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Minami Y, Satoh M, Maesawa C, Takahashi Y, Tabuchi T, Itoh T, Nakamura M. Effect of atorvastatin on microRNA 221 / 222 expression in endothelial progenitor cells obtained from patients with coronary artery disease. Eur J Clin Invest 2009; 39:359-67. [PMID: 19371267 DOI: 10.1111/j.1365-2362.2009.02110.x] [Citation(s) in RCA: 143] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND Endothelial progenitor cells (EPCs) play an important role in the maintenance of vascular integrity. Lipid lowering therapy (LLT) with statins may contribute to biologically relevant activities including the proliferation of endothelial cells. The physiological role of microRNA (miR)-221/222, a newly discovered class of small RNA, is closely linked to the proliferation of endothelial cells. We therefore investigated whether LLT with statins might affect miR-221/222 expression in EPCs obtained from patients with coronary artery disease (CAD). MATERIALS AND METHODS This study included 44 patients with stable CAD and 22 subjects without CAD (non-CAD). Patients with CAD were randomized to 12 months of LLT with atorvastatin (10 mg day(-1)) or pravastatin (10 mg day(-1)). EPCs were obtained from peripheral blood at baseline and after 12 months of statin therapy. Levels of miR-221/222 in EPCs were measured by real-time RT-PCR. RESULTS Levels of miR-221/222 were significantly higher in the CAD group than in the non-CAD group (P < 0.01). Levels of miR-221/222 were weakly negatively correlated with EPC number in the CAD group. After 12 months of therapy, changes in lipid profiles were greater in the atorvastatin group than in the pravastatin group. LLT with atorvastatin markedly increased EPC numbers and decreased miR-221/222 levels (all P < 0.05), whereas LLT with pravastatin did not change EPC numbers or miR-221/222 levels. CONCLUSIONS This study demonstrates that LLT with atorvastatin increases EPC numbers and decreases miR-221/222 levels in patients with CAD, possibly contributing to the beneficial effects of LLT with atorvastatin in this disorder.
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102
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Nakagawa E, Itoh T, Yoshie H, Satokata I. Odontogenic potential of post-natal oral mucosal epithelium. J Dent Res 2009; 88:219-23. [PMID: 19329453 DOI: 10.1177/0022034509333198] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A bioengineered tooth would provide a powerful alternative to currently available clinical treatments. Previous experiments have succeeded in bioengineering teeth using tooth germs from animal embryos. However, the ultimate goal is to develop a technology which enables teeth to be regenerated with the use of autologous cells. To pursue this goal, we re-associated the palatal epithelium from young mice with the odontogenic dental mesenchyme and transplanted the re-associated tissues into mouse kidney capsules. Morphologically defined teeth were formed from the re-associated cultured palatal epithelial cell sheets from mice aged up to 4 wks, but no tooth was formed when the palatal epithelium from mice after 2 days of age was directly re-associated. Our results demonstrated that post-natal non-dental oral mucosal epithelium can be used as a substitute for dental epithelium, and that epithelial cell sheet improves the ability of the oral epithelium of older mice to differentiate into dental epithelium.
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103
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Rikitake K, Sato M, Ohtsubo S, Itoh T. [Sweet's syndrome after off-pump coronary artery bypass grafting]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2009; 62:211-213. [PMID: 19280952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We report a 73-year-old man with myelodysplastic syndrome (MDS) who developed Sweet's disease after off-pump coronary artery bypass grafting (OPCAB). Coronary angiography showed severe 3 vessel disease. We conducted OPCAB on triple vessels using bilateral internal thoracic artery and saphenous vein grafts. He had a high fever and rubor around the median skin incision on 5 postoperative day. Skin biopsy demonstrated acute febrile neutrophilic dermatitis (Sweet's disease). The cutaneous lesions improved gradually by corticosteroids. A careful attention should be paid postoperatively in a patient with hematological disorders such as MDS, aplastic anemia, and malignancy.
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104
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Inden Y, Tsuda M, Hayashi H, Takezawa H, Iino S, Kondo T, Yoshida Y, Akahoshi M, Terasawa M, Itoh T, Saito H, Hirai M. Relationship between Joint National Committee-VI classification of hypertension and ambulatory blood pressure in patients with hypertension diagnosed by casual blood pressure. Clin Cardiol 2009; 21:801-6. [PMID: 9825191 PMCID: PMC6655747 DOI: 10.1002/clc.4960211104] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND White-coat hypertension has been diagnosed arbitrarily based on different criteria. In 1997, the Joint National Committee-VI (JNC-VI) reported a new classification of hypertension and strongly emphasized the importance of ambulatory blood pressure (ABP) monitoring. The report pronounced normal ABP values for the first time. HYPOTHESIS The study's aim was to clarify the relationship between casual blood pressure (BP) and ABP of patients with essential hypertension in each stage of JNC-VI classification, and the prevalence of white-coat hypertension diagnosed by using JNC-VI normal ABP criteria. METHODS Ambulatory blood pressure was monitored non-invasively in 232 patients with essential hypertension whose casual BP was > or = 140/90 mmHg. The patients were classified according to JNC-VI classification, and their casual BP was compared with ABP. The criterion of white-coat hypertension was defined as casual BP > or = 140/90 mmHg with normal ABP according to JNC-VI criteria (< 135/85 during daytime and < 120/75 during nighttime). RESULTS Mean ABP increased as the stage advanced, and the differences between casual BP and ABP also increased. There were considerable overlaps in the distribution of ABP among stages. The prevalence of white-coat hypertension was 13% overall: 30% of the patients with isolated systolic hypertension, 19% of those in stage 1, 10% in stage 2, and 4% in stage 3. CONCLUSIONS Classification of hypertension based on casual BP may not always correspond in severity to that based on ABP. Ambulatory blood pressure monitoring recommended by JNC-VI is very useful for the evaluation of hypertension to differentiate white-coat hypertension from true hypertension.
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Ozaki Y, Itoh T, Yoshida K, Kitahama Y, Han XX, Zhao B. Mechanism of surface-enhanced Raman scattering and its application to highly sensitive protein detection. GUANG PU XUE YU GUANG PU FEN XI = GUANG PU 2009; 29:396-398. [PMID: 19445212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
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106
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Hamana K, Hayashi H, Niitsu M, Itoh T. Polyamine analysis of thermophilic, acidophilic, alkaliphilic and radio-tolerant bacteria belonging to the domain Bacteria and methanogens, thermophiles and extreme halophiles belonging to the domain Archaea-Polyamine catalogues of bacterial (eubacterial) and archaeal (archaebacterial) extremophiles IV-. ACTA ACUST UNITED AC 2009. [DOI: 10.3118/jjse.8.59] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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107
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Sumiyoshi T, Higuchi Y, Itoh T, Matsui M, Arai H, Suzuki M, Sumiyoshi C, Kawasaki Y. Effect of Perospirone on p300 Electrophysiological Activity and Social Cognition in Schizophrenia: A Three-dimensional Analysis with (s)loreta. Eur Psychiatry 2009. [DOI: 10.1016/s0924-9338(09)71436-1] [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] [Indexed: 11/25/2022] Open
Abstract
The purpose of this study was to determine if perospirone, a second generation antipsychotic drug and partial agonist at serotonin-5-HT1A receptors, enhances electrophysiological activity, such as event-related potentials (ERPs), in frontal brain regions, as well as cognitive function in subjects with schizophrenia. P300 current source images were obtained by means of standardized low resolution brain electromagnetic tomography (sLORETA) before and after treatment with perospirone for 6 months. Perospirone significantly increased P300 current source density in the left superior frontal gyrus, and improved positive symptoms and performance on the script tasks, a measure of verbal social cognition. Perospirone also tended to enhance verbal learning memory in patients with schizophrenia. There was a significant correlation between the changes in P300 amplitudes on the left frontal lead and those in social cognition. These results suggest the changes in three-dimensional distribution of cortical activity, as demonstrated by sLORETA, may mediate some of the actions of antipsychotic drugs. the distinct cognition-enhancing profile of perospirone may be related to its actions on 5-HT1A receptors.
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108
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Itoh T. Excitation-energy dependence of the phosphorescence quantum yields of pyridinecarboxaldehyde vapors. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2008; 71:1360-1363. [PMID: 18515180 DOI: 10.1016/j.saa.2008.04.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2008] [Revised: 03/19/2008] [Accepted: 04/16/2008] [Indexed: 05/26/2023]
Abstract
Emission and excitation spectra of 3- and 4-pyridinecarboxaldehyde vapors have been measured at different pressures down to 10(-2)Torr. The phosphorescence quantum yield measured at low pressure as a function of excitation energy is nearly constant in the range of excitation energy corresponding to the S1(n, pi*) state, but it decreases abruptly at the S2(pi, pi*) threshold. The onset of the abrupt decrease of the yield corresponds to the location of the S2 absorption origin of each molecule, indicating that the nonradiative pathway depends on the type of the excited singlet state to which the molecule is initially excited. The relaxation processes are discussed based on the pressure and excitation-energy dependence of the phosphorescence quantum yield.
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109
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Itoh T. Evidence for occurrence of the intramolecular CHO group rotation in the excited state for 3-pyridinecarboxaldehyde vapor. Chem Phys Lett 2008. [DOI: 10.1016/j.cplett.2008.10.063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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110
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Itoh T, Yamaji M. 11Bu (S2) and 21Ag (S1) Fluorescence and the 21Ag State of α,ω-Dithienylbutadiene and α,ω-Dithienylethylene. J Phys Chem A 2008; 112:13413-8. [DOI: 10.1021/jp804592m] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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111
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Tapingkae W, Tanasupawat S, Itoh T, Parkin KL, Benjakul S, Visessanguan W, Valyasevi R. Natrinema gari sp. nov., a halophilic archaeon isolated from fish sauce in Thailand. Int J Syst Evol Microbiol 2008; 58:2378-83. [DOI: 10.1099/ijs.0.65644-0] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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112
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Hirano M, Itoh T, Shirayama S. Numerical visualization by rapid isosurface extractions using 3D span spaces. J Vis (Tokyo) 2008. [DOI: 10.1007/bf03181706] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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113
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Yachai M, Tanasupawat S, Itoh T, Benjakul S, Visessanguan W, Valyasevi R. Halobacterium piscisalsi sp. nov., from fermented fish (pla-ra) in Thailand. Int J Syst Evol Microbiol 2008; 58:2136-40. [DOI: 10.1099/ijs.0.65592-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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114
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Sasaki MS, Nomura T, Ejima Y, Utsumi H, Endo S, Saito I, Itoh T, Hoshi M. Experimental Derivation of Relative Biological Effectiveness of A-Bomb Neutrons in Hiroshima and Nagasaki and Implications for Risk Assessment. Radiat Res 2008; 170:101-17. [DOI: 10.1667/rr1249.1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2007] [Accepted: 04/07/2008] [Indexed: 11/03/2022]
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115
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Yuba >T, Itoh T, Yamasoba T, Kaga K. Advancement in singing ability using The YUBA Method in patients with cochlear implants. Acta Otolaryngol 2008; 128:465-72. [PMID: 18368584 DOI: 10.1080/00016480701765683] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
CONCLUSION Although overall improvement was not so dramatic due to a lack of retention, session by session advancement of matching pitch for targeted MIDI (Musical Instrument Digital Interface) sound was predominantly obvious. It was proved that The YUBA Method worked to improve singing ability for patients with cochlear implants. OBJECTIVES This study sought to verify whether or not the Yuba theory and method improved the singing ability of patients with cochlear implants. SUBJECTS AND METHODS Based on diagnosis, the instructor experimented to improve matching pitch of singing for three patients with cochlear implants using The YUBA Method. The mean fundamental frequencies and standard deviation of singing were then compared with before and after instructions to patients. The instruction was given for over 40 days at the University of Tokyo Hospital. RESULTS For each patient, the mean fundamental frequencies of their singing approached the mean MIDI specified frequencies as references for tests done in all three songs. Overall, the SD between fundamental frequencies of their singing and reference MIDI sounds became smaller.
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116
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Kohri K, Fujita K, Itoh T, Tawada T, Sakakura T, Umekawa T, Kurita T. Purification and Characterization of Urinary Stone Protein. Aktuelle Urol 2008. [DOI: 10.1055/s-2008-1055643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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117
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Matsuda M, Kaneko A, Fukuyama M, Itoh T, Shingaki M, Inoue M, Moore J, Murphy P, Ishida Y. First finding of urease-positive thermophilic strains of Campylobacter in river water in the Far East, namely, in Japan and their phenotypic and genotypic characterization. ACTA ACUST UNITED AC 2008. [DOI: 10.1111/j.1365-2672.1996.tb03554.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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118
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Masumori N, Kunishima Y, Hirobe M, Takeuchi M, Takayanagi A, Tsukamoto T, Itoh T. Measurement of Plasma Concentration of Gemcitabine and Its Metabolite dFdU in Hemodialysis Patients with Advanced Urothelial Cancer. Jpn J Clin Oncol 2008; 38:182-5. [DOI: 10.1093/jjco/hym171] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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119
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Satoh M, Ishikawa Y, Itoh T, Minami Y, Takahashi Y, Nakamura M. The expression of TNF-alpha converting enzyme at the site of ruptured plaques in patients with acute myocardial infarction. Eur J Clin Invest 2008; 38:97-105. [PMID: 18226043 DOI: 10.1111/j.1365-2362.2007.01912.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Tumour necrosis factor-alpha (TNF-alpha) converting enzyme (TACE) plays an essential role in the TNF-alpha shedding process, which could affect the outcome of acute myocardial infarction (AMI). However, it remains unclear whether it originates from the ruptured plaque or represents a systemic process. This study analysed TACE-mediated TNF-alpha shedding at the site of ruptured plaques in AMI patients and compared them with a systemic mechanism. MATERIALS AND METHODS The study included 60 patients with AMI who underwent percutaneous coronary intervention (PCI) and 21 patients with stable angina pectoris (SA). Local samples from the site of plaque were taken from AMI using aspiration catheter treatment. Systemic samples were also taken from the aorta in all patients with AMI and SA. RESULTS Systemic levels of TACE and TNF-alpha were higher in AMI patients than in SA patients. In AMI patients, these levels were higher in local samples than in systemic samples. A positive correlation was seen between local TACE and TNF-alpha levels in AMI patients. Thrombus material removed from the ruptured plaque showed immunostainings of TACE and TNF-alpha in infiltrating macrophages. By six months follow-up study, local TACE levels remained the only significant independent predictors of adverse cardiac events in AMI patients. CONCLUSIONS This study demonstrates that local expression of TACE is related to TNF-alpha shedding at the site of ruptured plaques in AMI patients. In addition, local TACE expression at the site of ruptured plaques may play an important role in poor outcomes in patients with AMI.
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Abe K, Zoghbi S, Inoue O, Itoh T, Hong J, Pike V, Innis R, Fujita M. In vivo density and affinity of [11C](R)-rolipram binding to phosphodiesterase 4 in rat measured with and without anesthesia. Neuroimage 2008. [DOI: 10.1016/j.neuroimage.2008.04.222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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121
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Hamana K, Hosoya R, Yokota A, Niitsu M, Hayashi H, Itoh T. Distribution of long linear and branched polyamines in the thermophiles belonging to the domain Bacteria. ACTA ACUST UNITED AC 2008. [DOI: 10.3118/jjse.7.1.10] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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122
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Nagase T, Nishio S, Itoh T. Essential elements in the coding region of mRNA for translation of ColE2 Rep protein. Plasmid 2007; 59:36-44. [PMID: 18061669 DOI: 10.1016/j.plasmid.2007.07.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2007] [Revised: 07/23/2007] [Accepted: 07/24/2007] [Indexed: 10/22/2022]
Abstract
Translation initiation of mRNA encoding the plasmid-specified initiator protein (Rep) required for initiation of the ColE2 plasmid DNA replication is fairly efficient in Escherichia coli despite the absence of a canonical Shine-Dalgarno sequence. Although a GA cluster sequence exists upstream the initiation codon, its activity as the SD sequence has been shown to be very inefficient. Deletion analyses have shown that there are sequences important for the Rep translation in the regions upstream the GA cluster sequence and downstream the initiation codon. To further define regions important for translation of the Rep mRNA, a set of the ColE2 rep genes bearing single-base substitution mutations in the coding region near the initiation codon was generated and their translation activities examined. We showed that translation of the Rep mRNA was reduced by some of these mutations in a region ranging at least 70 nucleotides from the initiation codon in the coding region, indicating the presence of translation enhancer(s) outside the translation initiation region which is covered by the ribosome bound to the initiation codon. Some of them seem to be essential and specific for translation of the ColE2 Rep mRNA due to the absence of a canonical SD sequence.
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Honda S, Morikawa T, Sasaki F, Okada T, Naito S, Itoh T, Kubota K, Todo S. Cystic thymoma in a child: a rare case and review of the literature. Pediatr Surg Int 2007; 23:1015-7. [PMID: 17674012 DOI: 10.1007/s00383-007-1988-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Thymomas are rare mediastinal tumors in pediatrics and cystic thymoma, is characterized by a predominantly cystic formation, is extremely rare. This report describes a 13-year-old girl with cystic thymoma, who was treated by video-assisted thoracoscopic surgery. The microscopic findings were characteristic of cystic thymoma. The literature on cystic thymoma is reviewed here and the clinical characteristics of cystic thymoma are discussed.
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Itoh T, Hayashi T, Isobe K, Kobayashi K, Yamanishi T. Self-Decomposition Behavior of High Concentration Tritiated Water. FUSION SCIENCE AND TECHNOLOGY 2007. [DOI: 10.13182/fst07-a1572] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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125
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Yuba T, Itoh T, Kaga K. Unique technological voice method (The YUBA Method) shows clear improvement in patients with cochlear implants in singing. J Voice 2007; 23:119-24. [PMID: 17904798 DOI: 10.1016/j.jvoice.2007.05.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2007] [Accepted: 05/09/2007] [Indexed: 10/22/2022]
Abstract
It is known that children with cochlear implants tend to sing off-key, monotonously, and flat. There are a few reports that it is possible to improve off-key singing mainly through instruction using the falsetto voice for people with normal hearing. We examined whether their singing skills could be improved through instruction. Eight subjects (five boys and three girls aged 10.4+/-2.4 years) with cochlear implants were selected. Speech perception scores of short sentences were on average 66.5%+/-26.5%. We diagnosed their singing acuity by letting them sing a nursery song, well known to all of them, before and after the instruction. The mean fundamental frequencies of their singing approached the mean Musical Instrument Digital Interface (MIDI)-specified frequencies as references and the deviation between fundamental frequencies of their singing and reference MIDI sounds became smaller. This study shows a clear improvement in the singing ability of children with cochlear implants through a unique technological voice method, mainly focused on the falsetto voice in this experiment.
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