of motion (ROM), and also leg skeletal muscle mass index (SMI; whole-body mode DXA), quadriceps strength by dynamometer with written consent (UMIN ID: 000040940). And Japanese Cardiovascular Health Study criteria for frailty, and sarcopenia by Asian Working Group for Sarcopenia 2019 criteria were evaluated.ResultsDemographic data of 83 patients (65 women, mean age 74.9 years) included in this study was shown in Table 1. The distribution in frailty is 36.2% and that in sarcopenia is 7.3%. Most of the patients with frailty with knee disorder did not suffer from sarcopenia. A multivariate analysis was conducted with walking speed as the objective variable and the dependent variables as age, gender, pain VAS on walking, KSS, leg SMI, quadriceps strength, and ROM. The results showed that age and ROM in flexion were significantly and independently associated with walking speed (P=0.01, 0.03). Gender, pain VAS on walking, KSS, leg SMI, quadriceps strength, and ROM in extension were not significantly associated with walking speed (P=0.92, 0.11, 0.11, 0.52, 0.85, 0.52).ConclusionAmong the patients with knee disorders immediately before arthroplasty, frailty was not caused by sarcopenia. Age was found to be the most correlated factor with walking speed, and walking speed became slower with age. In addition, poor flexion angle was also the factor for delayed walking speed, but it did not correlate with lower limb skeletal muscle mass or quadriceps strength. In this study pain on walking was not significant factor for walking speed, because it was observed in most of all cases.FactorGroup disease (n)osteoarthritis78 (94%) rheumatoid arthritis5 (6.0%)body mass index (kg/m2) 25.54 (4.11)pain VAS on walking 37.08 (26.35)total Knee Society Score 77.66 (27.85)range of motion (degree)flexion119.46 (12.88) extension-9.58 (6.59)quadriceps power (N) 122.00 [53.00, 350.00]waling speed (m/sec) 0.95 (0.33)grip power (kg) 20.24 (6.97)skeletal muscle mass index (kg/m2)appendicular6.50 [4.92, 9.85] lower limb5.06 [3.76, 7.56]Frailty (n)none10 (12.5%)Pre-frail41 (51.2%) frail29 (36.2%)Sarcopenia (n)none76 (92.7%)sarcopenia4 (4.9%) severe sarcopenia2 (2.4%)mean (standard deviation); median [min max]Disclosure of InterestsNone declared
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Izawa N, Shiokawa H, Onuki R, Hamaji K, Morikawa K, Saji H, Ohashi H, Kasugai S, Hayakawa N, Ohara T, Sunakawa Y. The clinical utility of comprehensive measurement of autoimmune disease-related antibodies in patients with advanced solid tumors receiving immune checkpoint inhibitors: a retrospective study. ESMO Open 2022; 7:100415. [PMID: 35247869 PMCID: PMC9058890 DOI: 10.1016/j.esmoop.2022.100415] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 12/18/2021] [Accepted: 01/19/2022] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND The comprehensive measurement of autoimmune disease-related antibodies (Abs) before immune checkpoint inhibitor (ICI) treatment may be useful for predicting the development of immune-related adverse events (irAEs); however, the clinical utility is not well known. MATERIALS AND METHODS We retrospectively analyzed patients with advanced solid tumors treated with ICI monotherapy or doublet combination therapy between July 2014 and December 2020 at single institute. Anti-nuclear antibody (ANA), anti-thyroglobulin (Tg) Ab, anti-thyroid peroxidase (TPO) Ab, anti-glutamic acid decarboxylase (GAD) Ab, anti-acetylcholine esterase receptor (AchR) Ab, and platelet-associated immunoglobulin G (PA-IgG) Ab were comprehensively measured for the screening before ICI therapy. RESULTS Of 275 registered patients (median age, 70 years; male, 64.4%; Eastern Cooperative Oncology Group performance status of 0 or 1, 88.7%; and prior regimen of 0-1/≥2, 88.7%/11.3%), 128 non-small-cell lung cancer, 35 gastric cancer, 33 head and neck cancer, 24 melanoma, 19 renal cell carcinoma, 13 urothelial carcinoma, 12 esophageal cancer, 5 malignant mesothelioma of pleura, 2 endometrial cancer, and 4 other cancer were included. The number of patients with positive ANA, Tg, TPO, PA-IgG, GAD, and AchR Abs was 52 (24.9%), 38 (14.5%), 11 (10.1%), 6 (3.5%), 5 (2.0%), and 1 (0.5%), respectively. There was no association between the development of any irAEs and Abs positivity, while thyroid dysfunction developed more frequently among patients with than without Tg Ab or TPO Ab (39.5% versus 12.5%, P < 0.01; 45.5% versus 14.3%, P = 0.02). CONCLUSIONS The clinical utility of comprehensive measurement of autoimmune disease-related Abs before introduction of ICI therapy was limited for predicting irAE. However, Tg and TPO Abs were risk factors as regards the development of ICI-induced thyroid dysfunction.
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Affiliation(s)
- N Izawa
- Department of Clinical Oncology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - H Shiokawa
- Department of Pharmacy, St. Marianna University Hospital, Kawasaki, Japan
| | - R Onuki
- Department of Pharmacy, St. Marianna University Hospital, Kawasaki, Japan
| | - K Hamaji
- Department of Pharmacy, St. Marianna University Hospital, Kawasaki, Japan
| | - K Morikawa
- Department of Internal Medicine, Division of Respiratory Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - H Saji
- Department of Chest Surgery, St. Marianna University School of Medicine, Kawasaki, Japan
| | - H Ohashi
- Department of Dermatology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - S Kasugai
- Department of Otorhinolaryngology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - N Hayakawa
- Department of Urology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - T Ohara
- Department of Obstetrics and Gynecology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Y Sunakawa
- Department of Clinical Oncology, St. Marianna University School of Medicine, Kawasaki, Japan.
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Horita M, Nishida K, Kaneda D, Hashizume K, Nasu Y, Nakahara R, Saiga K, Ohashi H, Watanabe M, Ozaki T. Subjective and Objective Outcomes of Surgery for Rheumatoid Forefoot Deformities Under the Current Treatment Paradigm. J Foot Ankle Surg 2022; 61:53-59. [PMID: 34303577 DOI: 10.1053/j.jfas.2021.06.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 12/16/2020] [Accepted: 06/08/2021] [Indexed: 02/03/2023]
Abstract
We investigated the clinical outcomes of surgical procedures for the treatment of forefoot deformities in patients with rheumatoid arthritis. Twenty feet in 16 women (mean age 62.1 years) underwent corrective osteotomy of the first metatarsal bone with shortening oblique osteotomy of the lesser metatarsophalangeal joints (joint-preservation group), while 13 feet in 12 women (mean age 67.4 years) underwent arthrodesis of the first metatarsophalangeal joint with resection arthroplasty of the lesser metatarsophalangeal joints (joint-sacrifice group); mean follow-up for each group was 25.8 and 23.8 months, respectively. The mean total Japanese Society for Surgery of the Foot (JSSF) scale improved significantly from 64.2 to 89.2 in the joint-preservation group (p < .001), and from 54.2 to 74.2 in the joint-sacrifice group (p = .003). In the joint-preservation group, the postoperative range of motion (ROM) of the joint, walking ability, and activities of daily living scores of the JSSF scale were significantly higher than those in the joint-sacrifice group (p = .001, p = .001, and p = .019, respectively). There were no differences in the subscale scores of the self-administered foot evaluation questionnaire between 2 groups either pre- or postoperatively. No differences in the postoperative complications were found between 2 groups. Although the joint-sacrificing procedure resulted in lower objective outcomes than the joint-preserving procedure regarding the ROM of the joint, the walking ability, and the level of activities of daily living, both procedures resulted in similar treatment outcomes when evaluated by the subjective measures.
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Affiliation(s)
- Masahiro Horita
- Orthopaedic Surgeon, Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Keiichiro Nishida
- Associate Professor, Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.
| | - Daisuke Kaneda
- Orthopaedic Surgeon, Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kenzo Hashizume
- Orthopaedic Surgeon, Department of Rehabilitation, Japan Labour Health and Welfare Organization, Okayama Rosai Hospital, Okayama, Japan
| | - Yoshihisa Nasu
- Assistant Professor, Department of Orthopaedic Surgery, Okayama University Hospital, Okayama, Japan
| | - Ryuichi Nakahara
- Assistant Professor, Department of Orthopaedic Surgery, Okayama University Hospital, Okayama, Japan
| | - Kenta Saiga
- Assistant Professor, Department of Orthopaedic Surgery, Okayama University Hospital, Okayama, Japan
| | - Hideki Ohashi
- Orthopaedic Surgeon, Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Masahito Watanabe
- Orthopaedic Surgeon, Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Toshifumi Ozaki
- Professor, Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Ohashi H, Takashima H, Nawano T, Ando H, Nakano Y, Sakurai S, Suzuki A, Suzuki W, Amano T. Differential impact of renal function on the diagnostic performance of resting full-cycle ratio as non-hyperemic physiological assessment. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1403] [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
Fractional flow reserve (FFR) is a gold standard method to evaluate functional lesion severity in daily clinical practice. Recently, the resting full-cycle ratio (RFR) was Previous studies showed the better diagnostic performance of RFR comparing with FFR. It is well known that patients with chronic kidney disease (CKD) have poor prognosis. Therefore, we should carefully assess the functional lesion severity in CKD patients. However, it is unclear whether the diagnostic performance of RFR for detecting functional ischemia is similar regardless of the degree of renal function. The aim of this study is to compare the diagnostic performance of RFR based on renal function.
Method
This study was a prospectively enrolled observational study. A total of 265 consecutive patients with 373 intermediate lesions were enrolled in this study. There were classified into three groups according to renal function (Group 1: eGFR ≥60 mL/min/1.73m2; Group 2: 30 mL/min/1.73m2 ≤eGFR <60 mL/min/1.73m2; Group 3: eGFR <30mL/min/1.73m2). The RFR was measured after adequately waiting for stable condition, while FFR was measured after intravenous administration of ATP (180mcg/kg/min). The discordance between FFR and RFR were assessed the data using known cutoffs for FFR (≤0.80) and RFR (≤0.89).
Results
Of 373 lesions, the median age was 70.1±11.0 years. Functional significance was observed in 153 lesions (41.0%) of all lesions. RFR showed a significant correlation with FFR in each group (Group 1; r2=0.63 [p<0.001], Group 2: r2=0.67 [p<0.001], Group 3: r2=0.51 [p<0.001], respectively). The ROC curve analysis of RFR showed differential results for predicting functional significance (Group 1: AUC 0.88, cut-off value 0.91; Group 2: AUC 0.88, cut-off value 0.89; Group 3: AUC 0.81, cut-off value 0.83; respectively) in each group. The prevalence of discordant between RFR and FFR was significantly different among 3 groups (Group 1: 16.5%, Group 2: 19.4%, Group 3: 25.0%, respectively, p<0.05 for among 3 groups).
Conclusion
The diagnostic performance of RFR was different based on renal function. During RFR acquisition, the degree of renal function could influence concordance with FFR, and should be taken into account when interpreting RFR.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- H Ohashi
- Aichi medical university, Aichi, Japan
| | | | - T Nawano
- Aichi medical university, Aichi, Japan
| | - H Ando
- Aichi medical university, Aichi, Japan
| | - Y Nakano
- Aichi medical university, Aichi, Japan
| | - S Sakurai
- Aichi medical university, Aichi, Japan
| | - A Suzuki
- Aichi medical university, Aichi, Japan
| | - W Suzuki
- Aichi medical university, Aichi, Japan
| | - T Amano
- Aichi medical university, Aichi, Japan
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Ohashi H, Nishida K, Nasu Y, Saiga K, Nakahara R, Horita M, Okita S, Ozaki T. A Novel Radiographic Measurement Method for the Evaluation of Metatarsophalangeal Joint Dislocation of the Lesser Toe in Patients with Rheumatoid Arthritis. Int J Environ Res Public Health 2021; 18:ijerph18147520. [PMID: 34299970 PMCID: PMC8303857 DOI: 10.3390/ijerph18147520] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 07/10/2021] [Accepted: 07/12/2021] [Indexed: 11/18/2022]
Abstract
Dorsal dislocation of metatarsophalangeal (MTP) joints of the lesser toe frequently occurs in patients with rheumatoid arthritis (RA), and may cause painful and uncomfortable plantar callosities and ulceration. The current study examined the reliability and clinical relevance of a novel radiographic parameter (the MTP overlap distance [MOD]) in evaluating the severity of MTP joint dislocation. The subjects of the current study were 147 RA patients (276 feet; 1104 toes). MOD, defined as the overlap distance of the metatarsal head and the proximal end of the phalanx, was measured on plain radiographs. The relationship between the MOD and clinical complaints (forefoot pain and/or callosity formation) was analyzed to create a severity grading system. As a result, toes with callosities had a significantly larger MOD. ROC analysis revealed that the MOD had a high AUC for predicting an asymptomatic foot (−0.70) and callosities (0.89). MOD grades were defined as follows: grade 1, 0 ≤ MOD < 5 mm; grade 2, 5 ≤ MOD < 10 mm; and grade 3, MOD ≥ 10 mm. The intra- and inter-observer reliability of the MOD grade had high reproducibility. Furthermore, the MOD and MOD grade improved significantly after joint-preserving surgeries for lesser toe deformities. Our results suggest that MOD and MOD grade might be useful tools for the evaluation of deformities of the lesser toe and the effect of surgical intervention for MTP joints in patients with RA.
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Affiliation(s)
- Hideki Ohashi
- Department of Orthopaedic Surgery, Takahashi Central Hospital, Okayama 716-0033, Japan;
| | - Keiichiro Nishida
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (M.H.); (T.O.)
- Correspondence: ; Tel.: +81-86-235-7273
| | - Yoshihisa Nasu
- Department of Orthopaedic Surgery, Okayama University Hospital, Okayama 700-8558, Japan; (Y.N.); (K.S.); (R.N.)
| | - Kenta Saiga
- Department of Orthopaedic Surgery, Okayama University Hospital, Okayama 700-8558, Japan; (Y.N.); (K.S.); (R.N.)
| | - Ryuichi Nakahara
- Department of Orthopaedic Surgery, Okayama University Hospital, Okayama 700-8558, Japan; (Y.N.); (K.S.); (R.N.)
| | - Masahiro Horita
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (M.H.); (T.O.)
| | - Shunji Okita
- Department of Orthopaedic Surgery, Okayama City Hospital, Okayama 700-0962, Japan;
| | - Toshifumi Ozaki
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (M.H.); (T.O.)
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Takeshita A, Nishida K, Yoshida A, Nasu Y, Nakahara R, Kaneda D, Ohashi H, Ozaki T. RANKL expression in chondrocytes and its promotion by lymphotoxin-α in the course of cartilage destruction during rheumatoid arthritis. PLoS One 2021; 16:e0254268. [PMID: 34234380 PMCID: PMC8263262 DOI: 10.1371/journal.pone.0254268] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 06/23/2021] [Indexed: 11/19/2022] Open
Abstract
We investigated the expression and localization of the receptor activator nuclear factor κB ligand (RANKL) in cartilage from patients with rheumatoid arthritis (RA) of relevance to cartilage degeneration. We also examined the role of exogenous lymphotoxin (LT)-α on RANKL expression in human chondrocytes and its effect on in vitro osteoclast differentiation. Cartilage and synovial fluid samples were obtained from 45 patients undergoing total joint replacement surgery or joint puncture, including 24 patients with osteoarthritis (OA) and 21 patients with RA. RANKL expression in articular cartilage was examined by immunohistochemistry. LT-α concentrations in synovial fluid were measured using an enzyme-linked immunosorbent assay (ELISA). Normal human chondrocytes were stimulated with LT-α, and the relative mRNA levels of RANKL, osteoprotegerin (OPG), matrix metalloproteinase-9, and vascular endothelial growth factor were examined by real-time polymerase chain reaction. Soluble RANKL protein in culture media was measured using ELISA, and membrane-bound RANKL protein in cells was examined by western blotting. Co-cultures of human chondrocytes with peripheral blood mononuclear cells (PBMCs) were stimulated with macrophage-colony stimulating factor and LT-α, and osteoclast differentiation was evaluated by staining for tartrate-resistant acid phosphatase. LT-α concentrations were higher in RA synovial fluid than in OA samples. The population of RANKL-positive chondrocytes of RA cartilage was higher than that of OA cartilage, and correlated with cartilage degeneration. Stimulation of cultured human chondrocytes by LT-α increased RANKL expression, the RANKL/OPG ratio, and angiogenic factors. Membrane-bound RANKL in chondrocytes was up-regulated after stimulation of LT-α, whereas soluble RANKL in culture medium did not increase. Co-cultures of human chondrocytes and PBMCs demonstrated that LT-α stimulated human chondrocytes to produce RANKL and induced osteoclastic differentiation of PBMCs. RANKL produced by chondrocytes may contribute to cartilage destruction during RA and LT-α could promote the expression of RANKL in human chondrocytes.
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Affiliation(s)
- Ayumu Takeshita
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Keiichiro Nishida
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
- * E-mail:
| | - Aki Yoshida
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Yoshihisa Nasu
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Ryuichi Nakahara
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Daisuke Kaneda
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hideki Ohashi
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Toshifumi Ozaki
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Inui K, Mandai K, Ikawa T, Minami Y, Ueno K, Ohashi H. AB0583 FRAILTY IN THE PATIENTS WITH OSTEOARTHRITIS OF THE KNEE WAS NOT CAUSED BY SARCOPENIA. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.416] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Osteoarthritis of the knee (knee OA) decreases mobility of the elderly, which function could be significantly improved with artificial joint replacement in many cases. Successful results of the surgery depend on several factors including preoperative muscle strength of lower limbs.Objectives:We assessed morbidity and skeletal muscle mass and strength in patients with knee OA immediately before undergoing arthroplasty and investigated the relationship between impairment of mobility and skeletal muscle function.Methods:All patients scheduled to undergo knee arthroplasty at our hospital after July 2020 were assessed for basic attributes, clinical assessment, blood tests, radiography, whole-body mode DXA, knee muscle strength by dynamometer with written consent (UMIN ID: 000040940). And Japanese Cardiovascular Health Study criteria for frailty, and sarcopenia by Asian Working Group for Sarcopenia 2019 criteria were evaluated.Results:Among 46 patients (40 women, mean age 75.4 years) the overall distribution in frailty is no: 15.9%, pre-frailty: 56.8%, and frailty: 27.3%. That in sarcopenia is no: 91.3%, yes: 2.2%, and severe: 4.3%. Ninety-one % of the patients with frailty did not suffer from sarcopenia. Between the patients with frailty and those without frailty there was a significant difference in walking speed (0.71±0.29m/sec, 1.12±0.29m/sec; p=0.004 adjusted by age and sex). Meanwhile, between those 2 groups of patients no significant differences were observed in skeletal muscle mass (6.40±0.87 kg/m2, 6.59±1.09 kg/m2; p=0.35) and knee extension power (120.4±37.4 N, 143.7±67.9 N; p=0.88) adjusted by age and sex. Together with these results, decrease in lower limb motor functions of the patients with knee OA was not caused by sarcopenia. In other words, improvement of mobility in the patients with knee OA could be expected by surgical intervention because of pain relief and ROM improvement.Conclusion:In the patients with knee OA immediately before arthroplasty, frailty was not caused by sarcopenia.Disclosure of Interests:None declared.
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Nakano Y, Onishi T, Suzuki M, Niwa T, Mukai K, Ando H, Ohashi H, Waseda K, Takashima H, Amano T. Clinical impact of triglyceride deposit cardiomyovasculopathy, coronary atherosclerosis with triglyceride deposition, on vascular failure after drug-eluting stent implantation. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Triglyceride deposit cardiomyovasculopathy (TGCV) is a novel cardiovascular disorder, encoded as orphan disease in Europe in 2019, characterized by excessive accumulation of triglyceride in vascular smooth muscle cells, leading to coronary artery disease (CAD). However, there is no data about impact of TGCV on vascular failure after coronary stent implantation.
Purpose
To assess impact of TGCV on the outcome following coronary stent implantation in CAD patients with diabetes mellitus (DM) as Study 1, and chronic hemodialysis as Study 2.
Methods
This is multicenter retrospective estimation consisting of two studies.
Study 1) Among 526 consecutive patients suspected of having CAD who underwent coronary angiography (CAG) and iodine-123-β-methyliodophenyl-pentadecanoic acid (BMIPP) scintigraphy, a tracer for the diagnosis of TGCV, data from 81 patients with DM were analyzed.
The patients were divided into two groups; TGCV (n=7) or non-TGCV (n=74). All patients were implanted with a second-generation DES and underwent follow-up CAG. Binary restenosis (ISR), defined as angiographic luminal diameter >50% by quantitative coronary angiography, in-stent late loss were assessed in 15 stents of TGCV patients and 111 stents of non-TGCV patients.
Study 2) Similarly, among 88 chronic hemodialysis patients, ISR and in-stent late loss were assessed in 12 stents of 9 TGCV patients and 21 stents of 17 non-TGCV patients.
Results
Study 1) There were no significant differences in baseline characteristics between the two groups. In-stent late loss was greater in TGCV group than in non-TGCV group (0.91mm [0.27, 2.39] vs. 0.15mm [0.03, 0.35]; p<0.001), resulting in greater incidence of ISR in TGCV group than in non-TGCV group (46.7% vs. 9.0%; p<0.001). Multivariable logistic analysis revealed TGCV to be an independent predictor for vascular failure after DES implantation in patients with DM.
Study 2) Similarly, in-stent late loss and incidence of ISR were greater in TGCV group than in non-TGCV group (1.20±0.99mm vs. 0.50±0.70, p=0.02; 58.3% vs. 9.5%, p=0.002, respectively). TGCV was an independent predictor for vascular failure after DES implantation in chronic hemodialysis patients.
Conclusion
Apart from existing risk factors such as DM and hemodialysis, TGCV could contribute to a novel risk factor for vascular failure, even in the second-generation DES era.
Figure 1
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- Y Nakano
- Aichi Medical University, Nagakute, Japan
| | - T Onishi
- Aichi Medical University, Nagakute, Japan
| | - M Suzuki
- Aichi Medical University, Nagakute, Japan
| | - T Niwa
- Narita Memorial Hospital, Cardiology, Toyohashi, Japan
| | - K Mukai
- Aichi Medical University, Nagakute, Japan
| | - H Ando
- Aichi Medical University, Nagakute, Japan
| | - H Ohashi
- Aichi Medical University, Nagakute, Japan
| | - K Waseda
- Aichi Medical University, Nagakute, Japan
| | | | - T Amano
- Aichi Medical University, Nagakute, Japan
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Takashima H, Ohashi H, Ando H, Suzuki A, Sakurai S, Nakano Y, Sawada H, Fujimoto M, Naito K, Tanabe S, Suzuki W, Waseda K, Amano T. Differential impact of target vessel on the diagnostic performance of resting full-cycle ratio as non-hyperemic physiological assessment. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2480] [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
Recently, wire-based resting indices have been recognized as gold standard for evaluating physiological lesion assessment. The resting full-cycle ratio (RFR) is a unique resting index which is calculated as the point of absolutely lowest distal pressure to aortic pressure during entire cardiac cycle. It is unclear whether the diagnostic performance of RFR for detecting functional coronary artery stenosis is similar in each coronary artery. The aim of this study is to compare the diagnostic performance of RFR based on target coronary vessel.
Method
This study was a prospectively enrolled observational study. A total of 156 consecutive patients with 220 intermediate lesions were enrolled in this study. The RFR was measured after adequately waiting for stable condition, while FFR was measured after intravenous administration of ATP (180mcg/kg/min). Lesions with FFR ≤0.80 were considered functionally significant coronary artery stenosis.
Results
In all lesions, reference diameter, diameter stenosis, lesion length, RFR, and FFR were 3.0±0.7mm, 45±13%, 13.0±8.8mm, 0.90±0.09, and 0.82±0.10, respectively. Functional significance was observed in 88 lesions (40%) of all lesions. RFR showed a significant correlation with FFR in overall lesions (r=0.774, p<0.001). The ROC curve analysis of RFR showed good accuracy for predicting functional significance (AUC 0.87, diagnostic accuracy 81%) in all subjects. Regarding each target vessel, there were similar and significant positive correlation between RFR and FFR (LAD; r=0.733, p<0.001, LCX; r=0.771, p<0.001, RCA; r=0.769, p<0.001, respectively). The prevalence of discordant between RFR and FFR was significantly different among 3 vessels (LAD 26%, LCX 12%, RCA 13%, respectively, p<0.05 for among 3 groups). Regarding the comparison of ROC curves according to lesion location, AUC was significantly lower in LAD than in LCX and RCA (LAD 0.780, LCX 0.947, RCA 0.926, p<0.01 for LAD compared to LCX, p<0.01 for LAD compared to RCA, respectively). Furthermore, the diagnostic accuracy was significantly different according to target vessel (LAD 74%, LCX 88%, RCA 87%, respectively, p<0.05 for among 3 vessels).
Conclusion
RFR demonstrated better diagnostic accuracy for evaluating functional lesion severity. The diagnostic performance of RFR was different based on target vessel. RFR is a unique and useful resting index, and it may detect functionally significant coronary stenosis that cannot be detected with other resting indices in daily practice.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
| | - H Ohashi
- Aichi Medical University, Nagakute, Japan
| | - H Ando
- Aichi Medical University, Nagakute, Japan
| | - A Suzuki
- Aichi Medical University, Nagakute, Japan
| | - S Sakurai
- Aichi Medical University, Nagakute, Japan
| | - Y Nakano
- Aichi Medical University, Nagakute, Japan
| | - H Sawada
- Aichi Medical University, Nagakute, Japan
| | - M Fujimoto
- Aichi Medical University, Nagakute, Japan
| | - K Naito
- Aichi Medical University, Nagakute, Japan
| | - S Tanabe
- Aichi Medical University, Nagakute, Japan
| | - W Suzuki
- Aichi Medical University, Nagakute, Japan
| | - K Waseda
- Aichi Medical University, Nagakute, Japan
| | - T Amano
- Aichi Medical University, Nagakute, Japan
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11
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Ohashi H, Takashima H, Ando H, Suzuki A, Sakurai S, Nakano Y, Sawada H, Fujimoto M, Suzuki W, Waseda K, Amano T. Discordance predictor between fractional flow reserve and resting full-cycle ratio in clinical characteristics. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Fractional flow reserve (FFR) is a gold standard method to evaluate functional lesion severity in daily clinical practice. Recently, the resting full-cycle ratio (RFR) which was newly developed resting indices was launched. Unlike other resting indices evaluated in diastolic phase, RFR is evaluated during entire cardiac phase. Previous studies showed discordance predictors between FFR and instantaneous wave-free ratio. However, it is previously unreported what predictor cause discordant outcome between FFR and RFR.
Purpose
The purpose of this study was to evaluate clinical predictors of discordance between FFR and RFR.
Methods
A total of 156 patients with 220 lesions were prospectively enrolled in this study. RFR was evaluated before inducing hyperemia. FFR was measured after intravenous adenosine triphosphate administration (180 mcg/kg/min). According to FFR and RFR values, the patients and lesions were classified into 4 groups: Concordant negative (Group-1 [n=114]: FFR >0.80, RFR >0.89); negative FFR and positive RFR (Group-2 [n=18]: FFR >0.80, RFR ≤0.89); positive FFR and negative RFR (Group-3 [n=25]: FFR ≤0.80, RFR >0.89); Concordant positive (Group-4 [n=63]: FFR ≤0.80, RFR ≤0.89). Among them, discordance predictors with clinical characteristics between RFR and FFR were compared using by two separate logistic regression analyses. (Group-1 vs. Group-2, Group-3 vs. Group-4, respectively). Age, sex and those predictors with a p value ≤0.10 were included in a multivariate regression analysis using by forward stepwise selection to identify independent predictors of discordance.
Results
On multiple regression analysis, hemodialysis (HD) (OR:6.072 [1.090–33.836]), peripheral artery disease (PAD) (OR:9.053 [1.776–46.162]) and left anterior descending artery (LAD) (OR:9.264 [2.092–41.031]) were significantly associated with positive RFR among negative FFR groups (Groupe 2 discordance). Conversely, diabetes mellitus (DM) (OR:0.212 [0.062–0.721]) and Hb (OR:1.480 [1.102–1.987]) were significantly associated with negative RFR among positive FFR groups (Groupe 3 discordance)
Conclusions
Since the clinical characteristics with HD, PAD, LAD, DM and Hb may influence concordant with FFR during RFR evaluation, it should be considered when interpreting RFR.
Distribution and independent predictors
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- H Ohashi
- Aichi medical university, Aichi, Japan
| | | | - H Ando
- Aichi medical university, Aichi, Japan
| | - A Suzuki
- Aichi medical university, Aichi, Japan
| | - S Sakurai
- Aichi medical university, Aichi, Japan
| | - Y Nakano
- Aichi medical university, Aichi, Japan
| | - H Sawada
- Aichi medical university, Aichi, Japan
| | | | - W Suzuki
- Aichi medical university, Aichi, Japan
| | - K Waseda
- Aichi medical university, Aichi, Japan
| | - T Amano
- Aichi medical university, Aichi, Japan
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Takashima H, Ohashi H, Ando H, Sakurai S, Nakano Y, Suzuki A, Sawada H, Fujimoto M, Waseda K, Amano T. Diagnostic feasibility of resting full-cycle ratio between systole and diastole to assess functional lesion severity of intermediate coronary artery stenosis. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Recently, non-hyperemic physiologic indices have become widespread for evaluating physiological lesion assessment. The resting full-cycle ratio (RFR) is a unique non-hyperemic index which is calculated as the point of absolutely lowest distal pressure to aortic pressure during entire cardiac cycle. It is unclear whether RFR may detect functionally significant coronary stenosis that cannot be detected with other resting indices due to differences in the cardiac cycle. The aim of this study is to compare the diagnostic performance of RFR based on cardiac cycle.
Method
This study was a prospectively enrolled observational study. A total of 156 consecutive patients with 220 intermediate lesions were enrolled in this study. The RFR was measured after adequately waiting for stable condition, while FFR was measured after intravenous administration of ATP (180mcg/kg/min). Lesions with FFR ≤0.80 were considered functionally significant coronary artery stenosis.
Results
In all lesions, reference diameter, diameter stenosis, lesion length, RFR, and FFR were 3.0±0.7mm, 45±13%, 13.0±8.8mm, 0.90±0.09, and 0.82±0.10, respectively. Functional significance was observed in 88 lesions (40%) of all lesions. RFR systole was observed in 24 lesions (10.9%). Regarding to the coronary lesions, RFR systole was more frequent in non-LAD (LAD; 4.2%, left circumflex artery (LCX); 9.8%, and right coronary artery (RCA); 30.4%, respectively, p<0.018). RFR showed a significant correlation with FFR in both systole and diastole (R = 0.918, p<0.001, R = 0.733, p<0.001, respectively). The ROC curve analysis showed similar agreement in both systole and diastole (AUC: 0.881, p<0.001, AUC: 0.864, p<0.001, respectively). RFR provided a good diagnostic accuracy and no difference in both systole and diastole (79.6% and 87.5%, respectively, p=0.58).
Conclusion
RFR is feasible and reliable non-hyperemic index regardless of the difference of cardiac cycle to evaluate physiological lesion severity in daily practice.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
| | - H Ohashi
- Aichi Medical University, Nagakute, Japan
| | - H Ando
- Aichi Medical University, Nagakute, Japan
| | - S Sakurai
- Aichi Medical University, Nagakute, Japan
| | - Y Nakano
- Aichi Medical University, Nagakute, Japan
| | - A Suzuki
- Aichi Medical University, Nagakute, Japan
| | - H Sawada
- Aichi Medical University, Nagakute, Japan
| | - M Fujimoto
- Aichi Medical University, Nagakute, Japan
| | - K Waseda
- Aichi Medical University, Nagakute, Japan
| | - T Amano
- Aichi Medical University, Nagakute, Japan
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Saiga K, Yokoo S, Ohashi H, Horita M, Furumatsu T, Ozaki T. Effect of Lateral Gutter Osteophyte Resection on Correction of Varus Deformity in Arthroscopic Ankle Arthrodesis. Foot Ankle Int 2020; 41:683-688. [PMID: 32131624 DOI: 10.1177/1071100720910388] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Recently, arthroscopic ankle arthrodesis has been performed for moderate-to-severe varus-deformed ankle osteoarthritis. However, the effect of osteophyte resection in the lateral gutter in arthroscopic ankle arthrodesis has not been clarified. We hypothesized that a varus-deviated ankle with lateral gutter osteophytes can be corrected by osteophyte resection. METHODS Thirty-nine ankles of 38 patients were included. The mean age of patients was 70.0 (45-83) years. The patients were divided into the following groups: group with an osteophyte in the lateral gutter (osteophyte) and group with no osteophytes (nonosteophyte). Preoperative and postoperative tibiotalar angle, tibial plafond angle, and tibiotalar angle under valgus stress, as well as the Japanese Society for Surgery of the Foot (JSSF) ankle/hindfoot scale, were recorded. Twelve ankles underwent lateral gutter osteophyte resection, whereas the other 27 ankles did not require osteophyte resection. RESULTS Preoperative tibiotalar angle was higher in the osteophyte group than in the nonosteophyte group (21.8 vs 11.2 degrees, P = .01). The tibiotalar angle in the preoperative valgus stress imaging was higher in the osteophyte group (12.9 vs 5.7, P < .01). However, the postoperative tibiotalar angle was similar between the 2 groups (7.1 vs 5.4, P = .183). JSSF ankle/hindfoot scale improved in both groups. CONCLUSION Lateral gutter osteophyte resection enabled correction of the varus malalignment in arthroscopic ankle arthrodesis. LEVEL OF EVIDENCE Level III, retrospective comparative series.
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Affiliation(s)
- Kenta Saiga
- Department of Orthopaedic Surgery, Okayama University Hospital, Okayama, Japan
| | - Suguru Yokoo
- Department of Orthopaedic Surgery, Okayama University Hospital, Okayama, Japan
| | - Hideki Ohashi
- Department of Orthopaedic Surgery, National Hospital Organization Iwakuni Clinical Center, Iwakuni, Japan
| | - Masahiro Horita
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Takayuki Furumatsu
- Department of Orthopaedic Surgery, Okayama University Hospital, Okayama, Japan
| | - Toshifumi Ozaki
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Fukaya Y, Goto M, Ohashi H. Self-shielding effect of double heterogeneity for plutonium burner HTGR design. ANN NUCL ENERGY 2020. [DOI: 10.1016/j.anucene.2019.107182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Nakano Y, Onishi T, Niwa T, Takashima H, Shimoda M, Ohashi H, Ando H, Waseda K, Amano T. P3638Triglyceride deposite cardiomyovasculopathy latency in population with coronary artery disease. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Triglyceride deposit cardiomyovasculopathy (TGCV) is a novel clinical concept found among Japanese cardiac transplant recipients in 2008 that the abnormal intracellular triglyceride (TG) metabolism results in the ectopic accumulation of TG in vascular smooth muscle cells and cardiomyocytes, leading to diffuse narrowing coronary artery disease (CAD) and heart failure. TGCV is estimated to affect almost forty to fifty-thousand people in Japan, but there is no real-world date about the prevalence or latency.
Purpose
To evaluate TGCV latency in population with CAD, especially requiring urgent coronary angiography as Study 1, and chronic hemodialysis as Study 2.
Methods
This is multicenter retrospective estimation consisting of two studies.
Study 1) From 2012 to 2017, consecutive 400 patients of unstable angina or acute myocardial infarction who underwent urgent coronary angiography (CAG) and following iodine-123-β-methyliodophenyl-pentadecanoic acid (BMIPP) scintigraphy, a tracer for the diagnosis of TGCV, were enrolled.
Study 2) From 2011 to 2017, 88 chronic hemodialysis patients who underwent planed CAG and BMIPP scintigraphy for detection of ischemic heart disease were enrolled.
TGCV was diagnosed based on the latest diagnostic criteria for TGCV. The criteria include two major items (2 points each: BMIPP scintigraphy Wash-Out Rare <10%, Diffuse narrowing coronary arteries) and two minor items (1 point each: Jordans' anomaly in peripheral blood smear, Diabetes). Four points or more and three points indicated definite and probable TGCV, respectively. Only Items other than Jordans' anomaly were available for the diagnosis of TGCV because of retrospective nature. We evaluated the latent rate of definite and probable TGCV.
Results
Study 1) Figure (left) demonstrates the result of Study 1. Definitive TGCV patients were 14 patients, accounting for 3.5% of total 400 patients, and probable TGCV patients were 39 patients, accounting for 9.8% of all. Total 53 definitive and probable TGCV patients accounted for 13.3% of all. Annual average latency were 3.6±1.7% as definitive, 10.0±5.5% as probable and 13.6±6.6% as definitive and probable TGCV, respectively.
Study 2) Figure (right) demonstrates the result of Study 2. Definitive TGCV patients were 17 patients, accounting for 19.3% of total 88 hemodialysis patients, and probable TGCV patients were 22 patients, accounting for 25.0% of all. Total 39 definitive and probable TGCV patients accounted for 44.3% of all. Annual average latency of definitive TGCV was 19.3±13.4%. Of the 17 definitive TGCV patients, 9 patients were hemodialysis patients with diabetes.
Figure 1
Conclusions
TGCV might be latent with a probability of 3.6±1.7% per year in patients with unstable angina or acute myocardial infarction, and with a probability of 19.3±13.4% per year in chronic hemodialysis patients suspected of ischemic heart disease.
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Affiliation(s)
- Y Nakano
- Aichi Medical University, Nagakute, Japan
| | - T Onishi
- Narita Memorial Hospital, Cardiology, Toyohashi, Japan
| | - T Niwa
- Narita Memorial Hospital, Cardiology, Toyohashi, Japan
| | | | - M Shimoda
- Aichi Medical University, Nagakute, Japan
| | - H Ohashi
- Aichi Medical University, Nagakute, Japan
| | - H Ando
- Aichi Medical University, Nagakute, Japan
| | - K Waseda
- Aichi Medical University, Nagakute, Japan
| | - T Amano
- Aichi Medical University, Nagakute, Japan
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16
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Nakano Y, Suzuki M, Waseda K, Niwa T, Ando H, Sakurai S, Shimoda M, Ohashi H, Takashima H, Amano T. P2688A novel risk factor of stent restenosis after drug-eluting stent implantation; Involvement of triglyceride deposit cardiomyovasculopathy, coronary atherosclerosis with triglyceride deposition. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.1006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Triglyceride deposit cardiomyovasculopathy (TGCV) is a novel disease concept characterized by the excessive accumulation of triglyceride in cardiomyocytes and vascular smooth muscle cells, leading to coronary artery disease (CAD), heart failure, and arrhythmia. However, it is rarely known whether TGCV contributes to the increased risk of vascular failure after drug eluting stent (DES) implantation.
Purpose
The aim of this study was to evaluate vascular failure after 2nd generation DES implantation in patients with TGCV.
Methods
Among 637 consecutive patients suspected of having CAD who underwent both coronary angiography and iodine-123-β-methyliodophenyl-pentadecanoic acid (BMIPP) scintigraphy between 2010 and 2018, we analyzed the data from 92 patients who met the inclusion criteria (shown in Table and Figure). Ninety-two patients were allocated to the presence (TGCV group, 11 patients) or absence (control group, 81 patients) of TGCV. All of 92 patients were implanted 2nd generation DES and underwent planned follow up coronary angiography. Control patients were diagnosed of diabetes mellitus. Binary restenosis (ISR), defined as angiographic luminal diameter ≥50% by quantitative coronary angiography, target lesion revascularization (TLR), In-stent late loss and restenosis morphology were assessed in 23 stents of TGCV group and 120 stents of control group.
Results
There were no significant differences in baseline characteristics between the two groups except for the prevalence of hypertension. In-stent late loss was greater in TGCV than in control (0.45 (−0.04 to 3.33) vs. 0.15 (−0.18 to 2.75), p=0.ehz748.10067), resulting in greater incidence of ISR and TLR in TGCV than in control (34.8% vs. 10.0%, p=0.0017; 21.7% vs. 6.7%, p=0.021, respectively). On multivariable logistic regression analysis, TGCV was found to be a significant and independent predictor for ISR after 2nd generation DES implantation. Regarding restenosis morphology, diffuse and occlusive pattern of ISR, were more frequently observed in TGCV than control (87.5% and 33.3%, Fisher's exact test p=0.028).
Table 1.The 4th edition diagnostic criteria for TGCV Items Clinical findings 2 points I) BMIPP scintigraphy Wash-Out Rare <10% II) Diffuse narrowng coronary arteries 1 point III) Jordans anomaly in peripheral blood smear IV) Diabetes Decision 4 points or more → Definite TGCV
Figure 1
Conclusion
Patients with TGCV showed the greater incidence of vascular failure even after 2nd generation DES implantation, contributing to the novel risk factor for coronary intervention even in the 2nd DES era.
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Affiliation(s)
- Y Nakano
- Aichi Medical University, Nagakute, Japan
| | - M Suzuki
- Aichi Medical University, Nagakute, Japan
| | - K Waseda
- Aichi Medical University, Nagakute, Japan
| | - T Niwa
- Narita Memorial Hospital, Cardiology, Toyohashi, Japan
| | - H Ando
- Aichi Medical University, Nagakute, Japan
| | - S Sakurai
- Aichi Medical University, Nagakute, Japan
| | - M Shimoda
- Aichi Medical University, Nagakute, Japan
| | - H Ohashi
- Aichi Medical University, Nagakute, Japan
| | | | - T Amano
- Aichi Medical University, Nagakute, Japan
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Shimoda M, Ando H, Takashima H, Waseda K, Sakurai S, Suzuki A, Sawada H, Fujimoto M, Ohashi H, Amano T. P5628Resolution of incomplete stent apposition in the early phase after stent implantation: serial optical coherence tomography analyses at 2-week and 4-month. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0572] [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
Previous optical coherence tomography (OCT) study demonstrated that the incomplete stent apposition (ISA) distance <355 μm immediately after an index procedure was the corresponding cut-off point for predicting the resolution of ISA at 8–12 months follow-up in the second-generation DES. However, the natural course of acute ISA in the earlier phase remains unknown. The aim of the present study is to evaluate the natural course of acute ISA in the early phase after second-generation everolimus-eluting stent (EES) using serial OCT analyses at 2-week and 4-month.
Methods
From the population of the ACS-OCT trial, we identified a total of 45 patients who successfully underwent serial OCT examinations at post-stenting, 2-week follow-up, and 4-month follow-up. The presence of ISA was assessed in the OCT images, and ISA distance was measured within the stented segment. The target site for OCT analysis was the cross-section at the proximal edge of implanted stent. Serial OCT images at post-stenting, 2-week follow-up and 4-month follow-up were reviewed side by side on the screen, and maximum ISA distance and cross-sectional ISA area were measured.
Results
Incomplete stent apposition was observed in all EES at post-stenting, and it was persistent in 37.8% at 2-week follow-up and 11.1% at 4-month follow-up. Maximum ISA distance was significantly decreased over time (post-stenting, 144±150mm; 2-week follow-up, 88±146mm; 4-month follow-up, 34±111mm). Receiver-operating curve analysis identified that the best cut-off value of OCT-estimated ISA distance at post-stenting for predicting persistent ISA at 2-week follow-up and 4-month follow-up was >140μm and >215μm, respectively.
ROC curve analysis
Conclusion
ISA distance at post-stenting is an useful predictor for the resolution of ISA in the early phase after EES implantation.
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Affiliation(s)
- M Shimoda
- Aichi Medical University, Cardiology, Nagakute, Japan
| | - H Ando
- Aichi Medical University, Cardiology, Nagakute, Japan
| | - H Takashima
- Aichi Medical University, Cardiology, Nagakute, Japan
| | - K Waseda
- Aichi Medical University, Cardiology, Nagakute, Japan
| | - S Sakurai
- Aichi Medical University, Cardiology, Nagakute, Japan
| | - A Suzuki
- Aichi Medical University, Cardiology, Nagakute, Japan
| | - H Sawada
- Aichi Medical University, Cardiology, Nagakute, Japan
| | - M Fujimoto
- Aichi Medical University, Cardiology, Nagakute, Japan
| | - H Ohashi
- Aichi Medical University, Cardiology, Nagakute, Japan
| | - T Amano
- Aichi Medical University, Cardiology, Nagakute, Japan
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18
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Takashima H, Suzuki A, Sakurai S, Ando H, Nakano Y, Watanabe A, Mukai K, Wakabayashi H, Kojima H, Sawada H, Saka Y, Fujimoto M, Tanabe S, Ohashi H, Amano T. P5633Diagnostic impact of resting full-cycle ratio as newly developed non-hyperemic indices for physiological lesion assessment. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Although fractional flow reserve (FFR) is a gold standard method to evaluate functional lesion severity in the catheterization laboratory, the need of hyperemic condition limits the widespread adoption of FFR. Recently, the resting full-cycle ratio (RFR) which was newly developed resting indices was launched. It is unclear whether RFR as resting condition could assess physiological lesion severity of coronary artery stenosis. The aim of this study was to evaluate the diagnostic impact of RFR compared to FFR in entire range of coronary artery stenosis.
Method
A total of 53 patients with 70 lesions were enrolled in this study. The RFR was measured after adequately waiting for stable condition, while FFR was measured after intravenous administration of ATP (180mcg/kg/min). Lesions with FFR ≤0.80 were considered functionally significant coronary artery stenosis.
Results
In all lesions, reference diameter, diameter stenosis, lesion length, RFR, and FFR were 3.3±0.8mm, 44±12%, 14.6±7.2mm, 0.90±0.11, and 0.83±0.11, respectively. Functional significance was observed in 24 lesions (34%) of all lesions. The RFR showed a significant correlation with FFR (y = 0.800x + 0.239, R = 0.817, p<0.001). The Bland-Altman plot demonstrated a good agreement with a mean difference of 0.07 and a standard deviation of 0.06 between RFR and FFR across entire range of coronary artery stenosis. ROC curve analysis showed an excellent accuracy of RFR cut-off of ≤0.90 in predicting FFR ≤0.80 which had 78% sensitivity and 87% specificity (AUC 0.87, diagnostic accuracy 84%).
Conclusion
The RFR as newly resting indices is reliable to the assessment of functional lesion severity. This physiology-based approach may be a possible alternative method for FFR measurements in daily practice.
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Affiliation(s)
| | - A Suzuki
- Aichi Medical University, Nagakute, Japan
| | - S Sakurai
- Aichi Medical University, Nagakute, Japan
| | - H Ando
- Aichi Medical University, Nagakute, Japan
| | - Y Nakano
- Aichi Medical University, Nagakute, Japan
| | - A Watanabe
- Aichi Medical University, Nagakute, Japan
| | - K Mukai
- Aichi Medical University, Nagakute, Japan
| | | | - H Kojima
- Aichi Medical University, Nagakute, Japan
| | - H Sawada
- Aichi Medical University, Nagakute, Japan
| | - Y Saka
- Aichi Medical University, Nagakute, Japan
| | - M Fujimoto
- Aichi Medical University, Nagakute, Japan
| | - S Tanabe
- Aichi Medical University, Nagakute, Japan
| | - H Ohashi
- Aichi Medical University, Nagakute, Japan
| | - T Amano
- Aichi Medical University, Nagakute, Japan
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Yamano N, Kunisada M, Kaizu S, Sugihara K, Nishiaki-Sawada A, Ohashi H, Yoshioka A, Igarashi T, Tanito M, Nishigori C. 730 Long-term effect of 222-nm ultraviolet lamp on mice highly susceptible to developing ultraviolet-induced skin tumors. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.806] [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: 11/26/2022]
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Minatoguchi S, Yoshizane T, Tanaka R, Watanabe T, Ono K, Saeki M, Nagaya M, Yagasaki H, Kojima T, Iwama M, Noda T, Ohashi H, Watanabe S, Minatoguchi S, Kawasaki M. P860Left ventricular layer torsion in heart failure with preserved versus reduced ejection fraction assessed by one-beat real-time 3-dimensional speckle tracking echocardiography with high volume rate. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- S Minatoguchi
- Gifu University Graduate School of Medicine, Department of Cardiology, Gifu, Japan
| | - T Yoshizane
- Gifu Prefectural General Medical Center, Department of Cardiology, Gifu, Japan
| | - R Tanaka
- Murakami Memorial Hospital, Department of Cardiology, Gifu, Japan
| | - T Watanabe
- Gifu University Graduate School of Medicine, Department of Cardiology, Gifu, Japan
| | - K Ono
- Gifu Prefectural General Medical Center, Department of Cardiology, Gifu, Japan
| | - M Saeki
- Gifu Prefectural General Medical Center, Department of Cardiology, Gifu, Japan
| | - M Nagaya
- Gifu Prefectural General Medical Center, Department of Cardiology, Gifu, Japan
| | - H Yagasaki
- Gifu Prefectural General Medical Center, Department of Cardiology, Gifu, Japan
| | - T Kojima
- Gifu Prefectural General Medical Center, Department of Cardiology, Gifu, Japan
| | - M Iwama
- Gifu Prefectural General Medical Center, Department of Cardiology, Gifu, Japan
| | - T Noda
- Gifu Prefectural General Medical Center, Department of Cardiology, Gifu, Japan
| | - H Ohashi
- Murakami Memorial Hospital, Department of Cardiology, Gifu, Japan
| | - S Watanabe
- Gifu Prefectural General Medical Center, Department of Cardiology, Gifu, Japan
| | - S Minatoguchi
- Gifu University Graduate School of Medicine, Department of Cardiology, Gifu, Japan
| | - M Kawasaki
- Gifu University Graduate School of Medicine, Department of Cardiology, Gifu, Japan
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Yamamoto S, Omi T, Akai H, Kubota Y, Takahashi Y, Suzuki Y, Hirata Y, Yamamoto K, Yukawa R, Horiba K, Yumoto H, Koyama T, Ohashi H, Owada S, Tono K, Yabashi M, Shigemasa E, Yamamoto S, Kotsugi M, Wadati H, Kumigashira H, Arima T, Shin S, Matsuda I. Element Selectivity in Second-Harmonic Generation of GaFeO_{3} by a Soft-X-Ray Free-Electron Laser. Phys Rev Lett 2018; 120:223902. [PMID: 29906133 DOI: 10.1103/physrevlett.120.223902] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Indexed: 05/27/2023]
Abstract
Nonlinear optical frequency conversion has been challenged to move down to the extreme ultraviolet and x-ray region. However, the extremely low signals have allowed researchers to only perform transmission experiments of the gas phase or ultrathin films. Here, we report second harmonic generation (SHG) of the reflected beam of a soft x-ray free-electron laser from a solid, which is enhanced by the resonant effect. The observation revealed that the double resonance condition can be met by absorption edges for transition metal oxides in the soft x-ray range, and this suggests that the resonant SHG technique can be applicable to a wide range of materials. We discuss the possibility of element-selective SHG spectroscopy measurements in the soft x-ray range.
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Affiliation(s)
- Sh Yamamoto
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - T Omi
- Department of Advanced Materials Science, The University of Tokyo, Kashiwa 277-8561, Japan
| | - H Akai
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Y Kubota
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Y Takahashi
- Tokyo University of Science, Katsushika 125-8585, Japan
| | - Y Suzuki
- Tokyo University of Science, Katsushika 125-8585, Japan
| | - Y Hirata
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - K Yamamoto
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - R Yukawa
- Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba 305-0801, Japan
| | - K Horiba
- Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba 305-0801, Japan
| | - H Yumoto
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - T Koyama
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - H Ohashi
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - S Owada
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - K Tono
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - M Yabashi
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - E Shigemasa
- UVSOR Facility, Institute for Molecular Science, Okazaki 444-8585, Japan
- Sokendai (the Graduate University for Advanced Studies), Okazaki 444- 8585, Japan
| | - S Yamamoto
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - M Kotsugi
- Tokyo University of Science, Katsushika 125-8585, Japan
| | - H Wadati
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - H Kumigashira
- Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba 305-0801, Japan
| | - T Arima
- Department of Advanced Materials Science, The University of Tokyo, Kashiwa 277-8561, Japan
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - S Shin
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - I Matsuda
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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Horita M, Nishida K, Hashizume K, Nasu Y, Saiga K, Nakahara R, Machida T, Ohashi H, Ozaki T. Outcomes of Resection and Joint-Preserving Arthroplasty for Forefoot Deformities for Rheumatoid Arthritis. Foot Ankle Int 2018; 39:292-299. [PMID: 29415557 DOI: 10.1177/1071100717743996] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND We investigated the clinical outcomes of resection and joint-preserving arthroplasty for forefoot deformities in patients with rheumatoid arthritis. METHODS Sixteen feet of 14 women (average age, 67.1 years; range, 53-82) underwent resection arthroplasty of the metatarsal head (resection group), and 18 feet of 15 women (average age, 61.3 years; range, 40-73) underwent a metatarsophalangeal joint-preserving procedure with shortening oblique metatarsal osteotomies of the lesser toes (joint preservation group). The mean disease duration in the resection and joint preservation groups was 23.6 and 19.1 years, and the average follow-up period was 37.3 and 33.5 months, respectively. The classification of Larsen was used to assess the severity of destruction of the metatarsophalangeal (MTP) joint. Preoperative and postoperative clinical evaluation included Japanese Society for Surgery of the Foot (JSSF) score and postoperative complications. RESULTS The number of preoperative radiographic destruction of the MTP joints (Larsen grade II, III, IV, and V) was 0, 29, 39, and 12 joints in the resection group and 13, 67, 9, and 1 joints in the joint preservation group. The mean JSSF score improved significantly from 61.3 to 83.9 points in the resection group ( P < .001) and from 62.2 to 90.8 points in the joint preservation group ( P < .001). In the resection group, recurrence of callosities and claw toe deformity was observed in 6 and 3 feet, respectively. In the joint-preserving group, recurrence of callosities and hammer toe deformity was observed in 1 foot each. CONCLUSION The resection arthroplasty and joint-preserving procedure showed satisfactory clinical outcomes. However, whether both procedures can maintain the good clinical results without the recurrence of forefoot deformity will require longer follow-up. LEVEL OF EVIDENCE Level III, retrospective comparative series.
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Affiliation(s)
- Masahiro Horita
- 1 Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Keiichiro Nishida
- 1 Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kenzo Hashizume
- 2 Department of Rehabilitation, Okayama Rosai Hospital, Okayama, Japan
| | - Yoshihisa Nasu
- 3 Department of Medical Materials for Musculoskeletal Reconstruction, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kenta Saiga
- 1 Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Ryuichi Nakahara
- 4 Department of Musculoskeletal Traumatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Takahiro Machida
- 1 Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hideki Ohashi
- 1 Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Toshifumi Ozaki
- 1 Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Uchida K, Ohashi H, Hiroko N, Mimoto R. Abstract P3-10-18: Factors associated with mammographic density in Japanese women. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p3-10-18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Increased mammographic breast density decreases the sensitivity and the specificity of mammography screening and is associated with a significant risk factor for breast cancer. No studies were identified that examined the impact of supplemental screening on breast cancer recurrence rates or mortality for women with dense breasts. The aim of this study is to examine factors associating with breast density in Japanese women.
Data sources and methods: We used mammography check-up participants (n=5159, women aged 40 years or older) between Apr 2014 and Mar 2017 as our baseline data. Using a self-administered questionnaire, data of life style were collected. Logistic regression was used to estimate the odds of having dense breasts by age, body mass index (BMI), alcohol consumption, smoking, parity, menopausal status, dysmenorrhea, hormone replacement therapy (HRT), family history of breast cancer, physical exercise, fried foods intake, brightly colored vegetables intake, coffee intake, tea intake and bone mineral density. Breast densities were divided into four categories based on BI-RADS classification. BI-RADS 3 and 4 were defined as dense breast. All statistical tests were two-sided.
Results: Dense breast accounted for 62.3% of mammography screening participants. Dense breast at an early age was more frequent as 78.0% in the 40's. Alcohol intake (20 g or more a day, OR=1.62, 0.026) in post-menopausal women showed statistically significant positive interaction with dense breast. Weak positive interaction was seen in bone mineral density>80% (OR=0.63, 0.086, n=775). On the other, age (OR=0.97, <0.001), BMI (OR=0.78, <0.001), number of live birth (one; OR=0.77, <0.030, two or more; OR=0.37, <0.001) and post-menopause (OR=0.60, <0.001) showed statistically significant negative interactions with dense breast.
Conclusion: Dense breast accounted for 62.3% of all participants. Dense breast was more frequent at early age as 78.0% in their 40's. Alcohol consumption and bone mineral density in post-menopausal women were positive interaction with mammographic breast density. On the contrary, age, BMI, number of live birth and post-menopause were negative interaction with mammographic breast density.
Citation Format: Uchida K, Ohashi H, Hiroko N, Mimoto R. Factors associated with mammographic density in Japanese women [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P3-10-18.
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Affiliation(s)
- K Uchida
- Shinjuku Medical Center, Shinjuku-ku, Tokyo, Japan; The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - H Ohashi
- Shinjuku Medical Center, Shinjuku-ku, Tokyo, Japan; The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - N Hiroko
- Shinjuku Medical Center, Shinjuku-ku, Tokyo, Japan; The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - R Mimoto
- Shinjuku Medical Center, Shinjuku-ku, Tokyo, Japan; The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
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Affiliation(s)
- T. Kawano
- National Institute for Fusion Science, Oroshi-cho 322-6, Toki-city, Gifu, 509-5292 Japan
| | - T. Uda
- National Institute for Fusion Science, Oroshi-cho 322-6, Toki-city, Gifu, 509-5292 Japan
| | - T. Yamamoto
- ATOX Co.,Ltd., 2-3-4 Shintomi, Chuo-ku, Tokyo, 104-0041 JAPAN
| | - H. Ohashi
- ATOX Co.,Ltd., 2-3-4 Shintomi, Chuo-ku, Tokyo, 104-0041 JAPAN
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Nishida K, Machida T, Horita M, Hashizume K, Nakahara R, Nasu Y, Ohashi H, Saiga K, Ozaki T. Shortening Oblique Osteotomy with Screw Fixation for Correction of the Lesser Metatarsophalangeal Joints of Rheumatoid Forefoot. Acta Med Okayama 2017; 70:477-483. [PMID: 28003673 DOI: 10.18926/amo/54811] [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] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The metatarsophalangeal (MTP) joints are often and predominantly affected in rheumatoid arthritis. The aim of the current study was to describe surgical techniques of shortening oblique osteotomy for lesser metatarsal bone with screw fixation at the osteotomy site, and to investigate the short-term clinical outcomes of our procedure. Twenty-seven feet (78 toes) of 24 RA patients underwent the shortening oblique osteotomy for the correction of deformity at the lesser MTP joints. The average Japanese Society of Surgery of the Foot (JSSF) standard rating system for the RA foot and ankle scale improved significantly from 59.6 points preoperatively to 88.3 points postoperatively (p<0.001). Twenty-four feet (89% ) were free from metatarsalgia and symptomatic callosities at the lesser MTP joint after surgery. Our present findings showed satisfactory early clinical outcomes of the shortening oblique osteotomy of the metatarsal bone with screw fixation for RA forefoot.
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Affiliation(s)
- Keiichiro Nishida
- Department of Human Morphology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558,
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26
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Uchida K, Ohashi H, Kitano N, Tsunoda K, Nagamatsu T, Sekine C, Imawari Y, Nogi H, Takeyama H. Abstract P2-07-16: Alcohol consumption increases mammographic density in women aged ≥55 years. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p2-07-16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Incresed mammographic density is a significant risk factor for breast cancer and decreses the sensitivity of mammography screening. The aim of this study is to examine the factors affecting breast density in Japanese women.
Data sources and methods: Between Apr. 2014 and Mar. 2016, 3492 women were received mammography screening. According to the results of mammography, breast density was categorized as non-dense(BI-RADS 1 and 2, n=1670) and dense(BI-RADS 3 and 4, n=2222) . Logistic regression was used to estimate the odds of having dense breasts by age, body mass index(BMI), alcohol consumption, smoking, parity, menopausal status, dysmenorrhea, hormone use, family history of breast cancer, physical activity, fried foods intake, brightly colored vegetables intake, coffee intake and tea or green tea intake. All statistical tests were two-sided.
Results: There was a statistically significant negative interaction of age(OR=0.97, <0.001), BMI(OR=0.78, <0.001), number of live birth (one; OR=0.77, <0.030, two or more; OR0.37, <0.001), post-menopause(OR=0.6, <0.001) on breast density. On the other, there was a statistically significant positive interaction of alcohol intake(20g or more a day, OR=1.62, 0.026) in dense breast women aged ≥55 years. A trend of bone mineral density ≥80% and dense breast was seen in women aged ≥40 years(OR=0.63, <0.086, n=510).
Results of analysis of factors influencing breast density among all study participants Odds ratio95% CIPAgeContinuoous variables0.970.95-0.98<0.001BMIContinuoous variables0.780.76-0.80<0.001Alcohol intakenone1.00 0.325 <20g a day1.120.94-1.350.209 ≥20g a day1.210.91-1.600.186Smokingno1.00 yes0.940.71-1.230.644Birth01.00 <0.001 once0.770.61-0.970.030 ≥20.370.31-0.45<0.001Menopausepre1.00 post0.600.47-0.77<0.001Dysminorrheano1.00 yes0.780.41-1.480.446Family history of breast cancerno1.00 yes1.000.81-1.240.991Physical activityno1.00 yes0.890.74-1.070.207Fried foods intakenone1.00 0.087 once two days0.780.60-1.020.068 ≥once a day0.760.51-1.120.166Brightly coloredd vegetablesnone1.00 0.910 once two days0.950.70-1.280.737 ≥once a day0.950.73-1.220.666Coffee intakenone1.00 0.105 once two days1.060.75-1.510.729 ≥once a day1.221.01-1.470.040Tea/Green tea intakenone1.001.01-1.470.098 once two days0.760.55-1.050.097 ≥once a day0.840.70-1.000.055bone mineral density(n=510)<80%1.00 ≥80%0.630.38-1.070.068
Results of analysis of factors influencing breast density in women aged ≥55 years (n=1382) Odds ratio95% CIPBMI<25kg/m21.00 ≥25kg/m20.300.21-0.44<0.001Birth0 Trend P<0.001 once0.690.46-1.040.0076 ≥two0.310.23-0.41<0.001Alcohol intakenone 0.052 <20g/day1.260.98-1.620.074 ≥20g/day1.621.06-2.480.026
Conclusion: Alcohol consumption increase mammographic breast density in women aged ≥55 years. As both of increased breast density and alcohol consumption have been suggested to increase risk of breast cancer, more cautious mammographic screening should be considered for those women aged ≥55 years.
Citation Format: Uchida K, Ohashi H, Kitano N, Tsunoda K, Nagamatsu T, Sekine C, Imawari Y, Nogi H, Takeyama H. Alcohol consumption increases mammographic density in women aged ≥55 years [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P2-07-16.
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Affiliation(s)
- K Uchida
- Meiji Yasuda Life Foundation of Health and Welfare, Shinjuku-ku, Tokyo, Japan; The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - H Ohashi
- Meiji Yasuda Life Foundation of Health and Welfare, Shinjuku-ku, Tokyo, Japan; The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - N Kitano
- Meiji Yasuda Life Foundation of Health and Welfare, Shinjuku-ku, Tokyo, Japan; The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - K Tsunoda
- Meiji Yasuda Life Foundation of Health and Welfare, Shinjuku-ku, Tokyo, Japan; The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - T Nagamatsu
- Meiji Yasuda Life Foundation of Health and Welfare, Shinjuku-ku, Tokyo, Japan; The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - C Sekine
- Meiji Yasuda Life Foundation of Health and Welfare, Shinjuku-ku, Tokyo, Japan; The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - Y Imawari
- Meiji Yasuda Life Foundation of Health and Welfare, Shinjuku-ku, Tokyo, Japan; The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - H Nogi
- Meiji Yasuda Life Foundation of Health and Welfare, Shinjuku-ku, Tokyo, Japan; The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - H Takeyama
- Meiji Yasuda Life Foundation of Health and Welfare, Shinjuku-ku, Tokyo, Japan; The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
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Yokohata E, Kuwatsuka Y, Ohashi H, Terakura S, Kawashima N, Seto A, Kurahashi S, Ozawa Y, Goto T, Imahashi N, Nishida T, Miyao K, Sakemura R, Kato T, Sawa M, Kohno A, Sao H, Iida H, Kiyoi H, Naoe T, Miyamura K, Murata M. Impact of T-cell chimerism on relapse after cord blood transplantation for hematological malignancies: Nagoya Blood and Marrow Transplantation Group study. Bone Marrow Transplant 2017; 52:612-614. [PMID: 28067879 DOI: 10.1038/bmt.2016.323] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- E Yokohata
- Department of Hematology, Japanese Red Cross Nagoya Daiichi Hospital, Nagoya, Japan
| | - Y Kuwatsuka
- Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, Nagoya, Japan
| | - H Ohashi
- Department of Hematology, National Hospital Organization Nagoya Medical Center, Nagoya, Japan.,Division of Hematology, Toyota Memorial Hospital, Toyota, Japan
| | - S Terakura
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - N Kawashima
- Department of Hematology, Japanese Red Cross Nagoya Daiichi Hospital, Nagoya, Japan
| | - A Seto
- Department of Hematology, Japanese Red Cross Nagoya Daiichi Hospital, Nagoya, Japan.,Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - S Kurahashi
- Department of Hematology, Japanese Red Cross Nagoya Daiichi Hospital, Nagoya, Japan
| | - Y Ozawa
- Department of Hematology, Japanese Red Cross Nagoya Daiichi Hospital, Nagoya, Japan
| | - T Goto
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - N Imahashi
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Nishida
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - K Miyao
- Department of Hematology and Oncology, Anjo Kosei Hospital, Anjo, Japan
| | - R Sakemura
- Department of Hematology and Oncology, Anjo Kosei Hospital, Anjo, Japan
| | - T Kato
- Department of Hematology and Oncology, Anjo Kosei Hospital, Anjo, Japan
| | - M Sawa
- Department of Hematology and Oncology, Anjo Kosei Hospital, Anjo, Japan
| | - A Kohno
- Department of Hematology and Oncology, JA Aichi Konan Kosei Hospital, Konan, Japan
| | - H Sao
- Department of Hematology, Meitetsu Hospital, Nagoya, Japan
| | - H Iida
- Department of Hematology, National Hospital Organization Nagoya Medical Center, Nagoya, Japan
| | - H Kiyoi
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Naoe
- Department of Hematology, National Hospital Organization Nagoya Medical Center, Nagoya, Japan.,Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - K Miyamura
- Department of Hematology, Japanese Red Cross Nagoya Daiichi Hospital, Nagoya, Japan
| | - M Murata
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Sekizawa O, Uruga T, Takagi Y, Nitta K, Kato K, Tanida H, Uesugi K, Hoshino M, Ikenaga E, Takeshita K, Takahashi S, Sano M, Aoyagi H, Watanabe A, Nariyama N, Ohashi H, Yumoto H, Koyama T, Senba Y, Takeuchi T, Furukawa Y, Ohata T, Matsushita T, Ishizawa Y, Kudo T, Kimura H, Yamazaki H, Tanaka T, Bizen T, Seike T, Goto S, Ohno H, Takata M, Kitamura H, Ishikawa T, Tada M, Yokoyama T, Iwasawa Y. SPring-8 BL36XU: Catalytic Reaction Dynamics for Fuel Cells. ACTA ACUST UNITED AC 2016. [DOI: 10.1088/1742-6596/712/1/012142] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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29
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Kaneda D, Ohashi H, Takeshita A, Horita M, Machida T, Nakahara R, Nasu Y, Hashizume K, Nishida K, Ozaki T. AB0177 Patient-Reported Outcome of Upper Extremity Surgery for Rheumatoid Arthritis. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.4512] [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: 11/03/2022]
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30
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Matsuyama K, Ohashi H, Miyanishi S, Ushiyama H, Yamaguchi T. Quantum chemical approach for highly durable anion exchange groups in solid-state alkaline fuel cells. RSC Adv 2016. [DOI: 10.1039/c5ra27939a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The durability of anion exchange groups against OH− ion that decomposed fast.
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Affiliation(s)
- K. Matsuyama
- Chemical Resources Laboratory
- Tokyo Institute of Technology
- Yokohama
- Japan
| | - H. Ohashi
- Chemical Resources Laboratory
- Tokyo Institute of Technology
- Yokohama
- Japan
| | - S. Miyanishi
- Chemical Resources Laboratory
- Tokyo Institute of Technology
- Yokohama
- Japan
| | - H. Ushiyama
- Department of Chemical System Engineering
- The University of Tokyo
- Tokyo 113-8656
- Japan
| | - T. Yamaguchi
- Chemical Resources Laboratory
- Tokyo Institute of Technology
- Yokohama
- Japan
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Taguchi M, Chainani A, Ueda S, Matsunami M, Ishida Y, Eguchi R, Tsuda S, Takata Y, Yabashi M, Tamasaku K, Nishino Y, Ishikawa T, Daimon H, Todo S, Tanaka H, Oura M, Senba Y, Ohashi H, Shin S. Temperature Dependence of Magnetically Active Charge Excitations in Magnetite across the Verwey Transition. Phys Rev Lett 2015; 115:256405. [PMID: 26722935 DOI: 10.1103/physrevlett.115.256405] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Indexed: 05/12/2023]
Abstract
We study the electronic structure of bulk single crystals and epitaxial films of Fe_{3}O_{4}. Fe 2p core level spectra show clear differences between hard x-ray (HAX) and soft x-ray photoemission spectroscopy (PES). The bulk-sensitive spectra exhibit temperature (T) dependence across the Verwey transition, which is missing in the surface-sensitive spectra. By using an extended impurity Anderson full-multiplet model-and in contrast to an earlier peak assignment-we show that the two distinct Fe species (A and B site) and the charge modulation at the B site are responsible for the newly found double peaks in the main peak above T_{V} and its T-dependent evolution. The Fe 2p HAXPES spectra show a clear magnetic circular dichroism (MCD) in the metallic phase of magnetized 100-nm-thick films. The model calculations also reproduce the MCD and identify the contributions from magnetically distinct A and B sites. Valence band HAXPES shows a finite density of states at E_{F} for the polaronic half metal with a remnant order above T_{V} and a clear gap formation below T_{V}. The results indicate that the Verwey transition is driven by changes in the strongly correlated and magnetically active B-site electronic states, consistent with resistivity and optical spectra.
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Affiliation(s)
- M Taguchi
- Material Science, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0192, Japan
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - A Chainani
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - S Ueda
- National Institute for Materials Science (NIMS), SPring-8, Sayo, Hyogo 679-5148, Japan
| | - M Matsunami
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Y Ishida
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - R Eguchi
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - S Tsuda
- National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0003, Japan
| | - Y Takata
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - M Yabashi
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - K Tamasaku
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - Y Nishino
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - T Ishikawa
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - H Daimon
- Material Science, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0192, Japan
| | - S Todo
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - H Tanaka
- ISIR-Sanken, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - M Oura
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - Y Senba
- JASRI/SPring-8, Sayo, Sayo, Hyogo 679-5198, Japan
| | - H Ohashi
- JASRI/SPring-8, Sayo, Sayo, Hyogo 679-5198, Japan
| | - S Shin
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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Horiuchi T, Ohashi H, Horiuchi J. The effects of social defeat stress on neuronal activation in hypothalamus and the cardiovascular reaction in rats. Auton Neurosci 2015. [DOI: 10.1016/j.autneu.2015.07.331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Numata S, Tsutsumi Y, Monta O, Yamazaki S, Seo H, Yoshida S, Samura T, Ohashi H. Acute type A aortic dissection repair with mild-to-moderate hypothermic circulatory arrest and selective cerebral perfusion. J Cardiovasc Surg (Torino) 2015; 56:525-530. [PMID: 25723762] [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] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
AIM The purpose of this study was to evaluate surgical results of aortic repair with antegrade selective cerebral perfusion (ASCP) and mild-to-moderate hypothermia (MH) from 28 to 31°C comparing with previous series with hypothermia from 20°C to 27 °C. METHODS Between 2000 and 2011, 109 consecutive patients underwent surgical repair for acute type A aortic dissection with circulatory arrest and ASCP and MH in our institution. Mean patient age was 67±11 years old. Total arch replacement was performed in 85 patients (78%). Thirty (27%) patients had shock status preoperatively. The patients were divided into two different subsets, which is group A (circulatory arrest at less than 27.9 °C, N.=70), and group B (at more than 28 °C, N.=39). RESULTS The mean extra-corporeal circulation time was 185±47 minutes in group A and 155±38 minutes in group B (P<0.001). The hospital mortality was 11.4% in group A and 10.3% in group B (P>0.05). Permanent neurological deficit occurred in 10 patients (14.3%) in group A, and in 5 (12.8%) in group B (P>0.05). Two (2.8%) paraplegia occurred in group A, and none in group B (P>0.05). The incidence of renal failure requiring hemodialysis was 17.1% in group A and 7.7% in group B, (P>0.05). Respiratory failure after surgery occurred in 27.1% of patients in group A, and 5.1% in group B (P=0.005). CONCLUSION Circulatory arrest at more than 28 °C offered sufficient cerebral and distal organ protection for acute type A aortic dissection.
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Affiliation(s)
- S Numata
- Department of Cardiovascular Surgery, Fukui Cardiovascular Center, Fukui, Japan -
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Kawano T, Ohashi H, Hamada Y, Jamsranjav E. Comparative Testing of Various Flow-Cell Detectors Fabricated using CaF 2Solid Scintillator. Fusion Science and Technology 2015. [DOI: 10.13182/fst14-t39] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Kawano
- National Institute for Fusion Science, Oroshi-cho 322-6, Toki-city, Gifu 509-5292, Japan
| | - H. Ohashi
- ATOXCo., Ltd., 2-3-4 Shintomi, Chuo-ku, Tokyo 104-0041, JAPAN
| | - Y. Hamada
- ATOXCo., Ltd., 2-3-4 Shintomi, Chuo-ku, Tokyo 104-0041, JAPAN
| | - E. Jamsranjav
- ATOXCo., Ltd., 2-3-4 Shintomi, Chuo-ku, Tokyo 104-0041, JAPAN
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Kobayashi M, Niwa H, Takeda Y, Fujimori A, Senba Y, Ohashi H, Tanaka A, Ohya S, Hai PN, Tanaka M, Harada Y, Oshima M. Electronic excitations of a magnetic impurity state in the diluted magnetic semiconductor (Ga,Mn)As. Phys Rev Lett 2014; 112:107203. [PMID: 24679325 DOI: 10.1103/physrevlett.112.107203] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Indexed: 06/03/2023]
Abstract
The electronic structure of doped Mn in (Ga,Mn)As is studied by resonant inelastic x-ray scattering. From configuration-interaction cluster-model calculations, the line shapes of the Mn L3 resonant inelastic x-ray scattering spectra can be explained by d-d excitations from the Mn ground state dominated by charge-transferred states, in which hole carriers are bound to the Mn impurities, rather than a pure acceptor Mn2+ ground state. Unlike archetypical d-d excitation, the peak widths are broader than the experimental energy resolution. We attribute the broadening to a finite lifetime of the d-d excitations, which decay rapidly to electron-hole pairs in the host valence and conduction bands through the hybridization of the Mn 3d orbital with the ligand band.
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Affiliation(s)
- M Kobayashi
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan and Synchrotron Radiation Research Organization, The University of Tokyo, 1-490-2 Kouto, Sayo-cho, Tatsuno, Hyogo 679-5165, Japan
| | - H Niwa
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan and Synchrotron Radiation Research Organization, The University of Tokyo, 1-490-2 Kouto, Sayo-cho, Tatsuno, Hyogo 679-5165, Japan and Institute for Solid State Physics, The University of Tokyo, 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan
| | - Y Takeda
- Quantum Beam Science Directorate, Japan Atomic Energy Agency, Sayo-gun, Hyogo 679-5148, Japan
| | - A Fujimori
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Y Senba
- Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo 679-5198, Japan
| | - H Ohashi
- Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo 679-5198, Japan
| | - A Tanaka
- Department of Quantum Matter, ADSM, Hiroshima University, Higashi-Hiroshima 739-8530, Japan
| | - S Ohya
- Department of Electronic Engineering and Information Systems, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - P N Hai
- Department of Electronic Engineering and Information Systems, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - M Tanaka
- Department of Electronic Engineering and Information Systems, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Y Harada
- Synchrotron Radiation Research Organization, The University of Tokyo, 1-490-2 Kouto, Sayo-cho, Tatsuno, Hyogo 679-5165, Japan and Institute for Solid State Physics, The University of Tokyo, 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan
| | - M Oshima
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan and Synchrotron Radiation Research Organization, The University of Tokyo, 1-490-2 Kouto, Sayo-cho, Tatsuno, Hyogo 679-5165, Japan
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Ota Y, Ohashi H, Otani C, Dei Y, Kondo S, Baba S. Cytomegalovirus-induced small intestinal bleeding complicated with cutaneous vasculitis: a case report. Mod Rheumatol 2014; 12:259-62. [PMID: 24387070 DOI: 10.3109/s101650200047] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract A 17-year-old woman who was being treated with prednisolone for cutaneous vasculitis developed recurrent massive melena and abdominal pain. An emergency resection was performed because of uncontrollable melena, revealing many small intestinal ulcers with cytomegalic inclusion bodies, which were found by immunopathological staining. However, the cytomegalovirus (CMV) antigenemia (CMV-Ag) assay and the IgM antibody titer for CMV were negative on admission. This case indicates that a high state of alertness for CMV infection in immunocompromised patients with gastrointestinal bleeding is required even if the CMV-Ag assay and IgM antibody are both negative.
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Affiliation(s)
- Y Ota
- Department of Internal Medicine III, Hamamatsu University School of Medicine , Handayama 1-20-1, Hamamatsu 431-3124 , Japan
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Tanida H, Fukuda K, Murayama H, Orikasa Y, Arai H, Uchimoto Y, Matsubara E, Uruga T, Takeshita K, Takahashi S, Sano M, Aoyagi H, Watanabe A, Nariyama N, Ohashi H, Yumoto H, Koyama T, Senba Y, Takeuchi T, Furukawa Y, Ohata T, Matsushita T, Ishizawa Y, Kudo T, Kimura H, Yamazaki H, Tanaka T, Bizen T, Seike T, Goto S, Ohno H, Takata M, Kitamura H, Ishikawa T, Ohta T, Ogumi Z. RISING beamline (BL28XU) for rechargeable battery analysis. J Synchrotron Radiat 2014; 21:268-72. [PMID: 24365948 PMCID: PMC3874024 DOI: 10.1107/s1600577513025733] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Accepted: 09/17/2013] [Indexed: 06/03/2023]
Abstract
The newly installed BL28XU beamline at SPring-8 is dedicated to in situ structural and electronic analysis of rechargeable batteries. It supports the time range (1 ms to 100 s) and spatial range (1 µm to 1 mm) needed for battery analysis. Electrochemical apparatus for battery charging and discharging are available in experimental hutches and in a preparation room. Battery analysis can be carried out efficiently and effectively using X-ray diffraction, X-ray absorption fine-structure analysis and hard X-ray photoelectron spectroscopy. Here, the design and performance of the beamline are described, and preliminary results are presented.
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Affiliation(s)
| | | | | | | | | | | | | | | | - K. Takeshita
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | - S. Takahashi
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | | | | | | | - N. Nariyama
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | - H. Ohashi
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | | | | | | | | | - Y. Furukawa
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | - T. Ohata
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | | | | | - T. Kudo
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | - H. Kimura
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | | | - T. Tanaka
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | - T. Bizen
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | - T. Seike
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | - S. Goto
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | | | - M. Takata
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | - H. Kitamura
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | - T. Ishikawa
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | - T. Ohta
- Ritsumeikan University, Japan
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Sugiyama K, Kojima Y, Moritani S, Nakamura H, Yamamoto H, Miyata Y, Iida H, Ohashi H, Nagai H. Effectiveness of DA-EPOCH-R Therapy in Patient with Double Hit Lymphoma and Chronic Kidney Disease on Hemodialysis. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt460.112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Yamazaki S, Tsutsumi Y, Monta O, Numata S, Seo H, Yoshida S, Samura T, Ohashi H. 277 * SEVENTEEN-YEAR EXPERIENCE OF TRICUSPID RING ANNULOPLASTY: DURABILITY AND RISK FACTORS FOR FAILURE. Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivt372.277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Tsurusaki Y, Okamoto N, Ohashi H, Mizuno S, Matsumoto N, Makita Y, Fukuda M, Isidor B, Perrier J, Aggarwal S, Dalal AB, Al-Kindy A, Liebelt J, Mowat D, Nakashima M, Saitsu H, Miyake N, Matsumoto N. Coffin-Siris syndrome is a SWI/SNF complex disorder. Clin Genet 2013; 85:548-54. [PMID: 23815551 DOI: 10.1111/cge.12225] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [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: 05/09/2013] [Revised: 06/28/2013] [Indexed: 12/12/2022]
Abstract
Coffin-Siris syndrome (CSS) is a congenital disorder characterized by intellectual disability, growth deficiency, microcephaly, coarse facial features, and hypoplastic or absent fifth fingernails and/or toenails. We previously reported that five genes are mutated in CSS, all of which encode subunits of the switch/sucrose non-fermenting (SWI/SNF) ATP-dependent chromatin-remodeling complex: SMARCB1, SMARCA4, SMARCE1, ARID1A, and ARID1B. In this study, we examined 49 newly recruited CSS-suspected patients, and re-examined three patients who did not show any mutations (using high-resolution melting analysis) in the previous study, by whole-exome sequencing or targeted resequencing. We found that SMARCB1, SMARCA4, or ARID1B were mutated in 20 patients. By examining available parental samples, we ascertained that 17 occurred de novo. All mutations in SMARCB1 and SMARCA4 were non-truncating (missense or in-frame deletion) whereas those in ARID1B were all truncating (nonsense or frameshift deletion/insertion) in this study as in our previous study. Our data further support that CSS is a SWI/SNF complex disorder.
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Affiliation(s)
- Y Tsurusaki
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
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Tsuji T, Uruga T, Nitta K, Kawamura N, Mizumaki M, Suzuki M, Sekizawa O, Ishiguro N, Tada M, Ohashi H, Yamazaki H, Yumoto H, Koyama T, Senba Y, Takeuchi T, Terada Y, Nariyama N, Takeshita K, Fujiwara A, Goto S, Yamamoto M, Takata M, Ishikawa T. Development of Fast Scanning Microscopic XAFS Measurement System. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1742-6596/430/1/012019] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Sekizawa O, Uruga T, Tada M, Nitta K, Kato K, Tanida H, Takeshita K, Takahashi S, Sano M, Aoyagi H, Watanabe A, Nariyama N, Ohashi H, Yumoto H, Koyama T, Senba Y, Takeuchi T, Furukawa Y, Ohata T, Matsushita T, Ishizawa Y, Kudo T, Kimura H, Yamazaki H, Tanaka T, Bizen T, Seike T, Goto S, Ohno H, Takata M, Kitamura H, Ishikawa T, Yokoyama T, Iwasawa Y. New XAFS beamline for structural and electronic dynamics of nanoparticle catalysts in fuel cells under operating conditions. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1742-6596/430/1/012020] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Zhang Y, Katakura Y, Ohashi H, Shirahata S. Efficient and inducible production of human interleukin 6 in Chinese hamster ovary cells using a novel expression system. Cytotechnology 2012; 25:53-60. [PMID: 22358879 DOI: 10.1023/a:1007972002180] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
High level and inducible production of human interleukin 6 (hIL-6) was achieved using a novel expression system in Chinese hamster ovary (CHO) cells. In this system, the transcription of hIL-6 gene under the control of PhCMV*-1 promoter composed of tetracycline operator sequences and a minimal promoter is activated by a chimeric transactivator (tTA) composed of tetracycline repressor and transactivating domain of VP16 protein of herpes simplex virus. The transcription of tTA gene, which is also under the control of PhCMV*-1 promoter, is activated by itself via a positive feedback cycle. The expression of both genes is further enhanced by potentiating the VP16 transactivating domain of tTA transactivator with pX protein of hepatitis B virus. In the presence of tetracycline, the tTA transactivators can not bind to PhCMV*-1 promoter, therefore, the expression of hIL-6 and tTA gene is suppressed, and the pX will not activate basal transcription. In the absence of tetracycline, tTA transactivators bind to PhCMV*-1 promoter and activate efficient transcription of hIL-6 and tTA gene, and the transcription is further enhanced by pX via VP16 transactivating domain. Using this strategy, we isolated a clone (UX1) producing hIL-6 at a rate about 1425 ng/10(6) cells/day. Furthermore, the hIL-6 production is stringently regulated by tetracycline. This results suggested a novel strategy to establish highly efficient, inducible and cell type independent recombinant protein production system by using an artificial promoter to recruit transactivators and coactivators which can synergistically activate transcription.
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Katakura Y, Seto P, Miura T, Ohashi H, Teruya K, Shirahata S. Productivity enhancement of recombinant protein in CHO cells via specific promoter activation by oncogenes. Cytotechnology 2012; 31:103-9. [PMID: 19003130 DOI: 10.1023/a:1008048928053] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
To construct a recombinant protein highly producing cell lines, we have previously developed the Oncogene Activated Production (OAP) system by using BHK-21 cells. Here we verified the availability of the OAP system in CHO cells. We firstly generated 'primed' ras amplified CHO cells, ras clone I, by introducing human c-Ha-ras oncogene into CHO cells. This ras clone I enables quick and easy establishment of recombinant protein hyper producing cell lines by introduction reporter gene of interest. Then we generated I13 by introducing human interleukin 6 (hIL-6) gene as a reporter gene, which showed enhanced productivity rate as compared to A7 established by conventional method. Furthermore, we found that hIL-6 production level of I13 was slightly improved by raising the CO(2) concentration from 5 to 8% possibly because of the enhanced growth rate. We further introduced the E1A oncogene, which has been shown to have a synergistic effect on the recombinant protein production of the ras-amplified BHK-21 cells, then evaluated the productivity. When culture in 5% CO(2) condition, only the slight effect can be seen. However when cultured in 8% CO(2) condition, not only cell number, but also productivity increased significantly, resulted in great augmentation of hIL-6 production, maximum production being 88.6 mug/ml/3 days. This study demonstrates that recombinant protein production level reached commercially desirable level by utilizing our OAP system in CHO cells and optimizing the culture condition.
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Ohashi H, Morita H, Tahara T, Tsunakawa H, Matsumoto A, Ogami K, Kato T, Miyazaki H. Thrombopoietin stimulates proliferation and megakaryocytic differentiation of mouse pro-B cell line BF-TE22. Cytotechnology 2012; 26:199-206. [PMID: 22358617 DOI: 10.1023/a:1007915809529] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
We have isolated and characterized a thrombopoietin (TPO)-dependent BF-TE22 cell line endogenously expressing murine Mpl, which is a subclone of murine pro-B Ba/F3 cells. TPO stimulated the proliferation of BF-TE22 cells in a dose-dependent manner, and also induced the expression of megakaryocyte lineage-specific AP-51 and CD61 cell surface antigens. The results indicate that the murine Mpl on BF-TE22 cells can transmit both proliferation and megakaryocyte lineage-specific differentiation signals to cells. Furthermore, it was shown that IL-3 inhibits the TPO-induced differentiation signals of BF-TE22 cells. These results suggest that the signals mediated by IL-3 predominate over those of TPO in BF-TE22 cells. Thus, BF-TE22 cells will be useful for the biological and biochemical studies of the TPO-Mpl signal transduction mechanism.
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Affiliation(s)
- H Ohashi
- Pharmaceutical Research Laboratory, Kirin Brewery Co., Ltd, Miyahara 3, Takasaki, Gunma, 370, Japan
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Yaginuma T, Yamamoto H, Mitome J, Tanno Y, Yamamoto I, Kobayashi A, Mafune A, Hayakawa H, Yokoyama K, Mori R, Ohashi H, Kaito N, Joki T, Miki J, Yamada H, Furuta N, Matsushima S, Fukuda T, Hosoya T. Successful treatment of monomorphic primary central nervous system post-transplantation lymphoproliferative disorder 5 years after kidney transplantation. Transpl Infect Dis 2012; 14:E102-6. [PMID: 22931101 DOI: 10.1111/j.1399-3062.2012.00781.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2012] [Revised: 05/03/2012] [Accepted: 05/17/2012] [Indexed: 11/27/2022]
Abstract
A 31-year-old man underwent living-related kidney transplantation in 2004 as a consequence of primary focal segmental glomerulosclerosis (FSGS). Four years after the transplantation, we confirmed nephrotic syndrome caused by recurrent FSGS. We performed plasmapheresis and low-density lipoprotein adsorption. We also combined steroid therapy with a reduction in the dose of tacrolimus and an increased dose of mycophenolate mofetil. The nephrotic syndrome improved dramatically with this combined therapeutic approach. However, 10 months after these treatments, he revisited our hospital because of altered consciousness. We detected multiple tumor masses in his brain that were ring enhanced on contrast magnetic resonance imaging. Consequently, we suspected primary central nervous system post-transplantation lymphoproliferative disorder (CNS-PTLD). We performed a craniotomy to biopsy the brain tumors. The biopsy specimen showed Epstein-Barr virus-associated diffuse large B-cell lymphoma. There is no definitive treatment for CNS-PTLD. Therefore, we treated the primary CNS-PTLD successfully with whole-brain radiation and discontinuation of immunosuppression therapy.
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Affiliation(s)
- T Yaginuma
- Division of Kidney and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan.
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47
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Numata S, Tsutsumi Y, Ohashi H. Aortic arch surgery with a mild-to-moderate circulatory arrest: the significance of aortic arch pathology. Eur J Cardiothorac Surg 2012; 42:602; author reply 602-3. [DOI: 10.1093/ejcts/ezs161] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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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48
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Hishikawa A, Fushitani M, Hikosaka Y, Matsuda A, Liu CN, Morishita T, Shigemasa E, Nagasono M, Tono K, Togashi T, Ohashi H, Kimura H, Senba Y, Yabashi M, Ishikawa T. Enhanced nonlinear double excitation of He in intense extreme ultraviolet laser fields. Phys Rev Lett 2011; 107:243003. [PMID: 22242995 DOI: 10.1103/physrevlett.107.243003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2011] [Indexed: 05/31/2023]
Abstract
Nonlinear, three-photon double excitation of He in intense extreme ultraviolet free-electron laser fields (∼24.1 eV, ∼5 TW/cm2) is presented. Resonances to the doubly excited states converging to the He+ N=3 level are revealed by the shot-by-shot photoelectron spectroscopy and identified by theoretical calculations based on the time-dependent Schrödinger equation for the two-electron atom under a laser field. It is shown that the three-photon double excitation is enhanced by intermediate Rydberg states below the first ionization threshold, giving a greater contribution to the photoionization yields than the two-photon process by more than 1 order of magnitude.
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Affiliation(s)
- A Hishikawa
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya, Aichi 464-8602, Japan.
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49
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Horiba K, Nakamura Y, Nagamura N, Toyoda S, Kumigashira H, Oshima M, Amemiya K, Senba Y, Ohashi H. Scanning photoelectron microscope for nanoscale three-dimensional spatial-resolved electron spectroscopy for chemical analysis. Rev Sci Instrum 2011; 82:113701. [PMID: 22128978 DOI: 10.1063/1.3657156] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In order to achieve nondestructive observation of the three-dimensional spatially resolved electronic structure of solids, we have developed a scanning photoelectron microscope system with the capability of depth profiling in electron spectroscopy for chemical analysis (ESCA). We call this system 3D nano-ESCA. For focusing the x-ray, a Fresnel zone plate with a diameter of 200 μm and an outermost zone width of 35 nm is used. In order to obtain the angular dependence of the photoelectron spectra for the depth-profile analysis without rotating the sample, we adopted a modified VG Scienta R3000 analyzer with an acceptance angle of 60° as a high-resolution angle-resolved electron spectrometer. The system has been installed at the University-of-Tokyo Materials Science Outstation beamline, BL07LSU, at SPring-8. From the results of the line-scan profiles of the poly-Si/high-k gate patterns, we achieved a total spatial resolution better than 70 nm. The capability of our system for pinpoint depth-profile analysis and high-resolution chemical state analysis is demonstrated.
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Affiliation(s)
- K Horiba
- Department of Applied Chemistry, The University of Tokyo, Tokyo 113-8656, Japan.
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50
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Moshammer R, Pfeifer T, Rudenko A, Jiang YH, Foucar L, Kurka M, Kühnel KU, Schröter CD, Ullrich J, Herrwerth O, Kling MF, Liu XJ, Motomura K, Fukuzawa H, Yamada A, Ueda K, Ishikawa KL, Nagaya K, Iwayama H, Sugishima A, Mizoguchi Y, Yase S, Yao M, Saito N, Belkacem A, Nagasono M, Higashiya A, Yabashi M, Ishikawa T, Ohashi H, Kimura H, Togashi T. Second-order autocorrelation of XUV FEL pulses via time resolved two-photon single ionization of He. Opt Express 2011; 19:21698-21706. [PMID: 22109020 DOI: 10.1364/oe.19.021698] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Second-order autocorrelation spectra of XUV free-electron laser pulses from the Spring-8 Compact SASE Source (SCSS) have been recorded by time and momentum resolved detection of two-photon single ionization of He at 20.45 eV using a split-mirror delay-stage in combination with high-resolution recoil-ion momentum spectroscopy (COLTRIMS). From the autocorrelation trace we extract a coherence time of 8 ± 2 fs and a mean pulse duration of 28 ± 5 fs, much shorter than estimations based on electron bunch-length measurements. Simulations within the partial coherence model [Opt. Lett. 35, 3441 (2010)] are in agreement with experiment if a pulse-front tilt across the FEL beam diameter is taken into account that leads to a temporal shift of about 6 fs between both pulse replicas.
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Affiliation(s)
- R Moshammer
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany.
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