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Maeda A, Tokumoto JY, Kojima S, Fujimori K, Moriuchi-Kawakami T, Hirahara M. Binding of Stimuli-Responsive Ruthenium Aqua Complexes with 9-Ethylguanine. ACS Omega 2023; 8:37391-37401. [PMID: 37841177 PMCID: PMC10569010 DOI: 10.1021/acsomega.3c05343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 09/14/2023] [Indexed: 10/17/2023]
Abstract
Stimuli-responsive ruthenium complexes proximal- and distal-[Ru(C10tpy)(C10pyqu) OH2]2+ (proximal-1 and distal-1; C10tpy = 4'-decyloxy-2,2':6',2″-terpyridine and C10pyqu = 2-[2'-(6'-decyloxy)-pyridyl]quinoline) were experimentally studied for adduct formation with a model DNA base. At 303 K, proximal-1 exhibited 1:1 adduct formation with 9-ethylguanine (9-EtG) to yield proximal-[Ru(C10tpy)(C10pyqu)(9-EtG)]2+ (proximal-RuEtG). Rotation of the guanine ligand on the ruthenium center was sterically hindered by the presence of an adjacent quinoline moiety at 303 K. Results from 1H NMR measurements indicated that photoirradiation of a proximal-RuEtG solution caused photoisomerization to distal-RuEtG, whereas heating of proximal-RuEtG caused ligand substitution to proximal-1. The distal isomer of the aqua complex, distal-1, was observed to slowly revert to proximal-1 at 303 K. In the presence of 9-EtG, distal-1 underwent thermal back-isomerization to proximal-1 and adduct formation to distal-RuEtG. Kinetic analysis of 1H NMR measurements showed that adduct formation between proximal-1 and 9-EtG was 8-fold faster than that between distal-1 and 9-EtG. This difference may be attributed to intramolecular hydrogen bonding and steric repulsion between the aqua ligand and the pendant moiety of the bidentate ligand..
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Affiliation(s)
- Atsuki Maeda
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi Ward, Osaka 535-8585, Japan
| | - Jun-ya Tokumoto
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi Ward, Osaka 535-8585, Japan
| | - Soichiro Kojima
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi Ward, Osaka 535-8585, Japan
| | - Keiichi Fujimori
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi Ward, Osaka 535-8585, Japan
| | - Takayo Moriuchi-Kawakami
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi Ward, Osaka 535-8585, Japan
| | - Masanari Hirahara
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi Ward, Osaka 535-8585, Japan
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Fujimori K, Izutani A, Tsujimoto K, Hirahara M, Moriuchi-Kawakami T, Ueda M, Suzue T, Kimoto H, Okamura K. Deep-sea in situ determination of sulfide using a sensitized chemiluminescent terbium complex. ANAL SCI 2023:10.1007/s44211-023-00323-7. [PMID: 36959381 DOI: 10.1007/s44211-023-00323-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 03/09/2023] [Indexed: 03/25/2023]
Abstract
A new chemiluminescence (CL) method based on the chemiluminescent reaction between sulfide and an acidic permanganate solution was used to quantify sulfide in seawater. A terbium-pipemidic acid complex was used as CL enhancer. The method was used to determine sulfide in the concentration range of 1-30 μmol/L in artificial seawater samples. The limit of detection of the method was 21 nmol/L sulfide. The sensitivity of the CL method was eight times higher than that of the CL method reported previously. Br- ions, which are conservative ions, interfered with sulfide. We investigated the effects of salinity, water temperature, and interfering chemicals,such asheavy-metal ions and organic matter, on the performance of the CL method. In addition, sulfite-spiked natural seawater samples were analyzed. The results demonstrate that the CL method can be used to develop a deep-sea sulfide analyzer.
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Affiliation(s)
- Keiichi Fujimori
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1, Omiya, Asahi, Osaka, 535-8585, Japan.
| | - Akira Izutani
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1, Omiya, Asahi, Osaka, 535-8585, Japan
| | - Kenta Tsujimoto
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1, Omiya, Asahi, Osaka, 535-8585, Japan
| | - Masanari Hirahara
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1, Omiya, Asahi, Osaka, 535-8585, Japan
| | - Takayo Moriuchi-Kawakami
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1, Omiya, Asahi, Osaka, 535-8585, Japan
| | - Masato Ueda
- Kimoto Electric Co. Ltd., 3-1 Funahashi, Ten-Noji, Osaka, 543-0024, Japan
| | - Takahiko Suzue
- Kimoto Electric Co. Ltd., 3-1 Funahashi, Ten-Noji, Osaka, 543-0024, Japan
| | - Hideshi Kimoto
- Kimoto Electric Co. Ltd., 3-1 Funahashi, Ten-Noji, Osaka, 543-0024, Japan
| | - Kei Okamura
- Kochi University, Research and Education Faculty, B200 Monobe, Nankoku, Kochi, 783-8502, Japan
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Iki M, Fujimori K, Nakatoh S, Tamaki J, Ishii S, Okimoto N, Kamiya K, Ogawa S. Guideline adherence by physicians for management of glucocorticoid-induced osteoporosis in Japan: a nationwide health insurance claims database study. Osteoporos Int 2022; 33:1097-1108. [PMID: 35022812 DOI: 10.1007/s00198-021-06265-y] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 12/06/2021] [Indexed: 12/12/2022]
Abstract
UNLABELLED Risk of fracture due to glucocorticoid-induced osteoporosis (GIO) can be reduced by anti-osteoporosis (OP) medications. The proportion of patients on long-term glucocorticoid therapy who received anti-OP medications according to the GIO management guidelines has increased in recent years, but is still suboptimal. INTRODUCTION Adherence of physicians to guidelines for glucocorticoid (GC)-induced osteoporosis (GIO) management is currently unclear. This study aimed to clarify the state of guideline adherence by physicians in Japan and identify factors associated with guideline adherence using a nationwide health insurance claims database (NDBJ). METHODS Patients aged ≥ 50 years who were prescribed GC for ≥ 90 days after 180 days without a GC prescription and who were followed up for osteoporosis (OP) management for the subsequent 360 days during the period spanning 2012-2018 were selected from the NDBJ. Guideline adherence was evaluated with the proportion of patients who received OP management as recommended by the Japanese guidelines. Information on previous vertebral and hip fractures, dementia, and polypharmacy was obtained. Factors associated with OP management were evaluated by logistic regression analysis. RESULTS A total of 512,296 patients were considered to be at high risk of fracture according to the guidelines. Proportions of patients receiving OP management (BMD testing or anti-OP medications) have increased in recent years. In 2017, 33.7% of men and 55.3% of women received OP management in the initial 90 days of GC therapy. Female sex, previous anti-OP medications, polypharmacy, and higher GC dose were significantly associated with receiving OP management, while dementia showed an inverse association. A prior history of hip fracture, a strong risk factor for future fracture, was not significantly associated with receiving OP management. CONCLUSIONS Although guideline adherence by physicians has increased in recent years, it remains suboptimal. Further efforts to improve guideline adherence are necessary. TRIAL REGISTRATION NUMBER The present study is not registered.
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Affiliation(s)
- M Iki
- Department of Public Health, Kindai University Faculty of Medicine, 377-2 Oono-higashi, Osaka, 589-8511, Osaka-Sayama, Japan.
- National Database Japan-Osteoporosis Management (NDBJ-OS) Study Group, Department of Public Health, Kindai University Faculty of Medicine, 377-2 Oono-higashi, Osaka, 589-8511, Osaka-Sayama, Japan.
| | - K Fujimori
- National Database Japan-Osteoporosis Management (NDBJ-OS) Study Group, Department of Public Health, Kindai University Faculty of Medicine, 377-2 Oono-higashi, Osaka, 589-8511, Osaka-Sayama, Japan
- Department of Health Administration and Policy, Tohoku University School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - S Nakatoh
- National Database Japan-Osteoporosis Management (NDBJ-OS) Study Group, Department of Public Health, Kindai University Faculty of Medicine, 377-2 Oono-higashi, Osaka, 589-8511, Osaka-Sayama, Japan
- Department of Orthopedic Surgery, Asahi General Hospital, 477 Tomari, Asaimachi, Shimo-Nikawa-gun, Toyama, 939-0798, Japan
| | - J Tamaki
- National Database Japan-Osteoporosis Management (NDBJ-OS) Study Group, Department of Public Health, Kindai University Faculty of Medicine, 377-2 Oono-higashi, Osaka, 589-8511, Osaka-Sayama, Japan
- Department of Hygiene and Public Health, Osaka Medical and Pharmaceutical University, 2-7 Daigakumachi, Takatsuki, Osaka, 569-8686, Japan
| | - S Ishii
- National Database Japan-Osteoporosis Management (NDBJ-OS) Study Group, Department of Public Health, Kindai University Faculty of Medicine, 377-2 Oono-higashi, Osaka, 589-8511, Osaka-Sayama, Japan
- Department of Regulatory Science, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachiouji, Tokyo, 193-0392, Japan
| | - N Okimoto
- National Database Japan-Osteoporosis Management (NDBJ-OS) Study Group, Department of Public Health, Kindai University Faculty of Medicine, 377-2 Oono-higashi, Osaka, 589-8511, Osaka-Sayama, Japan
- Okimoto Clinic, 185-4 Kubi, Yutaka-machi, Kure, Hiroshima, 734-0304, Japan
| | - K Kamiya
- National Database Japan-Osteoporosis Management (NDBJ-OS) Study Group, Department of Public Health, Kindai University Faculty of Medicine, 377-2 Oono-higashi, Osaka, 589-8511, Osaka-Sayama, Japan
- Department of Hygiene and Public Health, Osaka Medical and Pharmaceutical University, 2-7 Daigakumachi, Takatsuki, Osaka, 569-8686, Japan
| | - S Ogawa
- National Database Japan-Osteoporosis Management (NDBJ-OS) Study Group, Department of Public Health, Kindai University Faculty of Medicine, 377-2 Oono-higashi, Osaka, 589-8511, Osaka-Sayama, Japan
- Department of Geriatric Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8511, Japan
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Hirahara M, Furutani S, Goto H, Fujimori K, Moriuchi-Kawakami T. A Visible-Light and Temperature Responsive Host-Guest System: Photoisomerization of a Ruthenium Complex and Inclusion Complex Formation with Cyclodextrins. Dalton Trans 2022; 51:4477-4483. [DOI: 10.1039/d1dt04003k] [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: 11/21/2022]
Abstract
In the present study, we investigated the visible-light- and thermal-stimuli-responsive properties of a host–guest system based on proximal- and distal-[Ru(C10tpy)(C10pyqu)OH2]2+ (proximal and distal-1, C10tpy = 4’-decyloxy-2,2’;6’,2”-terpyridine, C10pyqu = 2-[2’-(6’-decyloxy)-pyridyl]quinoline). The...
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Moriuchi-Kawakami T, Sekiguchi Y, Hattori S, Otsuki T, Fujimori K, Moriuchi T, Urahama Y. Proton spin relaxation study with pulsed NMR on the plasticization of Na + ion-selective electrode membranes prepared from PVCs with different degrees of polymerization. Analyst 2020; 145:3832-3838. [DOI: 10.1039/c9an02355k] [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: 11/21/2022]
Abstract
The proton spin–spin relaxation times (T2) of ion-selective electrode membranes with differences in the polymerization degree of the incorporated poly(vinyl chloride) (PVC) polymers were investigated.
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Affiliation(s)
| | - Yuria Sekiguchi
- Department of Applied Chemistry
- Faculty of Engineering
- Osaka Institute of Technology
- Asahi
- Japan
| | - Shintaro Hattori
- Department of Applied Chemistry
- Faculty of Engineering
- Osaka Institute of Technology
- Asahi
- Japan
| | - Takahiro Otsuki
- Department of Applied Chemistry
- Faculty of Engineering
- Osaka Institute of Technology
- Asahi
- Japan
| | - Keiichi Fujimori
- Department of Applied Chemistry
- Faculty of Engineering
- Osaka Institute of Technology
- Asahi
- Japan
| | - Toshiyuki Moriuchi
- Division of Molecular Materials Science
- Graduate School of Science
- Osaka City University
- Osaka 558-8585
- Japan
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Murata T, Suzuki S, Kyozuka H, Chishiki M, Tanaka H, Fujimori K. Fetal primary volvulus with abnormal heart rate patterns on cardiotocography. CLIN EXP OBSTET GYN 2019. [DOI: 10.12891/ceog4878.2019] [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: 11/01/2022]
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Nagae A, Nishikawa K, Fujimori K, Katoh T, Miura T, Miyashita Y, Kashiwagi D, Senda K, Sakai T, Saigusa T, Ebisawa S, Motoki H, Okada A, Kuwahara K. P943The impact of diabetes on patients with frail after endovascular treatments: from I-PAD registry. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0537] [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
Diabetes mellitus (DM) is known to be one of the risks of arteriosclerosis. However, it is still unknown whether DM is a risk factor also in secondary prevention of frail patients after endovascular treatments (EVT)
Purpose
To investigate impact of diabetes on patients with frail after EVT.
Methods
From July 2015 to July 2016, 371 consecutive PAD patients who performed EVT were enrolled in I-PAD registry. We could conduct follow up survey 361 patients (446 lesions) and divided into 2 groups; with diabetes (185 patients, 226 lesions) or without diabetes (176 patients, 220 lesions) and analyzed. And among them,we selected 96 patients with frail and divided into 2 groups; with diabetes (49 patients, 70 lesions) or without diabetes (46 patients, 58 lesions) and analyzed. We defined frail patients as the patients with Clinical Frailty Scale 5 (mild frail) or higher. The primary end point was all-cause-death and major adverse limb events (MALE: TLR, TVR, major amputations) at 1 year.
Result
At 1 years in the patients group with diabetes, overall survival and freedom from MALE were significantly lower (81.7% vs 95.8% P<0.0001; 80.0% vs 94.6%, P<0.0001) than the group without diabetes.Among the patients with frail, between the patients group with diabetes and the group without, there is no significant differences in overall survival and freedom from MALE (88.2% vs 88.9% P=0.83; 80.7% vs 84.1%, P=0.55) at 5 years.
Conclusion
The prognosis of patients with diabetes after EVT was worse than the patient without. On the other hand, the prognosis of frail patients with diabetes after EVT was no difference with the frail patient without diabetes in this study.
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Affiliation(s)
- A Nagae
- Shinshu University Hospital, Matsumoto, Japan
| | - K Nishikawa
- Shinshu University Hospital, Matsumoto, Japan
| | - K Fujimori
- Shinshu University Hospital, Matsumoto, Japan
| | - T Katoh
- Shinshu University Hospital, Matsumoto, Japan
| | - T Miura
- Nagano municipal hospital, Cardiology, Nagano, Japan
| | - Y Miyashita
- Nagano Red Cross Hospital, Cardiology, Nagano, Japan
| | - D Kashiwagi
- Shinshu University Hospital, Matsumoto, Japan
| | - K Senda
- Shinshu University Hospital, Matsumoto, Japan
| | - T Sakai
- Shinshu University Hospital, Matsumoto, Japan
| | - T Saigusa
- Shinshu University Hospital, Matsumoto, Japan
| | - S Ebisawa
- Shinshu University Hospital, Matsumoto, Japan
| | - H Motoki
- Shinshu University Hospital, Matsumoto, Japan
| | - A Okada
- Shinshu University Hospital, Matsumoto, Japan
| | - K Kuwahara
- Shinshu University Hospital, Matsumoto, Japan
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Fujimori K, Nagae A, Miura T, Katoh T, Hirabayashi M, Kashiwagi D, Yokota D, Yanagisawa T, Sakai T, Senda K, Saigusa T, Ebisawa S, Okada A, Motoki H, Kuwahara K. P942Impact of left ventricular ejection fraction in patients with critical limb ischemia: from I-PAD registry. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0536] [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
Introduction
In patients with critical limb ischemia (CLI) it is known that malnutrition, low BMI, inflammation and so on are prognostic factors. But, it is unclear whether left ventricular ejection fraction (LVEF) affects prognosis of CLI patients. So we investigated that LVEF affects prognosis of CLI patients.
Methods
From July 2015 to July 2016, 371 consecutive peripheral artery disease patients who performed endovascular treatment (EVT) were enrolled in I-PAD registry. 179 of them were patients with CLI. We could conduct follow up survey about 126 (age 75.5±11.1, men 63.5%) and divided two groups according to their LVEF (group with LVEF≤40%, n=13, group without LVEF≤40%, n=113). The primary end point was major adverse limb events (MALE: TLR, TVR, major amputations) and secondary end point was all-cause death.
Results
The median follow-up period was 11.5±6.7 months. The 18 months MALE rate was significant higher in the group with low LVEF than group without low LVEF (76.9% vs 37.2% p<0.05). The 18months all-cause death tended to be higher in the group with low LVEF, however there was not statistical significance in the two groups (53.8% vs 24.8% p=0.09).
Conclusion
LVEF was associated with MALE in patients with CLI.
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Affiliation(s)
- K Fujimori
- Shinshu University Hospital, Matsumoto, Japan
| | - A Nagae
- Shinshu University Hospital, Matsumoto, Japan
| | - T Miura
- Nagano municipal hospital, cardiology, Nagano, Japan
| | - T Katoh
- Shinshu University Hospital, Matsumoto, Japan
| | - M Hirabayashi
- Shinonoi General Hospital, cardiology, Matsumoto, Japan
| | - D Kashiwagi
- Shinshu University Hospital, Matsumoto, Japan
| | - D Yokota
- Iida Hospital, cardiology, iida, Japan
| | | | - T Sakai
- Shinshu University Hospital, Matsumoto, Japan
| | - K Senda
- Shinshu University Hospital, Matsumoto, Japan
| | - T Saigusa
- Shinshu University Hospital, Matsumoto, Japan
| | - S Ebisawa
- Shinshu University Hospital, Matsumoto, Japan
| | - A Okada
- Shinshu University Hospital, Matsumoto, Japan
| | - H Motoki
- Shinshu University Hospital, Matsumoto, Japan
| | - K Kuwahara
- Shinshu University Hospital, Matsumoto, Japan
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Fujimori K, Nagae A, Miura T, Katoh T, Hirabayashi M, Kashiwagi D, Yokota D, Yanagisawa T, Sakai T, Senda K, Saigusa T, Ebisawa S, Okada A, Motoki H, Kuwahara K. P936Impact of left ventricular ejection fraction in patients with peripheral artery disease: from I-PAD registry. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0530] [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
Introduction
In patients with peripheral artery disease (PAD) it is known that CVD is one of prognostic factors. But, it is unclear whether left ventricular ejection fraction (LVEF) affects prognosis of PAD patients. So we investigated that LVEF affects prognosis of PAD patients.
Methods
From July 2015 to July 2016, 371 consecutive PAD patients who performed endovascular treatment (EVT) were enrolled in I-PAD registry. We could conduct follow up survey about 337 (age 73.8±9.6, men 72.4%) patients and divided two groups according to their LVEF (group with LVEF≤40%, n=18, group without LVEF≤40%, n=319). The primary end point was major adverse limb events (MALE: TLR, TVR, major amputations) and secondary end point was all-cause death.
Results
The median follow-up period was 13.6±5.7 months. The 18 months MALE and all-cause death rate were significantly higher in the group with low LVEF than group without low LVEF (61.1% vs 21.6% p<0.001, 44.4% vs 11.6% p<0.001).
Conclusion
LVEF was significantly associated with MALE and all-cause death in patients with PAD.
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Affiliation(s)
- K Fujimori
- Shinshu University Hospital, Matsumoto, Japan
| | - A Nagae
- Shinshu University Hospital, Matsumoto, Japan
| | - T Miura
- Nagano municipal hospital, cardiology, Nagano, Japan
| | - T Katoh
- Shinshu University Hospital, Matsumoto, Japan
| | - M Hirabayashi
- Shinonoi General Hospital, cardiology, Matsumoto, Japan
| | - D Kashiwagi
- Shinshu University Hospital, Matsumoto, Japan
| | - D Yokota
- Iida Hospital, cardiology, iida, Japan
| | | | - T Sakai
- Shinshu University Hospital, Matsumoto, Japan
| | - K Senda
- Shinshu University Hospital, Matsumoto, Japan
| | - T Saigusa
- Shinshu University Hospital, Matsumoto, Japan
| | - S Ebisawa
- Shinshu University Hospital, Matsumoto, Japan
| | - A Okada
- Shinshu University Hospital, Matsumoto, Japan
| | - H Motoki
- Shinshu University Hospital, Matsumoto, Japan
| | - K Kuwahara
- Shinshu University Hospital, Matsumoto, Japan
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Tamaki J, Fujimori K, Ikehara S, Kamiya K, Nakatoh S, Okimoto N, Ogawa S, Ishii S, Iki M. Estimates of hip fracture incidence in Japan using the National Health Insurance Claim Database in 2012-2015. Osteoporos Int 2019; 30:975-983. [PMID: 30648192 DOI: 10.1007/s00198-019-04844-8] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 01/04/2019] [Indexed: 10/27/2022]
Abstract
UNLABELLED Using the nationwide health insurance claims database, we found that the age-standardized hip fracture incidence rates in Japan indicated significant increase in males but no significant change in females during 2012-2015. The fracture risk in subjects aged 75-84 years indicated decrease in females but no change in males. INTRODUCTION Nationwide registry data on hip fractures have not yet been established in Japan. Using the newly developed National Database of Health Insurance Claims (NDB), which covers the entire Japanese population, we investigated the incidence rates of hip fractures and the associated regional differences. We also assessed the frequency of osteoporosis prescriptions, bone turnover marker (BTM) level, and bone mineral density (BMD) measurements. METHODS The annual numbers of hip fractures, osteoporosis prescriptions, and BTM level and BMD measurements by prefecture from 2012 to 2015 were obtained from NDB data. We calculated the standardized claims-data ratio (SCR) in each prefecture. RESULTS The age-standardized incidence rates from 2012 to 2015 indicated no significant change in females and significant increase in males (p value for trend; 0.920, 0.002, respectively). The fracture risk decreased in females aged 75-84 years and indicated no increase in females aged 85-89 years during 2012-2015, while the fracture risk indicated no change in males aged 75-84 years and increased in males aged 85-89 years. The frequency of osteoporosis prescriptions, BTM level measurements, and BMD measurements in the general population in the corresponding period increased with statistical or marginal significance in females and males. West-east regional differences were observed in the incidence rates; the highest SCR values in the western prefectures were approximately double the lowest values in the eastern prefectures. CONCLUSIONS The age-standardized hip fracture incidence rates indicated no significant change in females and significant increase in males in Japan from 2012 to 2015.
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Affiliation(s)
- J Tamaki
- Department of Hygiene and Public Health, Osaka Medical College, 2-7 Daigaku-Machi, Takatsuki, Osaka, 569-8686, Japan.
| | - K Fujimori
- Department of Health Administration and Policy, Tohoku University School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - S Ikehara
- Department of Hygiene and Public Health, Osaka Medical College, 2-7 Daigaku-Machi, Takatsuki, Osaka, 569-8686, Japan
| | - K Kamiya
- Department of Hygiene and Public Health, Osaka Medical College, 2-7 Daigaku-Machi, Takatsuki, Osaka, 569-8686, Japan
| | - S Nakatoh
- Asahi General Hospital, 477, Tomari, Asahi-machi, Shimo-Shinkawa-gun, Toyama, 939-0798, Japan
| | - N Okimoto
- Okimoto Clinic, 185-4, Kubi, Yutaka-machi, Kure-city, Hiroshima, 734-0304, Japan
| | - S Ogawa
- Department of Geriatric Medicine, Graduate School of Medicine, the University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - S Ishii
- Japan Osteoporosis Foundation, 2-14, Oodemma-cho, Nihombashi, Chuo-ku, Tokyo, 103-0011, Japan
| | - M Iki
- Department of Public Health, Kindai University Faculty of Medicine, 377-2, Oono-Higashi, Osaka Sayama city, Osaka, 589-8511, Japan
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Fujimori K, Arita A, Kumagai T. Effect of mechanical properties of adhesives on bond strength. Dent Mater 2019. [DOI: 10.1016/j.dental.2019.08.030] [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: 11/16/2022]
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Kyozuka H, Takiguchi K, Owada A, Endo Y, Kojima M, Suzuki S, Fujimori K. Two cases of placenta accreta with conservative management. CLIN EXP OBSTET GYN 2018. [DOI: 10.12891/ceog3815.2018] [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: 11/01/2022]
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Moriuchi-Kawakami T, Hisada Y, Higashikado A, Inoue T, Fujimori K, Moriuchi T. Bis(1-pyrenylmethyl)-2-benzyl-2-methyl-malonate as a Cu 2+ Ion-Selective Fluoroionophore. Molecules 2017; 22:molecules22091415. [PMID: 28841193 PMCID: PMC6151551 DOI: 10.3390/molecules22091415] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 08/22/2017] [Accepted: 08/23/2017] [Indexed: 01/02/2023] Open
Abstract
A new malonate possessing two pyrene moieties was synthesized as a fluoroionophore, and its structure and fluorescence spectroscopic properties were investigated. When excited at 344 nm in acetonitrile/chloroform (9:1, v/v), the synthesized bispyrenyl malonate has the fluorescence of intramolecular excimer (λem = 467 nm) emissions and not a pyrene monomer emission (λem = 394 nm). A large absolute fluorescence quantum yield was obtained in the solid state (ΦPL = 0.65) rather than in solution (ΦPL = 0.13). X-ray crystallography analysis clarified the molecular structure and alignment of the bispyrenyl malonate in the crystal phase, elucidating its fluorescence spectroscopic properties. Such analysis also suggests there are intramolecular C-H···π interactions and intermolecular π···π interactions between the pyrenyl rings. Interestingly, the synthesized bispyrenyl malonate exhibits excellent fluorescence sensing for the Cu2+ ion. Remarkable fluorescence intensity enhancement was only observed with the addition of the Cu2+ ion.
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Affiliation(s)
- Takayo Moriuchi-Kawakami
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi, Osaka 535-8585, Japan.
| | - Youji Hisada
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi, Osaka 535-8585, Japan.
| | - Akihisa Higashikado
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi, Osaka 535-8585, Japan.
| | - Tsubasa Inoue
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi, Osaka 535-8585, Japan.
| | - Keiichi Fujimori
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi, Osaka 535-8585, Japan.
| | - Toshiyuki Moriuchi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan.
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Fujimori K, Sakata Y, Moriuchi‐Kawakami T, Shibutani Y. Enhanced chemiluminescence for trazodone trace analysis based on acidic permanganate oxidation in concurrent presence of rhodamine 6G. LUMINESCENCE 2017; 32:1240-1245. [PMID: 28422449 DOI: 10.1002/bio.3317] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Revised: 02/14/2017] [Accepted: 02/20/2017] [Indexed: 01/28/2023]
Affiliation(s)
- Keiichi Fujimori
- Department of Applied Chemistry, Faculty of Engineering Osaka Institute of Technology Osaka Japan
| | - Yuta Sakata
- Department of Applied Chemistry, Faculty of Engineering Osaka Institute of Technology Osaka Japan
| | - Takayo Moriuchi‐Kawakami
- Department of Applied Chemistry, Faculty of Engineering Osaka Institute of Technology Osaka Japan
| | - Yasuhiko Shibutani
- Department of Applied Chemistry, Faculty of Engineering Osaka Institute of Technology Osaka Japan
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Kyozuka H, Watanabe T, Furukawa S, Soeda S, Kiko Y, Fujimori K. Lymphoepithelioma-like carcinoma of the uterine cervix: a case report. EUR J GYNAECOL ONCOL 2017; 38:459-461. [PMID: 29693892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Lymphoepithelioma-like carcinoma (LELC) is a rare variant of carcinoma of the uterine cervix, of which Epstein-Barr virus (EBV) and/or human papilloma virus (HPV) may play an important role in the pathogenesis. The authors report a case of a patient with cervical LELC who was also examined for the presence of EBV and HPV. A 31-year-old Japanese female presented with irregular genital bleeding. The biopsy showed an invasive squamous cell carcinoma. Based on the clinical data, the patient was diagnosed as having squamous cervical carcinoma, and radical hysterectomy with ovarian conservation was performed. A diagnosis of cervical LELC was then made by histological methods. An additional examination revealed that the patient was infected with HPV types 16 and 71, but not infected with EBV.
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Hasegawa T, Fujimori K, Ohishi Y, Ono M, Takaesu Y, Ito H, Isaka K. Gasless Laparoscopic Myomectomy by the Abdominal Wall Lifting Technique. J Minim Invasive Gynecol 2016. [DOI: 10.1016/j.jmig.2016.08.214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Kamiya K, Ishikawa T, Yasumura S, Sakai A, Ohira T, Takahashi H, Ohtsuru A, Suzuki S, Hosoya M, Maeda M, Yabe H, Fujimori K, Yamashita S, Ohto H, Abe M. EXTERNAL AND INTERNAL EXPOSURE TO FUKUSHIMA RESIDENTS. Radiat Prot Dosimetry 2016; 171:7-13. [PMID: 27473698 DOI: 10.1093/rpd/ncw185] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The Great East Japan Earthquake of 11 March 2011, caused the Fukushima Daiichi Nuclear Power Plant Accident, which resulted in the release of a large amount of radioactive materials into the environment, and there is a serious concern about the radiation effects on the health of residents living in the affected areas. The evaluation of exposure dose is fundamental for the estimation of health effects, and whenever possible, the exposure dose should be evaluated by actual measurements as opposed to estimations. Here, the outline of the exposure doses of residents estimated from surveys or obtained by measurements is described. Fukushima Health Management Survey reported the results for 460 408 residents during the first 4 months after the accident; 66.3% received doses <1 mSv, 94.9% received <2 mSv, 99.7% received <5 mSv and the maximum dose was 25 mSv. Thus, it was demonstrated that the results from personal dosemeter measurements were comparable to the estimations. The dose assessment of internal exposure of 184 205 residents conducted by Fukushima Prefecture by using whole body counter showed that 99.986% received <1 mSv, with the maximum dose being 3 mSv. Regarding exposure of the thyroid, there is not enough data for the Fukushima accident, but it is presumed that thyroid doses are much lower than those from Chernobyl. The outline of exposure doses of residents in result of the accident is still being clarified, questions and uncertainties in dose assessment remain and further efforts for more accurate dosimetry are required continuously.
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Affiliation(s)
- K Kamiya
- Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima 734-8553, Japan Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima 960-1295, Japan
| | - T Ishikawa
- Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima 960-1295, Japan School of Medicine, Fukushima Medical University, Fukushima 960-1295, Japan
| | - S Yasumura
- Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima 960-1295, Japan School of Medicine, Fukushima Medical University, Fukushima 960-1295, Japan
| | - A Sakai
- Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima 960-1295, Japan School of Medicine, Fukushima Medical University, Fukushima 960-1295, Japan
| | - T Ohira
- Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima 960-1295, Japan School of Medicine, Fukushima Medical University, Fukushima 960-1295, Japan
| | - H Takahashi
- Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima 960-1295, Japan
| | - A Ohtsuru
- Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima 960-1295, Japan School of Medicine, Fukushima Medical University, Fukushima 960-1295, Japan
| | - S Suzuki
- School of Medicine, Fukushima Medical University, Fukushima 960-1295, Japan
| | - M Hosoya
- Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima 960-1295, Japan School of Medicine, Fukushima Medical University, Fukushima 960-1295, Japan
| | - M Maeda
- Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima 960-1295, Japan School of Medicine, Fukushima Medical University, Fukushima 960-1295, Japan
| | - H Yabe
- Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima 960-1295, Japan School of Medicine, Fukushima Medical University, Fukushima 960-1295, Japan
| | - K Fujimori
- Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima 960-1295, Japan School of Medicine, Fukushima Medical University, Fukushima 960-1295, Japan
| | - S Yamashita
- Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima 960-1295, Japan Atomic Bomb Disease Institute, Nagasaki University, Nagasaki 852-8521, Japan
| | - H Ohto
- Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima 960-1295, Japan School of Medicine, Fukushima Medical University, Fukushima 960-1295, Japan
| | - Masafumi Abe
- Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima 960-1295, Japan
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Fujimori K, Matsumoto N, Arita A, Kumagai T. Evaluation of bonding properties of G-Cem linkforce to ceramic restorations. Dent Mater 2016. [DOI: 10.1016/j.dental.2016.08.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Yoshida S, Yamagata Y, Murayama K, Watanabe K, Imura T, Igarashi Y, Inagaki A, Fujimori K, Ohashi K, Ohuchi N, Satomi S, Goto M. The influence of collagen III expression on the efficiency of cell isolation with the use of collagenase H. Transplant Proc 2015; 46:1942-4. [PMID: 25131077 DOI: 10.1016/j.transproceed.2014.06.007] [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: 12/13/2022]
Abstract
OBJECTIVE We previously demonstrated that collagenase H (ColH) plays a crucial role in rat islet isolation, whereas collagenase G (ColG) plays only a supporting role. We also showed that collagen III appears to be one of the key targets of ColH based on a mass spectrometry analysis. In the present study, we investigated whether our novel findings in an islet isolation model are universally applicable for other types of cell isolation, such as a hepatocyte isolation, with the use of enzyme blends of recombinant collagenases. METHODS As the first step, the expression of one of the main matrix components, collagen III, on rat pancreatic and hepatic tissues was assessed with the use of immunohistochemical staining. ColG and ColH were expressed in recombinant E. coli carrying expression plasmids for each collagenase. Then the efficiency of the collagenase subtype on rat hepatocyte isolation was evaluated in terms of cell yield with the use of thermolysin combined with either ColG or ColH (n = 3, respectively). RESULTS The expression of collagen III on rat hepatic tissues was dramatically lower than that of rat pancreatic tissues. In the rat hepatocyte isolation, a substantial amount of hepatocytes (0.81 ± 0.11 × 10(6)) were obtained in the ColG group, whereas almost no hepatocytes were retrieved in the ColH group, indicating that the influence of the collagenase subtypes in rat hepatocyte isolation are completely opposite to that observed in rat islet isolation. CONCLUSIONS Considering that the expression of collagen III on hepatic tissues was relatively low and that almost no hepatocytes were retrieved when ColH and thermolysin were used, the present study supports our novel finding that collagen III appears to be one of the key targets of ColH in hepatocyte isolation. Therefore, the semiquantification of collagen III on the target tissues not only may positively contribute to efficient islet isolation, but also may affect other types of cell isolation by optimizing the ColH amount.
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Affiliation(s)
- S Yoshida
- Division of Advanced Surgical Science and Technology, Graduate School of Medical Engineering, Tohoku University, Sendai, Japan
| | - Y Yamagata
- New Industry Creation Hatchery Center, Graduate School of Medical Engineering, Tohoku University, Sendai, Japan; Department of Applied Biological Chemistry, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - K Murayama
- Division of Biomedical Measurements and Diagnostics, Graduate School of Medical Engineering, Tohoku University, Sendai, Japan
| | - K Watanabe
- New Industry Creation Hatchery Center, Graduate School of Medical Engineering, Tohoku University, Sendai, Japan
| | - T Imura
- New Industry Creation Hatchery Center, Graduate School of Medical Engineering, Tohoku University, Sendai, Japan
| | - Y Igarashi
- New Industry Creation Hatchery Center, Graduate School of Medical Engineering, Tohoku University, Sendai, Japan
| | - A Inagaki
- New Industry Creation Hatchery Center, Graduate School of Medical Engineering, Tohoku University, Sendai, Japan
| | - K Fujimori
- Division of Advanced Surgical Science and Technology, Graduate School of Medical Engineering, Tohoku University, Sendai, Japan
| | - K Ohashi
- Department of Surgery, Nara Medical University, Kashihara, Japan
| | - N Ohuchi
- Division of Advanced Surgical Science and Technology, Graduate School of Medical Engineering, Tohoku University, Sendai, Japan
| | - S Satomi
- Division of Advanced Surgical Science and Technology, Graduate School of Medical Engineering, Tohoku University, Sendai, Japan
| | - M Goto
- Division of Advanced Surgical Science and Technology, Graduate School of Medical Engineering, Tohoku University, Sendai, Japan; New Industry Creation Hatchery Center, Graduate School of Medical Engineering, Tohoku University, Sendai, Japan.
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Nishimura R, Goto M, Sekiguchi S, Fujimori K, Ushiyama A, Satomi S. Assessment for revascularization of transplanted pancreatic islets at subcutaneous site in mice with a highly sensitive imaging system. Transplant Proc 2014; 43:3239-40. [PMID: 22099766 DOI: 10.1016/j.transproceed.2011.09.095] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND The subcutaneous space is one of the ideal sites for pancreatic islet transplantation, owing to the minimal invasiveness and easy access. However, the results of pancreatic islet transplantation in subcutaneous sites remain unsatisfactory. One of the main obstacles to successful pancreatic islet transplantation in subcutaneous sites is poor revascularization. Therefore, the aim of this study was to evaluate the revascularization process at subcutaneous sites with a highly sensitive imaging system combining a dorsal skinfold chamber (DSC) technique and multiphoton laser scanning microscopy (MPLSM). METHODS A few pancreatic islets isolated from C57BL/6-Tg (CAG-EGFP) mice were syngeneically transplanted into nonmetallic DSCs mounted on the backs of C57BL/6J mice. Time-dependent changes in the newly formed vessels of pancreatic islets were imaged using MPLSM on days 1, 4, 7, 11, and 14 (n = 6). Texas Red was injected intravenously to visualize blood vessels. To evaluate islet graft revascularization, we measured vascular volume surrounding the islet using the Volocity system (Improvision). RESULTS The percentages of vascular volume at days 1 and 14 were assumed to be 0 and 100%, respectively. The vascular volume on each day was 9.4 ± 6.5% (day 4), 34.9 ± 11.2% (day 7), and 21.1 ± 4.6% (day 11). CONCLUSIONS The present study showed that a highly sensitive imaging system combining the DSC technique and MPLSM was a useful tool to analyze the revascularization process of pancreatic islets in a subcutaneous site.
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Affiliation(s)
- R Nishimura
- Division of Advanced Surgical Science and Technology, Graduate School of Medicine, Tohoku University, Miyagi, Japan.
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Sato K, Sekiguchi S, Kawagishi N, Miyagi S, Fujimori K, Sato A, Satomi S. The optimal timing for preparation of recipient superficial femoral veins to minimize intraoperative blood loss in living donor liver transplantation. Transplant Proc 2013; 45:1934-6. [PMID: 23769077 DOI: 10.1016/j.transproceed.2012.11.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Revised: 10/15/2012] [Accepted: 11/20/2012] [Indexed: 11/25/2022]
Abstract
AIMS Intraoperative blood loss (IBL) usually predominates during the dissection of the native liver. A right-lobe living donor liver transplantation (LDLT) sometimes requires an additional procedure to obtain an autologous vein from the recipient for the vascular reconstruction. These procedure can sometime contribute to progressive coagulopathy causing unexpected bleeding. Therefore, we analyzed our cases to determine the optimal timing for vascular preparation from the patient in terms of IBL. METHODS Among 67 patients included in the study, 30 did not require an additional procedure to obtain the venous graft (group A), and 37 LDLT employed a superficial femoral vein (SFV). Of these, 13 had undergone removal of SFV after the hilar dissection and liver mobilization from retrohepatic area while preserving the inferior vena cava (group B), and 24 removal of the SFV immediately after hilar dissection without liver mobilization from the retrohepatic space (group C). RESULTS A significant difference existed only in the scores of the Model for End-stage Liver Disease. Although the median IBL for group C was similar to that for group A, the median IBL for group B was significantly higher than that for other 2 groups. The median duration from skin incision to graft implantation for group B was significantly longer than that for groups A and group C, because of the additional hemostatic procedures in the retrohepatic space including the leg site. CONCLUSIONS The timing for removal of SFV in LDLT patients affects IBL associated with consumptive coagulopathy and prolongs operative time. Based on our experience, we concluded that SFV preparation should be performed before liver mobilization from the retrohepatic area to minimize IBL.
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Affiliation(s)
- K Sato
- Advanced Surgical Science and Technology Division, Department of Surgery, Graduate School of Medicine, University of Tohoku, Sendai, Japan.
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Gopiraman M, Fujimori K, Zeeshan K, Kim BS, Kim IS. Structural and mechanical properties of cellulose acetate/graphene hybrid nanofibers: Spectroscopic investigations. EXPRESS POLYM LETT 2013. [DOI: 10.3144/expresspolymlett.2013.52] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Miyagi S, Kawagishi N, Sekiguchi S, Akamatsu Y, Sato K, Takeda I, Kobayashi Y, Tokodai K, Fujimori K, Satomi S. The relationship between recurrences and immunosuppression on living donor liver transplantation for hepatocellular carcinoma. Transplant Proc 2012; 44:797-801. [PMID: 22483499 DOI: 10.1016/j.transproceed.2012.01.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
OBJECTIVES Living donor liver transplantation (LDLT) offers timely transplantation for patients with hepatocellular carcinoma (HCC). If ABO-incompatible LDLT is feasible, the needs for pretransplantation treatments may be eliminated. It is known that negative impacts of immunosuppression are limited among LDLT for HCC, however, we believe that excessive immunosuppression is one of the risk factors for recurrence. We compared the impacts of immunosuppression for LDLT with hepatectomy outcomes for HCC. METHODS From 1991 to 2010, we performed 144 LDLTs including 14 patients with HCC. Seven met the Milan criteria. Immunosuppressive therapies were based on tacrolimus plus methylprednisolone plus CD25 antibody. For ABO-incompatible cases, we also used mycophenolate mofetil and rituximab. Five cases underwent strong imunosuppressive therapy (steroid pulse or rituximab) within 180 days. In addition, we performed hepatectomy for 180 HCC cases from 1997 to 2010. RESULTS Overall survival rates of the LDLT cohort and hepatectomy groups were similar, but disease-free 5-year survival rates (DFS) of the LDLT cohort were significantly better than those of the hepatectomy group (total = 54.4% versus 27.4%, within the Milan criteria cases, 71.4% versus 33.8%). Thus, the negative impact of immunosuppression on recurrence was less than the benefit of a whole liver resection. Among strongly immunosuppressed cases, 5-years DFS rates were significantly worse than among other immunosuppressed cases (20.0% versus 76.2%). Upon univariate analysis, the factors associated with HCC recurrence were alpha-fetoprotein levels and steroid doses within 180 days, but multivariate analysis did not show a predictor for recurrence. CONCLUSION Patients who are strongly immunosuppressed may have several negative impacts for recurrences. More careful indications must be selected for ABO-incompatible cases.
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Affiliation(s)
- S Miyagi
- Department of Transplantation, Reconstruction and Endoscopic Surgery, Tohoku University, Aoba-ku, Sendai, Japan.
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Watanabe T, Sugino T, Furukawa S, Soeda S, Nishiyama H, Fujimori K. Malignant mixed Müllerian tumor of the fallopian tube: a case report. EUR J GYNAECOL ONCOL 2012; 33:223-226. [PMID: 22611970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Malignant mixed Müllerian tumor (MMMT) of the female genital tract is uncommon and extremely rare in the Fallopian tube. We describe a case of primary MMMT of the Fallopian tube with carcinomatous and heterologous mesenchymal components in a 60-year-old woman. The patient underwent total abdominal hysterectomy, bilateral salpingo-oophorectomy, infracolic omentectomy, pelvic and paraaortic lymph node dissection, and resection of intrapelvic metastases. The tumor formed a large polypoid mass within the right Fallopian tube and had penetrated the wall to the paraovarian space. Microscopic examination revealed two components of poorly differentiated adenocarcinoma and high-grade sarcoma with chondromatous differentiation. The patient received six courses of adjuvant chemotherapy with ifomide and cisplatin and is currently in remission. Although MMMT in the Fallopian tube shows poor prognosis, primary cytoreductive surgery with platinum-based combination chemotherapy may improve survival.
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Affiliation(s)
- T Watanabe
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan.
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Miyagi S, Sekiguchi S, Kawagishi N, Akamatsu Y, Satoh K, Takeda I, Fujimori K, Satomi S. Nonmarginal-Donor Duodenal Ulcers Caused by Rejection After Simultaneous Pancreas and Kidney Transplantation: A Case Report. Transplant Proc 2011; 43:3292-5. [DOI: 10.1016/j.transproceed.2011.09.094] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Kishida M, Nishikawa A, Fujimori K, Shibutani Y. Gas-particle concentrations of atmospheric polycyclic aromatic hydrocarbons at an urban and a residential site in Osaka, Japan: effect of the formation of atmospherically stable layer on their temporal change. J Hazard Mater 2011; 192:1340-1349. [PMID: 21752537 DOI: 10.1016/j.jhazmat.2011.06.046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2010] [Revised: 04/13/2011] [Accepted: 06/17/2011] [Indexed: 05/31/2023]
Abstract
A comparative study on atmospheric polycyclic aromatic hydrocarbons (PAHs) in particulate matter and the gaseous phase was performed at an urban and a residential site in Osaka, Japan, during 2005-2006. PAH concentrations at the urban site were found to be approximately twice higher than those at the residential site. At both sites, particulate PAH concentrations increased mainly in winter while the trends of temporal change in gaseous PAH concentrations were not clearly observed. The main sources of PAHs were estimated to be local traffic, e.g., diesel engines with catalytic converter. PAH concentrations did not significantly negatively correlate with ozone concentrations and meteorological parameters. Gas-particle partitioning coefficients of representative PAHs with low molecular weight (LMW) significantly negatively correlated with ambient temperature, showing that temporal change in the LMW PAH concentrations in PM could be attributable to the shift of their gas-particle distribution caused by the change in ambient temperature. For the first time, we studied the effect of the formation of atmospherically stable layer following an increase in PAH concentrations in Japan. At the urban site, PAHs showed a significant positive correlation with potential temperature gradients, indicating that temporal variability in PAH concentrations would be dominantly controlled by the formation of atmospherically stable layer in Osaka area.
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Affiliation(s)
- Masao Kishida
- Research Institute of Environment, Agriculture, and Fisheries, Osaka Prefectural Government, 1-3-62 Nakamichi, Higashinari-ku, Osaka 537-0025, Japan.
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Yasumura S, Hashimoto K, Hoshoya M, Fujimori K, Wakagi Y. SP3-34 The overview and prospects of "Japan Eco & Child Study" in Fukushima. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976o.34] [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: 11/04/2022]
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Goto M, Imura T, Inagaki A, Ogawa N, Yamaya H, Fujimori K, Kurokawa Y, Satomi S. The impact of ischemic stress on the quality of isolated pancreatic islets. Transplant Proc 2011; 42:2040-2. [PMID: 20692402 DOI: 10.1016/j.transproceed.2010.05.101] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Although the ischemic stress of donated organs has been shown to have strong negative effects on islet recovery, the impact on islet quality remains uncertain. In the present study, therefore, we examined the influence of ischemic stress on the expression of inflammatory mediators among isolated islets. MATERIALS AND METHODS Islets were isolated from adult porcine pancreata subjected to 16-hour cold ischemia time (CIT) in addition to 40-minute warm ischemia time (WIT). We evaluated the islet yield, islet loss during the first 24 hours in culture, adenosine diphosphate (ADP)/adenosine triphosphate (ATP) ratio, ATP/DNA ratio, glucose-stimulated respiratory activity, in vivo bioassay, and the expression of inflammatory mediators (tissue factor [TF], [MCP-1], macrophage migration inhibitory factor) on the isolated islets. We also analyzed ATP/DNA ratios of the exocrine tissues during isolation procedures. RESULTS The islet yield, survival rate during culture, and glucose-stimulated respiratory activity were significantly lower in cases of 16-hour CIT plus 40-minute WIT compared with the control group (P < .0001, .0006, and .002, respectively). In contrast, ADP/ATP ratio as well as TF and MCP-1 expressions on the isolated islets were higher among the ischemic group (P = .005, .16, and .005, respectively). During isolation procedures, the ATP/DNA of the exocrine tissues was extremely lower in the ischemic compared to the control group (P < .0001). Notably, however, both ATP/DNA and ADP/ATP ratio of isolated islets were well preserved even in the ischemic group (P = .45 and .40). DISCUSSION These data suggest that ischemic stress during the preservation period negatively affects the energy status of exocrine tissues. Destruction of the exocrine tissues, in combination with warm ischemic stress during the isolation procedures, subsequently decreases isolated islet activity, inducing the expression of inflammatory mediators.
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Affiliation(s)
- M Goto
- Tohoku University International Advanced Research and Education Organization, Tohoku University, Sendai, Japan.
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Fukushima D, Doi H, Fukushima K, Katsura K, Ogawa N, Sekiguchi S, Fujimori K, Sato A, Satomi S, Ishida K, Fukushima K. Glutamate exocrine dynamics augmented by plasma glutamine and the distribution of amino acid transporters of the rat pancreas. J Physiol Pharmacol 2010; 61:265-271. [PMID: 20610855] [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] [Received: 10/06/2009] [Accepted: 05/25/2010] [Indexed: 05/29/2023]
Abstract
The nutritional and physiological roles of amino acid (AA)s have been investigated for individual organs. In the current study, we focused on the dynamics of glutamate and transport systems in the pancreas. We employed original procedures to obtain rat pancreatic juice (PJ) subjected to intravenous administration of alanyl-glutamine (AG) for AA analysis. The pancreatic expressions of the transporters were evaluated by immunohistochemistry. We found that glutamate was secreted into the PJ in the basal state. The intravenous administration of AG increased the concentration and total amount of glutamate excreted into the PJ. In terms of the transport systems, L-type AA transporter (LAT1) was identified exclusively in the islet cells. Glutamate transporter 1 (GLT1), glutamate-aspartate transporter (GLAST), vesicular glutamate transporter 1 (VGUT1) and cystine/glutamic acid transporter (xCT) were found in the islet cells. xCT was identified in the duct cells as well, but was not accompanied by the expression of 4F2 heavy chain (4F2hc) staining in the islets and the acinar cells, similar to neutral AA transporter (ASCT2) or b0,+-type AA transporter 1(BAT1). Excitatory AA transporter (EAAC) was identified only in the acinar cells. Glutamate was exclusively found in the acinar cells. We revealed the novel dynamics of glutamate in the rat PJ. The glutamate secretion into the PJ was augmented by plasma glutamine, indicating the de novo metabolisms of glutamate, together with the local expression of the related transporters.
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Affiliation(s)
- D Fukushima
- Advanced Surgical Science and Technology Division, Department of Surgery, Graduate School of Medicine, University of Tohoku, Sendai, Japan
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Kishida M, Mio C, Fujimori K, Imamura K, Takenaka N, Maeda Y, Lan TTN, Shibutani Y, Bandow H. Seasonal change in the atmospheric concentration of particulate polycyclic aromatic hydrocarbons in Ho Chi Minh City, Vietnam. Bull Environ Contam Toxicol 2009; 83:747-751. [PMID: 19471847 DOI: 10.1007/s00128-009-9779-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2008] [Accepted: 05/07/2009] [Indexed: 05/27/2023]
Abstract
We analyzed atmospheric particulate polycyclic aromatic hydrocarbons (PAHs) in Ho Chi Minh City, Vietnam, for 19 months. The average concentrations of total PAHs at dry and rainy seasons were 4.28 +/- 2.83 and 15.71 +/- 8.21 ng m(-3), respectively. The use of motorcycles without catalytic converters, estimated to be main emission sources of PAHs, would be higher during the dry season. PAH concentrations show a negative correlation with sunshine duration (r = -0.51). Furthermore, the ratio of average PAH concentration in the dry season to that in the rainy season shows a positive correlation with photolytic half-life (r = 0.94). Thus, seasonal changes in PAH concentrations are attributable to their photolytic degradation.
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Affiliation(s)
- Masao Kishida
- Research Institute for Environment, Agriculture, and Fisheries, Osaka Prefectural Government, Osaka 537-0025, Japan.
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Sato K, Sekiguchi S, Watanabe T, Enomoto Y, Akamastu Y, Kawagishi N, Miyagi S, Takeda I, Sato A, Fujimori K, Satomi S. The use of recipient superficial femoral vein as a venous graft for portal vein reconstruction in right lobe living donor liver transplantation. Transplant Proc 2009; 41:195-7. [PMID: 19249512 DOI: 10.1016/j.transproceed.2008.08.157] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2008] [Accepted: 08/14/2008] [Indexed: 10/21/2022]
Abstract
In living donor liver transplantation (LDLT), portal vein thrombosis (PVT) in the recipient is frequently regarded as a contraindication. To reconstruct the PV of a right-lobe liver graft (RLG) using an interposition or jump graft from the splenomesenteric junction, various vein grafts and technical modifications have been introduced. The internal jugular, external iliac, or great saphenous veins have been utilized in such reconstructive procedures. However, the superficial femoral vein (SFV) is preferable to the autologous vein grafts in terms of caliber, wall thickness, and length. We employed the recipient SFV to reconstruct PVT among 40 adult LDLT using RLG. Thirty-three were reconstructed by single end-to-end anastomosis with the right or left recipient PV. Three patients were transplanted with a RLG using 2 separated PVs reconstructed by double anastomoses with both the right and left PVs of the recipient. The remaining 4 patients required venous grafting for portal reconstruction. We used the recipient SFV as an interposition or jump graft from the splenomesenteric junction to the graft PV. There were 2 cases of anastomotic PV stenosis; 1 in portal reconstruction without a venous graft and the other with a SFV graft. Both were treated successfully by balloon angioplasty. The recipient SFV is an excellent size match for the PV reconstruction as a long interposition or jump conduit when the venous system from the deceased donor is not available. The indication for LDLT in patients with complete PVT should be carefully decided before transplantation in terms of portal reconstruction.
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Affiliation(s)
- K Sato
- Department of Advanced Surgical and Technology, Tohoku University School of Medicine, Sendai, Aobaku, Japan
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Saito Y, Goto M, Maya K, Ogawa N, Fujimori K, Kurokawa Y, Satomi S. The Influence of Brain Death on Tissue Factor Expression in the Pancreatic Tissues and Isolated Islets in Rats. Transplant Proc 2009; 41:307-10. [DOI: 10.1016/j.transproceed.2008.10.080] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2008] [Revised: 09/11/2008] [Accepted: 10/15/2008] [Indexed: 10/21/2022]
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Takahashi H, Goto M, Ogawa N, Saito Y, Fujimori K, Kurokawa Y, Doi H, Satomi S. Superiority of Fresh Islets Compared With Cultured Islets. Transplant Proc 2009; 41:350-1. [DOI: 10.1016/j.transproceed.2008.08.143] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2008] [Accepted: 08/06/2008] [Indexed: 10/21/2022]
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Sato K, Iwane T, Sekiguchi S, Nakamura A, Akamatsu Y, Kawagishi N, Miyagi S, Takeda I, Sato A, Fujimori K, Satomi S. Management of Living Donor Liver Transplant Patients Using Twice-Daily 4-Hour Intravenous Cyclosporine Therapy. Transplant Proc 2009; 41:229-32. [DOI: 10.1016/j.transproceed.2008.08.158] [Citation(s) in RCA: 3] [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] [Received: 07/09/2008] [Accepted: 08/14/2008] [Indexed: 11/26/2022]
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Tokodai K, Goto M, Imura T, Ogawa N, Fujimori K, Kurokawa Y, Okada H, Satomi S. C5a Inhibitory Peptide Combined With Gabexate Mesilate Is a Clinically Available Candidate for Preventing the Instant Blood-Mediated Inflammatory Reaction. Transplant Proc 2009; 41:67-8. [DOI: 10.1016/j.transproceed.2008.10.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2008] [Accepted: 10/29/2008] [Indexed: 11/16/2022]
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Fujimori K, Tanimoto A, Takada K, Misaki Y, Kimura S, Moriuchi-Kawakami T, Shibutani Y. Chemiluminescent Emitter Based on the Reactions by Ce(IV). ANAL LETT 2008. [DOI: 10.1080/00032710802440608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Miyagi S, Okada A, Oikawa K, Sato A, Fujimori K, Satomi S. Effects of serine protease inhibitor and prostaglandin I2 on liver transplantation from non-heart-beating rat donors. Transplant Proc 2008; 40:2152-5. [PMID: 18790178 DOI: 10.1016/j.transproceed.2008.06.010] [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: 11/17/2022]
Abstract
OBJECTIVES We sought to preserve the microcirculation as a keystone in liver transplantation from a non-heart-beating donor (NHBD). The purpose of this study was to investigate the cytoprotective effects of a serine protease inhibitor, nafamostat mesilate, and prostaglandin I2 (PGI2) on livers transplanted from NHBDs. METHODS Male Wistar rats were used in five groups of nine rats each. In group 1, livers were retrieved from heart-beating donors (HB group); in group 2, livers were retrieved from NHBDs that had experienced agonal apnea (NHB group); in group 3, livers were retrieved in the same manner as in the NHBD group but were pretreated with nafamostat mesilate (NM), 0.2 mg/kg/h, (NM group); in group 4, livers were retrieved in the same manner as in the NHBD group but were pretreated with prostaglandin (PG) I2, 33 ng/kg/h for 30 minutes (PG group); and in group 5, livers were retrieved in the same manner as in the NHBD group but were pretreated with NM plus PG, (NM+PG group). Livers were perfused for 60 minutes with Krebs-Henseleit bicarbonate buffer after 6 hours of cold preservation, after which the perfusate and liver tissue were analyzed in one set of experiments. In another set of experiments, livers retrieved and after 1 hour of cold preservation were transplanted according to the Kamada method. RESULTS In the NM+PG group, the values of interleukin-1beta, tumor necrosis factor-alpha, and thromboxane B2 were significantly lower than those in the NHB group. At histologic analysis, sinusoidal endothelial cells were well preserved in the NM+PG group. The number of survivors at 7 days after liver transplantation in the 5 groups were 9, 0, 1, 1, and 3, respectively. CONCLUSION The serine protease inhibitor, NM, and PGI2 supported sinusoidal endothelial cells and preserved microcirculation.
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Affiliation(s)
- S Miyagi
- Division of Advanced Surgical Science and Technology, Tohoku University Graduate School of Medicine, Sendai, Japan.
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Miyagi S, Sekiguchi S, Kawagishi N, Akamatsu Y, Sato A, Fujimori K, Satomi S. Parkinsonism During Cyclosporine Treatment in Liver Transplantation: An Unusual Case Report. Transplant Proc 2008; 40:2823-4. [DOI: 10.1016/j.transproceed.2008.07.053] [Citation(s) in RCA: 7] [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: 11/29/2022]
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Miyagi S, Enomoto Y, Sekiguchi S, Kawagishi N, Sato A, Fujimori K, Satomi S. Microsurgical Back Wall Support Suture Technique With Double Needle Sutures on Hepatic Artery Reconstruction in Living Donor Liver Transplantation. Transplant Proc 2008; 40:2521-2. [DOI: 10.1016/j.transproceed.2008.07.033] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Goto M, Yoshikawa Y, Matsuo K, Shirasu A, Ogawa N, Takahashi H, Saitoh Y, Goto M, Fujimori K, Kurokawa Y, Tamai M, Satomi S. Optimization of a prominent oxygen-permeable device for pancreatic islets. Transplant Proc 2008; 40:411-2. [PMID: 18374084 DOI: 10.1016/j.transproceed.2008.01.056] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND We have demonstrated a culture bag system that is useful for pancreatic islet transplantation. To improve and simplify islet transplantation procedures from culture to transplantation, we developed a novel device specific for both islet culture and transplantation (TUBERO Device [TD]) using an oxygen-permeable material. MATERIALS AND METHODS Porcine islets with 30 minutes warm ischemia time were cultured for 24 hours at 37 degrees C in 5% CO2 and humidified air under three different procedures: (1) ordinary culture flask, (2) culture bag suitable for platelets, and (3) TD. Loss of islets during culture, glucose-stimulated insulin release as an islet functional test, and ADP/ATP ratio as an index of islet viability tests were evaluated to compare the devices. TD was further applied in two clinical islet transplantations using non-heart-beating donors in Japan. RESULTS The loss of islets during culture was considerably lower in the TD group. The stimulation index upon glucose challenge tests was significantly higher in the TD group than the others. The ADP/ATP ratio in TD group was significantly lower than that in the ordinary flask group, suggesting that the apoptotic islets were relatively lower among TD. Most importantly, TD was successfully applied both in the clinical islet cultures and in transplantation, resulting in excellent graft function. CONCLUSIONS We propose that the TD, a novel product, not only simplifies islet transplantation procedures, but also maintain the quality of isolated islets.
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Affiliation(s)
- M Goto
- Tohoku University Biomedical Engineering Research Organization, Tohoku University, Sendai, Japan; Division of Advanced Surgical Science and Technology, Tohoku University, Sendai, Japan.
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Bonotto DM, Fujimori K, Moreira-Nordemann LM. Determination of weathering rate of the Morro do Ferro Th-REEs deposit, Brazil using U-isotope method. Appl Radiat Isot 2007; 65:474-81. [PMID: 17270451 DOI: 10.1016/j.apradiso.2006.11.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2006] [Revised: 11/07/2006] [Accepted: 11/19/2006] [Indexed: 11/23/2022]
Abstract
The weathering rate was estimated by changes in (234)U/(238)U activity ratio (AR) and U content of rocks, borehole spoil and surface water samples at the Morro do Ferro Th-REEs deposit. The deposit is situated in the Poços de Caldas alkaline massif, Brazil. The south stream basin investigated in this paper has not been significantly affected by anthropogenic inputs of pollutants as compared to the Corumbataí River basin in São Paulo State, where the method was previously applied. The weathering rate derived utilizing the U-isotopes modeling corresponded to 0.015 mm/yr (67,000 years to weather 1m of rock under the actual climatic conditions). The estimated rate is very reasonable in comparison with the range of 0.015-0.05 mm/yr of land surface lowering within the entire caldera. It is also compatible with a rate of 0.013 mm/yr determined for the Salgado River basin in a semi-arid region in Bahia State, Brazil. The value generated is reliable and increases the potential use of the method for other different areas in Brazil and elsewhere, because it may be used in regions with different climatic conditions and (un)polluted basins.
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Affiliation(s)
- D M Bonotto
- Departamento de Petrologia e Metalogenia, Universidade Estadual Paulista (UNESP), Câmpus de Rio Claro, Avnue 24-A No.1515, C.P. 178, CEP 13506-900, Rio Claro, São Paulo, Brazil.
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Sato K, Sekiguchi S, Kawagishi N, Akamatsu Y, Enomoto Y, Takeda I, Fukushima D, Fujimori K, Sato A, Satomi S. Continuous low-dose human atrial natriuretic peptide promotes diuresis in oliguric patients after living donor liver transplantation. Transplant Proc 2007; 38:3591-3. [PMID: 17175340 DOI: 10.1016/j.transproceed.2006.10.130] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2006] [Indexed: 11/23/2022]
Abstract
Human atrial natriuretic peptide (ANP) is beneficial for the prophylaxis of acute renal failure (ARF) after liver transplantation (OLT). We evaluated renal function in OLT patients with or without ARF, describing cases unresponsive to loop diuretics successfully treated with continuous low-dose ANP infusion without hemodialysis. Twenty-seven consecutive adult-to-adult living donor liver transplantations (LDLTs) were performed in 26 patients. One case was excluded due to the need for continuous hemodialysis (HD) during the operation. Of the 26 cases, 6 (23%, group 2) developed ARF in the first 30 days after LDLT; the other 20 were ARF-free (group 1). The median follow-up was 24 months. No patient required either continuous or intermittent HD. Only one patient died due to multiple liver abscesses. Mean preoperative serum creatinine (sCr) value and intraoperative blood loss in group 2 were significantly higher than those in group 1. Three cases in group 2 failed to improve on high-dose loop diuretics with low-dose dopamine, exhibiting fluid overload. The remaining three cases in group 2 responded to conventional diuretic treatments. Continuous low-dose ANP was started 2, 4, or 5 days after LDLT, and urine output significantly increased after ANP administration. The serum creatinine values were 1.1, 1.2, and 1.1 at 1 month and 1.0, 0.9, and 0.6 mg/dL at 6 months after LDLT. Massive blood loss during the operation caused ARF, but did not affect renal function after LDLT. Continuous low-dose ANP improved renal function and diuresis for oliguric ARF patients, preventing the need for HD or continuous venovenous hemodialysis.
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Affiliation(s)
- K Sato
- Advanced Surgical Science and Technology Division, Department of Surgery, Graduate School of Medicine, University of Tohoku, Sendai, Japan.
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Fujimori K, Dyson RM. Reactivity of Uncyclized Diene Radical in the Cyclocopolymerization of Diallyl Ether with Maleic Anhydride. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/00222338308060569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Moriuchi-Kawakami T, Yokou T, Tsujioka H, Aoki R, Fujimori K, Shibutani Y. Structural investigation on ion-selective ionophoric properties of armed 12-oxacrown-3 derivatives. Anal Chim Acta 2006. [DOI: 10.1016/j.aca.2005.12.071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Sato K, Sekiguchi S, Fukumori T, Kawagishi N, Akamastu Y, Enomoto Y, Iwane T, Fujimori K, Sato A, Satomi S. Experience With Recipient’s Superficial Femoral Vein as Conduit for Middle Hepatic Vein Reconstruction in a Right-Lobe Living Donor Liver Transplant Procedure. Transplant Proc 2005; 37:4343-6. [PMID: 16387116 DOI: 10.1016/j.transproceed.2005.11.039] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Middle hepatic vein reconstruction during the right-lobe living donor liver transplant procedure has been recognized to be a significant factor. We initially reconstructed only a single middle hepatic vein orifice draining into segment 8. In cases where the right-lobe liver graft has several major middle hepatic vein tributaries, including veins draining segment 5 that are remote from the right hepatic vein orifice, a long and thick interposition conduit is necessary for reconstruction. Among 11 consecutive adult patients who received a right-lobe liver graft without a middle hepatic vein at our institution, 8 underwent reconstruction of all major middle hepatic vein tributaries using a vein graft from the recipient's superficial femoral vein. The remaining 3 patients had no major middle hepatic vein tributaries. Posttransplant-computed tomography imagings showed increased liver mass with a patent superficial femoral vein graft in 8 patients. In the absence of a venous system from a deceased donor, a recipient superficial femoral vein offers an excellent size match to maintain the venous outflow of middle hepatic vein tributaries. Reconstruction with recipient superficial femoral vein plays an important role in maximizing liver function and minimizing morbidity in the early posttransplant period.
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Affiliation(s)
- K Sato
- Department of Surgery, Graduate School of Medicine, University of Tohoku, Sendai, Japan.
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Koyamada N, Sato A, Takayama J, Usuda M, Kawagishi N, Doi H, Fujimori K, Satomi S. Macrophage depletion prevents anti-graft antibody production and results in long-term survival in xenotransplantation. Transplant Proc 2005; 37:514-5. [PMID: 15808694 DOI: 10.1016/j.transproceed.2005.01.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Liposome-encapsulated dichloromethylene diphosphonate (clodronate) is known to deplete macrophages. We examined the effect of clodronate on xenoreactive antibody production and xenograft rejection. Hamster cardiac grafts were transplanted into Lewis rats. Clodronate (4 mL/kg) was injected intravenously on the day before transplantation. In some groups, cyclosporine A (CsA) at a dose of 15 mg/kg was given daily intramuscularly until the end of each experiment. Untreated Lewis rats rejected the grafts at 2 and 3 days after transplantation. Neither CsA treatment alone nor clodronate treatment alone prolonged graft survival. Five of 7 Lewis recipients treated with clodronate and CsA did not reject hamster hearts for 100 days. Antibody production in the CsA plus clodronate-treated group was suppressed compared with control groups.
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Affiliation(s)
- N Koyamada
- Division of Advanced Surgical Science and Technology, Graduate School of Medicine, Tohoku University, Sendai City, Japan.
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Kawagishi N, Satoh K, Enomoto Y, Akamatsu Y, Sekiguchi S, Fukumori T, Fujimori K, Satomi S. New strategy for ABO-incompatible living donor liver transplantation with anti-CD20 antibody (rituximab) and plasma exchange. Transplant Proc 2005; 37:1205-6. [PMID: 15848670 DOI: 10.1016/j.transproceed.2004.12.114] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
It is more difficult to control humoral rejection in living donor liver transplantations (LDLT) across the ABO blood group barrier than in matched or compatible combinations. We achieved excellent results in ABO-incompatible transplantation with novel immunosuppressive regimens and plasma exchange (PE). Among 82 LDLT were 10 cases of ABO-incompatible recipients, including three who were administered rituximab for rescue or prophylactic therapy. Pretransplantation PE was performed as necessary to maintain hemagglutinin titers below 1:16 and posttransplantation PE was performed when there were signs of hyperacute rejection associated with high titers. Induction immunosuppression consisted of FK506, steroid, mycophenolate mofetil (MMF), and rituximab. The first patient was administered rituximab with deoxyspergualin (DSG), steroid pulse therapy, and PE on postoperative day (POD) 7, because of biopsy-proven humoral acute rejection. The titers and LFTs improved drastically. The second and third patients were administered rituximab just after the operation with other routine immunosuppressants for prophylaxis of hyperacute rejection. The second patient showed a slight deterioration in LFTs with an elevated titer, which normalized after steroid pulse therapy and PE. The third patient had no episodes of rejection. At present, that is 27, 17, and 6 months after the operations respectively, the 3 transplant recipients are in stable condition.
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Affiliation(s)
- N Kawagishi
- Division of Advanced Surgical Science and Technology, Graduate School of Medicine, Tohoku University, Sendai, Japan.
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Nakashima S, Arai S, Mizuno Y, Yoshino K, Ando S, Nakamura Y, Sugawara K, Koike M, Saito E, Naito M, Nakao M, Ito H, Hamaoka K, Rai F, Asakura Y, Akamatu M, Fujimori K, Inao M, Imai Y, Ota S, Fujiwara K, Shiibashi M. A clinical study of Japanese patients with ulcer induced by low-dose aspirin and other non-steroidal anti-inflammatory drugs. Aliment Pharmacol Ther 2005; 21 Suppl 2:60-6. [PMID: 15943849 DOI: 10.1111/j.1365-2036.2005.02476.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND The incidence and severity of non-steroidal anti-inflammatory drugs (NSAIDs)-induced gastro-duodenal ulcer have not been extensively studied in Japan. AIM We performed a prospective study to clarify NSAIDs-induced gastro-duodenal injury, focusing especially on low-dose aspirin (L-A). METHODS Two hundred and thirty-eight patients with bleeding peptic ulcers admitted to our hospital. History of taking NSAIDs and anti-ulcer drugs was obtained from all patients who underwent endoscopic examinations. The lesion scores of patients taking L-A were classified numerically from zero (no lesion) to five (ulcer). RESULTS The NSAIDs were associated with 28.2% of hemorrhagic ulcers. The rates of patients using L-A, loxoprofen, diclofenac, and combination of two of these drugs were 27, 16, 10 and 9%, respectively. Co-administered anti-ulcer drugs were cytoprotective anti-ulcer drugs (27%), H2 receptor antagonists (16%), PPI (4%), and none (53%). In patients taking L-A, H2 receptor antagonists were used most frequently. The HP was positive in 63% of L-A-induced ulcer cases and in 69% of NSAIDs other than low-dose aspirin-induced ulcer cases. The lesion scores of patients taking L-A with H2 receptor antagonists or PPI were significantly lower than those of patients who were taking only L-A (P < 0.05). CONCLUSIONS Approximately one-third of hospitalized patients with NSAIDs-induced hemorrhagic ulcer showed an association with L-A. Prospective randomized controlled trials including H2 receptor antagonists are required to establish preventive efforts aimed at L-A-induced gastro-duodenal injury.
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Affiliation(s)
- S Nakashima
- Department of Gastroenterology & Hepatology, Saitama Medical School, Iruma-gun, Saitama, Japan.
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