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Watanabe T, Kotani J, Murata Y, Seguchi O, Yanase M, Nakatani T. Tissue Characterization of Progressive Cardiac Allograft Vasculopathy in Patients With Everolimus Therapy Compared With Donor-Transmitted Atherosclerosis Assessed Using Serial Intravascular Imaging: A Case Report. Transplant Proc 2014; 46:2456-61. [DOI: 10.1016/j.transproceed.2014.03.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 03/31/2014] [Indexed: 10/24/2022]
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Iwata H, Mizuno S, Ishikawa E, Tanemura A, Murata Y, Kuriyama N, Azumi Y, Kishiwada M, Usui M, Sakurai H, Tabata M, Yamamoto N, Sugimoto K, Shiraki K, Takei Y, Ito M, Isaji S. Negative Prognostic Impact of Renal Replacement Therapy in Adult Living-donor Liver Transplant Recipients: Preoperative Recipient Condition and Donor Factors. Transplant Proc 2014; 46:716-20. [DOI: 10.1016/j.transproceed.2013.11.113] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Accepted: 11/15/2013] [Indexed: 02/07/2023]
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Hieda M, Sata M, Seguchi O, Yanase M, Murata Y, Sato T, Sunami H, Nakajima S, Watanabe T, Hori Y, Wada K, Hata H, Fujita T, Kobayashi J, Nakatani T. Importance of Early Appropriate Intervention Including Antibiotics and Wound Care for Device-Related Infection in Patients With Left Ventricular Assist Device. Transplant Proc 2014; 46:907-10. [DOI: 10.1016/j.transproceed.2013.11.106] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Accepted: 11/15/2013] [Indexed: 11/16/2022]
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Sato T, Yanase M, Sunami H, Murata Y, Seguchi O, Ogo K, Matsuyama T, Ikeda Y, Hata H, Fujita T, Ishibashi-Ueda H, Nakatani T. Correlation of Circulating Donor-Specific Anti-HLA Antibodies and Biopsy-Diagnosed Antibody-Mediated Rejection in Endomyocardial Biopsy With Cardiac Allograft Vasculopathy. J Heart Lung Transplant 2014. [DOI: 10.1016/j.healun.2014.01.755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Takaoka EI, Miyazaki J, Kimura T, Kojima T, Kawai K, Murata Y, Itoguchi N, Minami Y, Nakamura T, Honda K, Nishiyama H. Concurrent Urothelial Carcinoma in the Renal Pelvis of an Allograft Kidney and Native Recipient Bladder: Evidence of Donor Origin. Jpn J Clin Oncol 2014; 44:366-9. [DOI: 10.1093/jjco/hyu015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
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Miyabe Y, Murata Y, Baba Y, Ito E, Nagasaka K. Successful treatment of cyclosporine-A-resistant cytophagic histiocytic panniculitis with tacrolimus. Mod Rheumatol 2014. [DOI: 10.3109/s10165-011-0435-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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57
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Tsuji T, Ishiguro Y, Nakui Y, Murata Y, Munakata A, Onozuka N, Fukui K, Suzuki S, Yamagishi S. A case of dissecting aortic aneurysm with cystic medial necrosis in systemic lupus erythematosus. Mod Rheumatol 2014; 11:238-41. [DOI: 10.3109/s101650170011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Nakashima M, Hirose T, Ohki Y, Murata Y, Sugiyama T, Ishida H, Okuda K, Yamaoka T, Ohmori T, Ohnishi T. Clinical Benefit of 2ND EGFR-TKI Retreatment on Overall Survival in Patients with Advanced Non-Small Cell Lung Cancer. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt459.56] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Fujita T, Hata H, Seguchi O, Yanase M, Murata Y, Shimahara Y, Sato S, Nakatani T, Kobayashi J. 333 * BENEFIT OF CONCOMITANT TRICUSPID VALVE REPAIR IN PATIENTS UNDERGOING LEFT VENTRICULAR ASSIST DEVICE IMPLANTATION. Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivt372.333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Rõõm T, Peedu L, Ge M, Hüvonen D, Nagel U, Ye S, Xu M, Bačić Z, Mamone S, Levitt MH, Carravetta M, Chen JYC, Lei X, Turro NJ, Murata Y, Komatsu K. Infrared spectroscopy of small-molecule endofullerenes. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2013; 371:20110631. [PMID: 23918713 DOI: 10.1098/rsta.2011.0631] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Hydrogen is one of the few molecules that has been incarcerated in the molecular cage of C₆₀ to form the endohedral supramolecular complex H₂@C₆₀. In this confinement, hydrogen acquires new properties. Its translation motion, within the C₆₀ cavity, becomes quantized, is correlated with its rotation and breaks inversion symmetry that induces infrared (IR) activity of H₂. We apply IR spectroscopy to study the dynamics of hydrogen isotopologues H₂, D₂ and HD incarcerated in C₆₀. The translation and rotation modes appear as side bands to the hydrogen vibration mode in the mid-IR part of the absorption spectrum. Because of the large mass difference of hydrogen and C₆₀ and the high symmetry of C₆₀ the problem is almost identical to a vibrating rotor moving in a three-dimensional spherical potential. We derive potential, rotation, vibration and dipole moment parameters from the analysis of the IR absorption spectra. Our results were used to derive the parameters of a pairwise additive five-dimensional potential energy surface for H₂@C₆₀. The same parameters were used to predict H₂ energies inside C₇₀. We compare the predicted energies and the low-temperature IR absorption spectra of H₂@C₇₀.
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Horsewill AJ, Goh K, Rols S, Ollivier J, Johnson MR, Levitt MH, Carravetta M, Mamone S, Murata Y, Chen JYC, Johnson JA, Lei X, Turro NJ. Quantum rotation and translation of hydrogen molecules encapsulated inside C₆₀: temperature dependence of inelastic neutron scattering spectra. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2013; 371:20110627. [PMID: 23918709 DOI: 10.1098/rsta.2011.0627] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The quantum dynamics of a hydrogen molecule encapsulated inside the cage of a C60 fullerene molecule is investigated using inelastic neutron scattering (INS). The emphasis is on the temperature dependence of the INS spectra which were recorded using time-of-flight spectrometers. The hydrogen endofullerene system is highly quantum mechanical, exhibiting both translational and rotational quantization. The profound influence of the Pauli exclusion principle is revealed through nuclear spin isomerism. INS is shown to be exceptionally able to drive transitions between ortho-hydrogen and para-hydrogen which are spin-forbidden to photon spectroscopies. Spectra in the temperature range 1.6≤T≤280 K are presented, and examples are given which demonstrate how the temperature dependence of the INS peak amplitudes can provide an effective tool for assigning the transitions. It is also shown in a preliminary investigation how the temperature dependence may conceivably be used to probe crystal field effects and inter-fullerene interactions.
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Watanabe T, Murata Y, Hieda M, Sunami H, Nishimura K, Miyamoto Y, Sato T, Seguchi O, Yanase M, Nakatani T. Effects of everolimus conversion from mycophenolate mofetil on cardiac allograft vasculopathy in heart transplant recipients. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Seguchi O, Nakano A, Hieda M, Watanabe T, Sato T, Sunami H, Murata Y, Yanase M, Kitakaze M, Nakatani T. Noninvasive and mainstream end-tidal carbon dioxide monitoring via nasal cannula is a unique and useful technique for diagnosing pulmonary hypertension in patients with heart failure. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Hieda M, Murata Y, Yanase M, Seguchi O, Sato T, Sunami H, Watanabe T, Shishido T, Nakatani T. Acute effects of adaptive servo-ventilation on hemodynamics in advanced chronic heart failure patients. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p630] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kaneko T, Saito Y, Kotani T, Ohnishi H, Murata Y, Yonemoto Y, Okamura K, Matozaki T, Takagishi K. OP0059 Importance of the protein tyrosine phosphatase SHP1 in dendritic cells for prevention of TH1 cell differentiation and autoimmunity: A potential target for the therapy. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Salam MA, Jammes F, Hossain MA, Ye W, Nakamura Y, Mori IC, Kwak JM, Murata Y. Two guard cell-preferential MAPKs, MPK9 and MPK12, regulate YEL signalling in Arabidopsis guard cells. PLANT BIOLOGY (STUTTGART, GERMANY) 2013; 15:436-42. [PMID: 23043299 DOI: 10.1111/j.1438-8677.2012.00671.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
We report that two mitogen-activated protein kinases (MAPKs), MPK9 and MPK12, positively regulate abscisic acid (ABA)-induced stomatal closure in Arabidopsis thaliana. Yeast elicitor (YEL) induced stomatal closure accompanied by intracellular reactive oxygen species (ROS) accumulation and cytosolic free calcium concentration ([Ca(2+) ]cyt ) oscillation. In this study, we examined whether these two MAP kinases are involved in YEL-induced stomatal closure using MAPKK inhibitors, PD98059 and U0126, and MAPK mutants, mpk9, mpk12 and mpk9 mpk12. Both PD98059 and U0126 inhibited YEL-induced stomatal closure. YEL induced stomatal closure in the mpk9 and mpk12 mutants but not in the mpk9 mpk12 mutant, suggesting that a MAPK cascade involving MPK9 and MPK12 functions in guard cell YEL signalling. However, YEL induced extracellular ROS production, intracellular ROS accumulation and cytosolic alkalisation in the mpk9, mpk12 and mpk9 mpk12 mutants. YEL induced [Ca(2+) ]cyt oscillations in both wild type and mpk9 mpk12 mutant. These results suggest that MPK9 and MPK12 function redundantly downstream of extracellular ROS production, intracellular ROS accumulation, cytosolic alkalisation and [Ca(2+) ]cyt oscillation in YEL-induced stomatal closure in Arabidopsis guard cells and are shared with ABA signalling.
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Yamada T, Murata Y, Yokoi H. Visualization Analysis of a Multilayer Foam Development Process in Microcellular Injection Molding. INT POLYM PROC 2013. [DOI: 10.3139/217.2443] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
In this study, cross-sectional analyses were performed on microcellular injection-molded high-impact polystyrene products. The results confirm that the following five types of layers were formed: Skin layers I (the silver streak layer) and II (a nonfoamed layer), Core layers I (cell diameter, d > 150 μm), II (d < 50 μm), and III (d > 100 μm). As the maximum in-mold pressure (Pmax) was increased from 5 to 30 MPa, the thickness of Skin layer II remained nearly constant. However, the foam types in the core layers changed from I and II to II and III or III only, resulting in an increase in cell diameter and a decrease in cell density. The process of cellular structure formation was observed using a glass-inserted mold, which revealed that this process consists of a flow (with a burst of cells at the melt front and the subsequent flow of the melt containing the cells), an end of the filling (involving elastic compression or the dissolution and disappearance of cells formed in the flow stage), and a cooling (new cell generation and growth and cooling solidification). Based on these cross-sectional observations, in concert with melt-pressure measurements and visualizations, we developed a model describing the formation process of Skin layer II and the core layers including a new concept that considers the melt pressure inside the cavity. The following layers are incorporated into the model: Skin layer II: A nonfoamed layer is formed in the area of the melt front where gases diffuse out from within the melt during the filling stage, and this nonfoamed layer moves to from melt front to the surface of the product due to fountain flow. Core layers I and II: A multilayer is formed containing a distribution of cells preserved from the flow stage due to the low compression forces, Core layer III: cells are dissolved in the melt due to strong compression forces at the end of the filling stage and then reform and grow in the cooling stage.
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Hata H, Fujita T, Shimahara Y, Sato S, Yanase M, Seguchi O, Murata Y, Ishibashi-Ueda H, Nakatani T, Kobayashi J. Pathological Analysis of the Aortic Valve after Long-Term Mechanical Circulatory Support. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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69
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Harashima SI, Tanaka D, Yamane S, Ogura M, Fujita Y, Murata Y, Seike M, Koizumi T, Aono M, Wang Y, Inagaki N. Efficacy and safety of switching from basal insulin to sitagliptin in Japanese type 2 diabetes patients. Horm Metab Res 2013; 45:231-8. [PMID: 22972180 DOI: 10.1055/s-0032-1323763] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Basal-supported oral therapy (BOT) is often used to treat poorly controlled type 2 diabetes. However, patients sometimes experience nocturnal and early morning hypoglycemia. Thus, maintaining targeted glycemic control by BOT is limited in some patients. We assessed the efficacy and safety of replacing basal insulin by sitagliptin therapy in Japanese type 2 diabetes patients on BOT. Forty-nine subjects were sequentially recruited for the 52-week, prospective, single arm study. Patients on BOT therapy were switched from basal insulin to sitagliptin. The primary endpoint was change in HbA1c in 52 weeks. The secondary endpoints were dropout rate, changes in body weight, frequency of hypoglycemia, and relationship between change in HbA1c and insulin secretion capacity evaluated by glucagon loading test. The average dose of basal insulin was 15.0±8.4 units. Sixteen subjects (31.3%) were dropped because replacement by sitagliptin was less effective for glycemic control. In these subjects, diabetes duration was longer, FPG and HbA1c at baseline were higher, and insulin secretion capacity was lower. Change in HbA1c in 52 weeks was - 4 mmol/mol (95% CI - 5 to - 4 mmol/mol) (p<0.05). Change in body weight was - 0.71 kg (95% CI - 1.42 to - 0.004 kg) (p<0.05). Frequency of hypoglycemia was decreased from 1.21±1.05 to 0.06±0.24 times/month. HbA1c level was improved if C-peptide index (CPI) was over 1.19. In conclusion, basal insulin in BOT can be replaced by sitagliptin with a decrease in HbA1c level and frequency of hypoglycemia in cases where insulin secretion capacity was sufficiently preserved.
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Wang YJ, Okutani F, Murata Y, Taniguchi M, Namba T, Kaba H. Histone acetylation in the olfactory bulb of young rats facilitates aversive olfactory learning and synaptic plasticity. Neuroscience 2013; 232:21-31. [DOI: 10.1016/j.neuroscience.2012.12.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Revised: 12/04/2012] [Accepted: 12/05/2012] [Indexed: 01/10/2023]
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Murata Y, Wada M, Kawashima A, Kagawa K. Early diagnosis of Lemierre's syndrome based on a medical history and physical findings. Intern Med 2013; 52:285-8. [PMID: 23318865 DOI: 10.2169/internalmedicine.52.7856] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
A 37-year-old woman presented with fever and rigor after experiencing respiratory symptoms the previous week that had resolved within a few days. On presentation, her neck was swollen along the right sternocleidomastoid muscle, and chest CT showed pulmonary septic embolisms. Lemierre's syndrome was strongly suspected based on the patient's medical history and physical findings. Further examination revealed venous thrombus, and Fusobacterium necrophorum was later isolated from blood cultures. Antibiotics for anaerobes were administered before a final diagnosis was made, and the patient's symptoms thereafter improved. A rapid diagnosis is essential, since Lemierre's syndrome can be fatal with a diagnostic delay.
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Ohsawa I, Usui M, Mizuno S, Murata Y, Kuriyama N, Kishiwada M, Hamada T, Sakurai H, Tabata M, Isaji S. Rescue Therapy with Infliximab for Steroid Resistant Refractory Acute Rejection in Liver Transplant Patients: A Report of Two Cases. Transplantation 2012. [DOI: 10.1097/00007890-201211271-01470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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73
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Mokuda S, Sawada N, Matoba K, Yamada A, Onishi M, Okuda Y, Jouyama K, Murata Y, Takasugi K. Serum undercarboxylated osteocalcin level increases with 48 weeks of teriparatide treatment in pre-treated elderly rheumatoid arthritis patients who use anti-resorptive drugs. J Endocrinol Invest 2012; 35:796-9. [PMID: 23135318 DOI: 10.1007/bf03347100] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
AIM The serum undercarboxylated osteocalcin (ucOC) level, a biochemical bone marker of vitamin K insufficiency, is often affected by anti-osteoporosis drugs. There have been no reports regarding the relationship between ucOC and teriparatide. SUBJECTS AND METHODS We conducted a prospective observational study of 26 female rheumatoid arthritis (RA) patients. The patients were divided into 3 groups: those who underwent a direct switch from anti-resorptive drugs to teriparatide (12 cases), those who started teriparatide without pre-treatment (5 cases), and the control patients (9 cases). The median age (interquartile range) of the patients in each group was 75 (67-77), 82 (78-84), and 69 (62-80) yr, respectively. All patients, except controls, received 48-week treatments of teriparatide. We analyzed the median 48-week changes from baseline of the serum ucOC levels with the Steel-Dwass method. RESULTS The median change from baseline in the direct switch group was higher than that in other groups (p<0.05). CONCLUSIONS The serum ucOC levels increased with treatment of teriparatide in elderly RA patients, especially when the patients received pre-treatment.
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Hoque TS, Uraji M, Tuya A, Nakamura Y, Murata Y. Methylglyoxal inhibits seed germination and root elongation and up-regulates transcription of stress-responsive genes in ABA-dependent pathway in Arabidopsis. PLANT BIOLOGY (STUTTGART, GERMANY) 2012; 14:854-8. [PMID: 22676051 DOI: 10.1111/j.1438-8677.2012.00607.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Methylglyoxal (MG) is a highly reactive metabolite derived from glycolysis. In this study, we examined the effect of MG on seed germination, root elongation, chlorosis and stress-responsive gene expression in Arabidopsis using an abscisic acid (ABA)-deficient mutant, aba2-2. In the wild type, 0.1 mm MG did not affect germination but delayed root elongation, whereas 1.0 mm MG inhibited germination and root elongation and induced chlorosis. MG increased transcription levels of RD29B and RAB18 in a dose-dependent manner but did not affect RD29A transcription level. In contrast, in the aba2-2 mutant, MG inhibition of seed germination at 1.0 mm and 10.0 mm and a delay of root elongation at 0.1 mm MG were mitigated, although there was no significant difference in chlorosis between the wild type and mutant. Moreover, the aba2-2 mutation impaired MG-induced RD29B and RAB18 gene expression. These observations suggest that MG not only directly inhibits germination and root elongation but also indirectly modulates these processes via endogenous ABA in Arabidopsis.
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Mizuno S, Murata Y, Kuriyama N, Ohsawa I, Kishiwada M, Hamada T, Usui M, Sakurai H, Tabata M, Isaji S. Living donor liver transplantation for the patients with portal vein thrombosis: use of an interpositional venous graft passed posteriorly to the pancreatic parenchyma without using jump graft. Transplant Proc 2012; 44:356-9. [PMID: 22410015 DOI: 10.1016/j.transproceed.2012.01.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
BACKGROUND It is difficult to reconstruct the portal vein (PV) using a long interpositional venous graft in living donor liver transplant (LDLT) patients with portal vein thrombosis (PVT), which involves the confluence of the superior mesenteric vein (SMV) and splenic vein (SV). We successfully performed LDLT for three patients with PVT using an interpositional vascular conduit passing posterior to the pancreas without a jump graft. METHODS Three of 130 patients who underwent LDLT in our hospital between March 2002 and June 2011 required this technique. After indentifying the location of the SMV, SV and gastrocolic trunk, we ligated and cut the posterior superior pancreaticoduodenal vein and other short branches from the PV. The PV was drawn inferiorly to the pancreas and transected at the confluence of SMV and SV. The external iliac vein or internal jugular vein was sacrificed as a graft for anastomosis to the cut end of the SMV using 6-0 polypropylene running sutures. Then the venous graft was drawn superiorly to the pancreas by passing it posterior to the pancreas parenchyma for anastomosis to the liver graft PV. The interpositional vein was placed posterior to the pancreas where the PV used to be. RESULTS All three patients displayed favorable postoperative courses with the Doppler ultrasound demonstrating good portal flow perioperatively. The postoperative portogram demonstrated patency of the vascular graft. CONCLUSION This method is easy and helpful to treat portal vein thrombosis, by providing the shortest route between the PV of the donor and the SMV of the recipient.
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Harashima SI, Ogura M, Tanaka D, Fukushima T, Wang Y, Koizumi T, Aono M, Murata Y, Seike M, Inagaki N. Sitagliptin add-on to low dosage sulphonylureas: efficacy and safety of combination therapy on glycaemic control and insulin secretion capacity in type 2 diabetes. Int J Clin Pract 2012; 66:465-76. [PMID: 22512606 DOI: 10.1111/j.1742-1241.2012.02903.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
AIMS To assess the efficacy and safety of combination therapy with sitagliptin and low dosage sulphonylureas on glycaemic control and insulin secretion capacity in Japanese type 2 diabetes. METHODS Eighty-two subjects were sequentially recruited for the 52-week, prospective, single arm study. Sitagliptin was added on to sulphonylureas (glimepride or gliclazide) with or without metformin. The primary endpoint was a change in A1C. The secondary endpoints were changes in BMI, insulin secretion capacity, blood pressure and urinary albumin excretion, unresponsive rate, and hypoglycaemia. Insulin secretion capacity was evaluated by glucagon loading test. RESULTS Change in A1C was -0.80% (95% CI -0.90 to -0.68) (p < 0.001). Change in BMI, systemic and diastolic blood pressure, and urinary albumin excretion were -0.38 kg/m(2) (95% CI -0.72 to -0.04) (p < 0.05), -6.7/-3.6 mmHg (95% CI -10.0 to -3.4/-4.8 to -2.4) (p < 0.001), and -43.2 mg/gCr (95% CI -65.7 to -20.8) (p < 0.001) respectively. Mild hypoglycaemia was observed in three cases. The unresponsive rate was 6.1%. Glucagon loading test showed that 0-min and 6-min CPR at baseline and 52-week were not significantly changed: 0-min CPR, 1.58 ± 0.58-1.71 ± 0.73 ng/ml; 6-min CPR, 3.48 ± 1.47-3.58 ± 1.21 ng/ml. Insulin secretion capacity, CPI and SUIT index at baseline did not predict the efficacy of the combination therapy. The final dosages of glimepiride and gliclazide were 1.44 ± 0.90 mg and 34.5 ± 15.3 mg respectively. The dosage of sitagliptin was increased from 50 mg to 69.0 ± 24.5 mg in 52-week. CONCLUSIONS The combination therapy with sitagliptin and low dosage sulphonylureas was safe and effective for glycaemic control. Glucagon loading test indicated that 1 year administration of sitagliptin and sulphonylureas preserved insulin secretion capacity.
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Yamamoto M, Kumekawa H, Sasaki K, Murata Y, Ohki M, Kurosu T, Fukuda T, Arai A, Murakami N, Miura O. [Marked reactive plasmacytosis accompanied by drug eruption in a patient with aplastic anemia]. [RINSHO KETSUEKI] THE JAPANESE JOURNAL OF CLINICAL HEMATOLOGY 2012; 53:526-530. [PMID: 22728555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A 61-year-old woman with aplastic anemia was admitted to our hospital in October 2009 because of fever and abdominal pain. She had been treated with cyclosporin A without showing any effect. On admission, uterine cancer was diagnosed and the left uterine appendages were swollen. She was treated with cefepime for febrile neutropenia without effect, and left-sided adnexitis was diagnosed. After cefepime was changed to meropenem, marked plasmacytosis was observed in the peripheral blood (23%) and bone marrow (79%) with the appearance of skin eruption. Although the plasma cells were morphologically abnormal, the cytoplasmic immunoglobulin light chain deviation was not detected by flow cytometric analysis, and M protein was not found by serum immunoelectrophoresis. She was diagnosed with reactive plasmacytosis and treated with dexamethasone. The drug eruption and plasmacytosis improved soon after starting the treatment. Although reactive plasmacytosis is observed with a variety of conditions, including infection, neoplasms, autoimmune disorders, and hemolytic anemia, it has not been reported to accompany drug eruption. Reactive plasmacytosis is sometimes not possible to distinguish from plasma cell neoplasms on morphology alone and needs to be diagnosed comprehensively by using flow cytometric analysis and immunohistochemical evaluation.
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Kazama I, Maruyama Y, Murata Y, Sano M. Voltage-dependent biphasic effects of chloroquine on delayed rectifier K(+)-channel currents in murine thymocytes. J Physiol Sci 2012; 62:267-74. [PMID: 22328488 PMCID: PMC10716932 DOI: 10.1007/s12576-012-0195-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2011] [Accepted: 01/20/2012] [Indexed: 11/29/2022]
Abstract
Lymphocytes are of rich in delayed rectifier K(+)-channels (Kv1.3) in their plasma membranes, and the channels play crucial roles in the lymphocyte activation and proliferation. Since chloroquine, a widely used anti-malarial drug, exerts immunosuppressive effects, it will affect the channel currents in lymphocytes. In the present study, employing the standard patch-clamp whole-cell recording technique, we examined the effects of chloroquine on the channels expressed in murine thymocytes. Published papers report that chloroquine will inhibit voltage-dependent K(+)-channel currents by plugging into the open-pore. We observed, indeed, that chloroquine suppressed the pulse-end currents of Kv1.3-channels at higher voltage steps. Surprisingly, however, we found that the drug enhanced the peak currents at both higher and lower voltage steps. Since chloroquine showed such biphasic effects on the thymocyte K(+)-channels, and since those effects were voltage dependent, we examined the effects of chloroquine on the activation and the inactivation of the channel currents. We noted that chloroquine shifted both the activation and the inactivation curves toward the hyperpolarizing potential, and that those shifts were more emphasized at lower voltage steps. We conclude that chloroquine facilitates both the activation and the inactivation of Kv1.3-channel currents in thymocytes, and that those effects are voltage dependent.
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Yotsukura H, Seguchi O, Sato T, Sunami H, Murata Y, Yanase M, Fujita T, Toda K, Nakatani T. 740 Impact of Reverse Remodeling Following LVAD Implantation on Predicting Long-Term Prognosis during LVAD Support Period. J Heart Lung Transplant 2012. [DOI: 10.1016/j.healun.2012.01.756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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80
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Ge M, Nagel U, Hüvonen D, Rõõm T, Mamone S, Levitt MH, Carravetta M, Murata Y, Komatsu K, Lei X, Turro NJ. Infrared spectroscopy of endohedral HD and D2 in C60. J Chem Phys 2012; 135:114511. [PMID: 21950875 DOI: 10.1063/1.3637948] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
We report on the dynamics of two hydrogen isotopomers, D(2) and HD, trapped in the molecular cages of a fullerene C(60) molecule. We measured the infrared spectra and analyzed them using a spherical potential for a vibrating rotor. The potential, vibration-rotation Hamiltonian, and dipole moment parameters are compared with previously studied H(2)@C(60) parameters [M. Ge, U. Nagel, D. Hüvonen, T. Rõõm, S. Mamone, M. H. Levitt, M. Carravetta, Y. Murata, K. Komatsu, J. Y.-C. Chen, and N. J. Turro, J. Chem. Phys. 134, 054507 (2011)]. The isotropic part of the potential is similar for all three isotopomers. In HD@C(60), we observe mixing of the rotational states and an interference effect of the dipole moment terms due to the displacement of the HD rotation center from the fullerene cage center.
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Sugiyama T, Hirose T, Nakashima M, Ishida K, Oki Y, Murata Y, Kusumoto S, Shirai T, Yamaoka T, Okuda K, Ohnishi T, Ohmori T, Adachi M. Evaluation of the efficacy and safety of the combination of gemcitabine and nedaplatin for elderly patients with advanced non-small-cell lung cancer. Oncology 2011; 81:273-80. [PMID: 22122886 DOI: 10.1159/000334430] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2011] [Accepted: 10/11/2011] [Indexed: 11/19/2022]
Abstract
OBJECTIVE The aim of the present study was to retrospectively assess the safety and efficacy of the combination of gemcitabine and nedaplatin in elderly patients with advanced non-small-cell lung cancer (NSCLC). METHODS Patients ≥75 years with previously untreated NSCLC who underwent chemotherapy consisting of gemcitabine (800 mg/m(2) on days 1 and 8) and nedaplatin (80 mg/m(2) on day 1) every 3 weeks were retrospectively analyzed. RESULTS Of the 35 patients, 28 were men and 7 were women, with a mean age of 78 years (range 75-87); 10 patients had stage IIIB disease and 25 patients had stage IV disease. The overall response rate was 45.7% (95% confidence interval 28.8-63.4). The median survival time was 14 months (range 3-44). Grade 3-4 toxicities included neutropenia in 74.3%, thrombocytopenia in 48.6%, anemia in 34.3%, hepatic dysfunction in 11.4%, and infection in 2.9%. There were no treatment-related deaths. There were no differences in response rate and survival between patients aged 75-79 years and patients ≥80 years, although grade 3-4 thrombocytopenia and anemia were significantly more frequent in patients ≥80 years. CONCLUSION Our results suggest that the combination of gemcitabine and nedaplatin is effective and well tolerated for selected elderly patients with advanced NSCLC.
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Yaogawa S, Ogawa Y, Morio K, Yasunami H, Morita I, Tuzuki A, Akima R, Tokuhiro S, Geshi H, Murata Y. 4014 POSTER Evaluation of Therapeutic Response to a New Radiosensitization Treatment (KORTUC II) for Aged And/or Surgery-refusing Patients With Stage l/lI Breast Cancer by Dynamic MRI. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)71257-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Abstract
Abstract
The haemolytic action of various N-alkyl derivatives (lauryl; C12H25-, myristyl; C14H29-, palmityl; C16H33-) of 1,3-diaminopropane, 1,4-diaminobutane, 1,5-diaminopentane, 1,6-diaminohexane, 1,7-diaminoheptane, 1,8-diaminooctane was examined using rabbit red blood cells. The activities of the various derivatives were compared with those of antiplaque agents commonly used as mouthwashes; cetylpyridinium chloride (CP) and chlorhexidine acetate (CH). The haemolytic activities of these agents were dependent on the length of the N-alkyl chain, whereas the number of methylene groups between the nitrogen atoms had little effect. The order of potency was CP, N-palmityl derivatives, N-myristyl derivatives > N-lauryl derivatives > CH which was similar to the order of the antiplaque effect evaluated in-vitro.
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Kakihana K, Ohashi K, Hirashima Y, Murata Y, Kobayashi T, Yamashita T, Sakamaki H, Akiyama H. Clinical impact of pre-transplant pulmonary impairment on survival after allogeneic hematopoietic stem cell transplantation. Pathol Oncol Res 2011; 18:11-6. [PMID: 21455634 DOI: 10.1007/s12253-011-9383-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2011] [Accepted: 03/08/2011] [Indexed: 11/28/2022]
Abstract
We retrospectively analyzed the clinical outcomes of patients with pulmonary impairment before undergoing allogeneic hematopoietic stem cell transplantation (HSCT) for the first time. Among 297 evaluable patients who underwent their first HSCT, 23 had restrictive, obstructive or mixed ventilatory impairment (n = 9, 13 and 1, respectively). Males predominated among the patients with pulmonary impairment (p = 0.037) and received a reduced intensity conditioning (RIC) regimen more frequently, although the difference did not reach statistical significance (p = 0.05). Among 23 patients with pulmonary impairment, 9 underwent post-transplant pulmonary function tests and obstructive ventilatory impairment progressed only in 2 patients, both of whom developed bronchiolitis obliterans. Kaplan-Meier estimates of 3-year overall (OS) among patients with and without pulmonary impairment were 57% and 47%, respectively, and those of relapse-free survival (RFS) were 70%, and 68%, respectively, with no significant differences between the groups (OS, p = 0.235; RFS, p = 0.287). The rates of non-relapse mortality also did not significantly differ (p = 0.835). Our results suggest that allogeneic HSCT is safe for patients with pulmonary impairment. The lower frequency of fatal pulmonary complications after HSCT and the RIC regimen might contribute to favorable survival rates.
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Noguchi R, Nakayama K, Ishihara K, Murata Y, Node K, Morita S. 66 Fabrication of Engineered Pulsatile 3-Dimensional Scaffold-Free Cardiac Tissue from Embryonic Stem Cells. J Heart Lung Transplant 2011. [DOI: 10.1016/j.healun.2011.01.073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Murata Y, Shishido T, Seguchi O, Yanase M, Fujita T, Toda K, Uemura K, Sugimachi M, Nakatani T. 632 Novel Quantification of Right Ventricular Pump Function To Estimate the Feasibility of Weaning from Inotropic Support after Implantation of Left Ventricular Assist System. J Heart Lung Transplant 2011. [DOI: 10.1016/j.healun.2011.01.645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Miyabe Y, Murata Y, Baba Y, Ito E, Nagasaka K. Successful treatment of cyclosporine-A-resistant cytophagic histiocytic panniculitis with tacrolimus. Mod Rheumatol 2011; 21:553-6. [PMID: 21380742 DOI: 10.1007/s10165-011-0435-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2010] [Accepted: 02/14/2011] [Indexed: 11/27/2022]
Abstract
A 34-year-old woman with discoid lupus erythematosus and lupus profundus was admitted to our hospital showing signs of a fever, malaise, and abdominal swelling. Diagnosis of cytophagic histiocytic panniculitis (CHP) was made based on lobular panniculitis with a hemophagocytosis. Treatment with high doses of prednisolone combined with cyclosporine A (CsA) was not effective enough. However, after changing CsA to tacrolimus (TAC), CHP improved. Our case demonstrates that TAC may be a novel therapy for CHP.
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Ge M, Nagel U, Hüvonen D, Rõõm T, Mamone S, Levitt MH, Carravetta M, Murata Y, Komatsu K, Chen JYC, Turro NJ. Interaction potential and infrared absorption of endohedral H2 in C60. J Chem Phys 2011; 134:054507. [DOI: 10.1063/1.3535598] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
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Reddy KTR, Ramya K, Sreedevi G, Shimizu T, Murata Y, Sugiyama M. Studies on the Energy Band Discontinuities in SnS/ZnMgO Thin Film Heterojunction. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.egypro.2011.10.172] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Murata Y, Endo I, Miura A, Ohashi K. Spontaneous huge hematoma in the abdominal wall after lenalidomide. Intern Med 2011; 50:937. [PMID: 21498947 DOI: 10.2169/internalmedicine.50.5136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Zhu WJ, Nakayama M, Mori T, Nakayama K, Katoh J, Murata Y, Sato T, Kabayama S, Ito S. Intake of water with high levels of dissolved hydrogen (H2) suppresses ischemia-induced cardio-renal injury in Dahl salt-sensitive rats. Nephrol Dial Transplant 2010; 26:2112-8. [DOI: 10.1093/ndt/gfq727] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ushida T, Shimo K, Ikemoto T, Ueno T, Murata Y, Taniguchi S, Tani T. S46-6 Neuroimaging for pain. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)60279-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Zhang JJ, Okutani F, Huang GZ, Taniguchi M, Murata Y, Kaba H. Common properties between synaptic plasticity in the main olfactory bulb and olfactory learning in young rats. Neuroscience 2010; 170:259-67. [PMID: 20558253 DOI: 10.1016/j.neuroscience.2010.06.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2010] [Revised: 05/19/2010] [Accepted: 06/02/2010] [Indexed: 01/17/2023]
Abstract
Aversive olfactory learning was established in young rats after odor exposure paired with foot shock through a classical conditioning paradigm. Using behavioral pharmacology and Western blotting, we previously reported that plasticity in the main olfactory bulb (MOB) underlies aversive olfactory learning. Since long-term potentiation (LTP) observed in the hippocampus is believed to be a cellular substrate for aspects of memory, we attempted to induce LTP in the MOB. Using brain slices containing the MOB, we found that five tetani of the lateral olfactory tract evoked LTP that was blocked by the N-methyl-d-aspartate (NMDA) receptor antagonist AP5. Although three tetani induced no significant changes in control slices, with noradrenaline (NA) application they produced clear LTP (NA-mediated LTP), which was not dependent on NMDA receptors. NA's facilitating effect on LTP induction was blocked by the beta-adrenoceptor antagonist timolol but not by the alpha-adrenoceptor antagonist phentolamine, and was mimicked by the beta-adrenoceptor agonist isoproterenol. The l-type calcium channel blocker nifedipine completely blocked LTP as well as NA-mediated LTP. In addition, we found that aversive olfactory learning was impaired by beta-adrenoceptor antagonist, timolol but not by alpha-adrenoceptor antagonist, phentolamine, and only odor training established olfactory learning by isoproterenol infusion. Moreover, we found that nifedipine but not AP5 prevented olfactory learning formation. These common properties provided evidence for neural correlates between NA-mediated LTP aversive olfactory learning in young rats.
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Murata Y, Hirose T, Yamaoka T, Shirai T, Okuda K, Sugiyama T, Kusumoto S, Ohnishi T, Ohmori T, Adachi M. Phase II study of the combination of carboplatin and irinotecan in elderly patients with small cell lung cancer. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e18033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Koyama S, Tomimatsu T, Kanagawa T, Sawada K, Tsutsui T, Kimura T, Chang YS, Wasada K, Imai S, Murata Y. Spinal subarachnoid hematoma following spinal anesthesia in a patient with HELLP syndrome. Int J Obstet Anesth 2009; 19:87-91. [PMID: 19945267 DOI: 10.1016/j.ijoa.2009.05.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2008] [Revised: 04/21/2009] [Accepted: 05/19/2009] [Indexed: 12/14/2022]
Abstract
A case of subarachnoid hematoma following spinal anesthesia for cesarean section in a patient with HELLP syndrome is reported. A 39-year-old woman underwent cesarean section under spinal anesthesia for worsening preeclampsia with HELLP syndrome. Despite full recovery from the spinal anesthetic, on the second postoperative day she felt numbness on the posterior aspect of her right leg, noticed she was insensitive to bladder fullness and had mild flaccid paraparesis. Magnetic resonance imaging revealed a spinal subarachnoid hematoma with cauda equina compression. With conservative management she made an almost complete recovery within three months. Serial magnetic resonance imaging showed spontaneous regression of the hematoma. The risk of spinal subarachnoid hematoma following obstetric regional anesthesia is exceedingly small even in a patient with coagulopathy and, to our knowledge, this is only the second reported case following obstetric regional anesthesia. Anesthesia for HELLP syndrome in patients with an adequate platelet count but without disseminated intravascular coagulation is controversial. It is therefore important for clinicians to recognize the symptoms and signs of spinal subarachnoid hematoma to avoid delay in treatment that might result in severe neurological deficit.
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Kurata A, Murata Y, Kubota K, Osanai T, Shibuya H. Multiple (18)F-FDG, PET-CT for postoperative monitoring of breast cancer patients. Acta Radiol 2009; 50:979-83. [PMID: 19863406 DOI: 10.3109/02841850903147046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Positron emission tomography (PET)-computed tomography (CT) may be useful in the post-treatment follow-up of breast cancer patients. PURPOSE To assess the usefulness of (18)F-fluorodeoxyglucose (FDG) PET-CT (PET-CT) for postoperative monitoring of breast cancer patients. MATERIAL AND METHODS One hundred twenty-nine PET-CT studies performed on 55 female postoperative breast cancer patients (median age 56 years, range 36-86 years) were analyzed. The median interval between the PET-CT studies was 6 months (range 1-15 months). In order to determine the usefulness of serial PET-CT examinations in the postoperative follow-up of breast cancer patients, the PET-CT findings were compared with the physical findings, findings obtained by other imaging modalities, and the (18)F-FDG-PET (PET) findings. RESULTS The PET findings were negative in 4 metastatic bone lesions with a positive bone scan. The PET findings were also negative in 6 of 9 osteogenic bone metastases and one of 64 osteolytic bone lesions. There were 5 cases with false-positive of PET, which were determined to be areas of soft-tissue hyperactivity. All false-positive/-negative findings were corrected by the addition of CT. CONCLUSION The results of this study lend support to the clinical role of PET-CT in the postoperative follow-up/monitoring of breast cancer patients.
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Okugawa T, Itoh M, Murata Y, Seo H. Effect of aphidicolin on DNA synthesis in cultured human thyroid cells. Exp Clin Endocrinol Diabetes 2009; 103:88-93. [PMID: 7553080 DOI: 10.1055/s-0029-1211334] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
To investigate whether partial inhibition of DNA synthesis affects the growth of thyroid cells, human thyroid cells were cultured in the presence of aphidicolin for 24h. After removal of aphidicolin, the growth of thyroid cells was evaluated by [3H] thymidine uptake and analysis of cell cycle by flow cytometry. In Graves' thyroid cells, [3H] thymidine uptake and the percentage of cells in S+G2/M phase increased during 24 hours after washout of aphidicolin, whereas those were not augmented in normal thyroid cells. Thus, the acceleration of DNA synthesis occurred after the partial inhibition of it by aphidicolin in Graves' thyroid cells, but not in the normal thyroid cells. This phenomenon might, at least in part, explain the difference of growth regulation between Graves' and normal thyroid cells.
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Sugimura Y, Murase T, Oyama K, Uchida A, Sato N, Hayasaka S, Kano Y, Takagishi Y, Hayashi Y, Oiso Y, Murata Y. Prevention of neural tube defects by loss of function of inducible nitric oxide synthase in fetuses of a mouse model of streptozotocin-induced diabetes. Diabetologia 2009; 52:962-71. [PMID: 19283362 DOI: 10.1007/s00125-009-1312-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2008] [Accepted: 02/08/2009] [Indexed: 12/12/2022]
Abstract
AIMS/HYPOTHESIS Maternal diabetes during pregnancy increases the risk of congenital malformations such as neural tube defects (NTDs). Although the mechanism of this effect is uncertain, it is known that levels of nitric oxide synthase (NOS) and nitric oxide are elevated in embryos of a mouse model of diabetes. We postulated that overproduction of nitric oxide causes diabetes-induced congenital malformations and that inhibition of inducible NOS (iNOS) might prevent diabetic embryopathy. METHODS Mice were rendered hyperglycaemic by intraperitoneal injection of streptozotocin. The incidence of congenital malformations including NTDs was evaluated on gestational day 18.5. We assessed the involvement of iNOS in diabetes-induced malformation by administering ONO-1714, a specific inhibitor of iNOS, to pregnant mice with streptozotocin-induced diabetic mice and by screening mice with iNOS deficiency due to genetic knockout (iNos(-/-)). RESULTS ONO-1714 markedly reduced the incidence of congenital anomalies, including NTDs, in fetuses of a mouse model of diabetes. It also prevented apoptosis in the head region of fetuses, indicating that iNOS is involved in diabetes-related congenital malformations. Indeed, no NTDs were observed in fetuses of diabetic iNos(-/-) mice and the incidence of other malformations was also markedly reduced. CONCLUSIONS/INTERPRETATION We conclude that increased iNOS activity during organogenesis plays a crucial role in the pathogenesis of diabetes-induced malformations and suggest that inhibitors of iNOS might help prevent malformations, especially NTDs, in diabetic pregnancy.
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