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Tanigawa N, Sawada S, Morioka N, Iwamiya T, Senda T, Kobayashi M, Okuda Y, Ohta Y. Intraarterial Occlusion by Radiofrequency. Acta Radiol 2016. [DOI: 10.1177/028418519403500621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Arterial occlusion using radiofrequency energy was performed. The length of the noninsulated part of the guidewire was 10 mm and the duration of radiofrequency supply was 20 s. Animal experiments were carried out in 17 canine arteries; 4 out of 6 arteries less than 2.3 mm in diameter were completely occluded during the 20 s radiofrequency supply. A clinical application was also successfully performed without any complications. Arterial occlusion with radiofrequency can be applied to vessels less than about 2 mm in diameter.
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Suto Y, Kato T, Matsuo T, Kamba M, Shimatani Y, Ohuchi Y, Nakamura K, Ohta Y. Chondroitin Sulfate Iron Colloid as MR Contrast Agent in Differentiation between Hepatocellular Carcinoma and Adenomatous Hyperplasia. Acta Radiol 2016. [DOI: 10.1177/028418519303400305] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Using a 1.5 T MR imaging unit, T1- and T2-weighted images were obtained before and after i.v. administration of chondroitin sulfate iron colloid (CSIC) in order to differentiate hepatocellular carcinoma (n = 20) from adenomatous hyperplasia without atypia (n = 16). Differentiation was made from the tumor-liver contrast to noise ratio (CNR) and visual evaluation of the nodule, with reference to signal intensity relative to that of the surrounding liver. The CNR of adenomatous hyperplasia was on T1-weighted images significantly decreased after CSIC administration (p < 0.01). On T2-weighted images, there was no significant difference in CNR after CSIC administration. On the other hand, the CNR of hepatocellular carcinoma was significantly increased after CSIC administration on both T1- and T2-weighted images (p < 0.01). CSIC reflects intratumor reticuloendothelial cellular functions, and is therefore useful in differentiating hepatocellular carcinoma from adenomatous hyperplasia without atypia.
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Suto Y, Shimatani Y, Kato T, Kamba M, Ohuchi Y, Kodama F, Kato T, Ohta Y. Double Contrast MR Imaging with Iron Colloid and Gd-DTPA in Cholangiocellular Carcinoma. Acta Radiol 2016. [DOI: 10.1177/028418519403500623] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Double contrast MR imaging with combined use of chondroitin sulfate iron colloid (CSIC) and Gd-DTPA was attempted in 3 cases of cholangiocellular carcinoma (CCC). In all cases, nonenhanced spin echo T1- and T2-weighted images, and T1-weighted images after i.v. injection of Gd-DTPA were obtained. Within one week, the MR sequences were repeated one hour after i.v. injection of CSIC. Double contrast (CSIC/Gd-DTPA) T1-weighted imaging was evaluated and compared with the other sequences in terms of tumor detectability, tumor spreading and tumor characterization. Double contrast MR imaging was comparable in tumor detectability and superior as to the evaluation of spreading and characterization to the other MR imaging modalities.
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Sawada S, Fujiwara Y, Furui S, Tanabe Y, Tanigawa N, Kobayashi M, Iwamiya T, Morioka N, Ohta Y. Treatment of Tuberculous Bronchial Stenosis with Expandable Metallic Stents. Acta Radiol 2016. [DOI: 10.1177/028418519303400312] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Gianturco expandable metallic stents were placed in 5 patients with dyspnea on exercise due to tuberculous bronchial stenosis. The stents were placed after dilatation with a 10-mm diameter high pressure balloon catheter. In all 5 patients, obstructive changes disappeared following the procedure, and dyspnea on exercise improved markedly. No complications related to the procedure were encountered. At follow-up during a period of up to 38 months, 2 patients showed bronchial restenosis at 11 and 17 months, respectively, after stent placement. Restenosis by granulomatous tissue was successfully treated by laser ablation. One patient showed slight one-day hemoptysis 26 months after stent placement.
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Niikura N, Ohta Y, Hayashi N, Naito M, Kashiwabara K, Watanabe K, Yamashita T, Mukai H, Umeda M. Abstract OT1-03-02: Evaluation of the use of oral care to prevent oral mucositis in estrogen receptor positive metastatic breast cancer patients treated with everolimus: Phase III randomized control trial. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-ot1-03-02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background:
In patients with estrogen receptor (ER)-positive advanced breast cancer, everolimus plus exemestane prolongs progression-free survival compared to exemestane monotherapy. However, as an adverse event from everolimus, oral mucositis (all grades) has been reported in 58% of all patients and 81% of Asian patients. Although no established prevention method is available, a previous study reported that professional oral care might prevent oral mucositis, and dentists have hypothesized that such care can reduce the occurrence of oral mucositis induced by everolimus. To evaluate this hypothesis, we compare the incidence of oral mucositis with and without professional oral care.
Method:
This is a randomized, multi-center, open-label, phase III study to evaluate the efficacy of professional oral care in preventing oral mucositis induced by everolimus in postmenopausal ER-positive metastatic breast cancer (MBC). Patients will be randomized into professional oral care and control groups (1:1 ratio). All patients will receive everolimus (10 mg daily) with exemestane (25 mg daily) and will continue everolimus until disease progression. Before the initiation of everolimus, instruction on a professional brushing method will be provided to both groups by specialists. In the professional oral care group, patients will receive teeth surface cleaning, scaling, and tongue cleaning before starting everolimus, and will continue to receive professional oral care weekly from oral surgeons throughout the 8 week treatment. In the control group, patients will brush their own teeth and gargle with 0.9% sodium chloride solution or water. The primary endpoint is the incidence of all grades of oral mucositis. The secondary endpoints are the incidence of over grade 2 and over 3 oral mucositis as determined by an oncologist and oral surgeons. The endpoints include onset and duration of oral mucositis. Major eligibility criteria include: 1) Postmenopausal women with ER positive MBC, and 2) No more than one prior chemotherapy treatment for MBC. Target accrual is 200 patients with a two-sided type I error rate of 5% and 80% power to detect 25% risk reduction. This study has just begun, and 5 of a planned 200 patients have been enrolled. (This study was registered with the UMIN 000016109).
Citation Format: Niikura N, Ohta Y, Hayashi N, Naito M, Kashiwabara K, Watanabe K, Yamashita T, Mukai H, Umeda M. Evaluation of the use of oral care to prevent oral mucositis in estrogen receptor positive metastatic breast cancer patients treated with everolimus: Phase III randomized control trial. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr OT1-03-02.
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Ohta Y. Possible mechanism of BN fullerene formation from a boron cluster: Density-functional tight-binding molecular dynamics simulations. J Comput Chem 2016; 37:886-95. [PMID: 26748592 DOI: 10.1002/jcc.24287] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 11/10/2015] [Accepted: 12/01/2015] [Indexed: 12/20/2022]
Abstract
We simulate the formation of a BN fullerene from an amorphous B cluster at 2000 K by quantum mechanical molecular dynamics based on the density-functional tight-binding method. We run 30 trajectories 200 ps in length, where N atoms are supplied around the target cluster, which is initially an amorphous B36 cluster. Most of the incident N atoms are promptly incorporated into the target cluster to form B-N-B bridges or NB3 pyramidal local substructures. BN fullerene formation is initiated by alternating BN ring condensation. Spontaneous atomic rearrangement and N2 dissociation lead to the construction of an sp(2) single-shelled structure, during which the BN cluster undergoes a transition from a liquid-like to a solid-like state. Continual atomic rearrangement and sporadic N2 dissociation decrease the number of defective rings in the BN cluster and increase the number of six-membered rings, forming a more regular shell structure. The number of four-membered rings tends to remain constant, and contributes to more ordered isolated-tetragon-rule ring placement.
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Dazai M, Yuki S, Muranaka T, Yoshida S, Ohta Y, Hatanaka K, Tsuji Y, Ohta T, Sato A, Eto K, Onodera K, Sato Y, Kato K, Nakamura M, Muto O, Ishiguro A, Tateyama M, Okuda H, Sakata Y, Komatsu Y. 158P A retrospective cohort study evaluating the safety and efficacy of regorafenib in patients with metastatic colorectal cancer; The HGCSG1401 study -first report. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv523.19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Hishikawa N, Fukui Y, Sato K, Kono S, Yamashita T, Ohta Y, Deguchi K, Abe K. Cognitive and affective functions in Alzheimer's disease patients with metabolic syndrome. Eur J Neurol 2015; 23:339-45. [PMID: 26493280 DOI: 10.1111/ene.12845] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Accepted: 08/03/2015] [Indexed: 12/01/2022]
Abstract
BACKGROUND AND PURPOSE The influence of metabolic syndrome (MetS) on cognitive and affective functions in patients with Alzheimer's disease (AD) was examined. METHODS A total of 570 AD patients were divided into two subgroups depending on waist circumference (WC) (normal versus achieving Japanese diagnostic criteria of MetS). Afterwards, the AD control subgroup was defined as those normal WC patients with no vascular risk factors (VRFs). The AD with MetS (AD-MetS) subgroup was defined as the MetS WC group who had two or more VRFs to qualify as having MetS. Cognitive and affective functions, insulin resistance, vascular endothelial function and white matter changes between AD-MetS and AD controls were compared. RESULTS Scores on the Mini-Mental State Examination, Hasegawa Dementia Score-Revised, Frontal Assessment Battery and Montreal Cognitive Assessment were worse in the AD-MetS group than in AD controls, but the difference was not significant. Some analyses were conducted twice, once including all patients and once including only late-elderly patients. Scores on the Geriatric Depression Scale were found to be significantly higher for AD-MetS than for AD controls (all ages, late-elderly), as were those for apathy (late-elderly). Furthermore, both the homeostasis model assessment of insulin resistance and reactive hyperemia index scores were significantly worse in AD-MetS than in AD controls, whilst white matter changes showed a tendency to be worse. CONCLUSIONS Greater cognitive and affective decline occurs in patients with AD-MetS than in those without. Further, insulin resistance and vascular endothelial dysfunction are strongly correlated with AD-MetS before pathological white matter changes can be observed.
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Ohta Y, Yoshida K, Kamiya S, Kawate N, Takahashi M, Inaba T, Hatoya S, Morii H, Takahashi K, Ito M, Ogawa H, Tamada H. Feeding hydroalcoholic extract powder ofLepidium meyenii(maca) increases serum testosterone concentration and enhances steroidogenic ability of Leydig cells in male rats. Andrologia 2015; 48:347-54. [DOI: 10.1111/and.12453] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/31/2015] [Indexed: 11/27/2022] Open
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Yuki S, Komatsu Y, Muranaka T, Yoshida S, Ohta Y, Hatanaka K, Tsuji Y, Kawamoto Y, Yoshizaki K, Sato A, Eto K, Onodera K, Kato S, Nakamura M, Muto O, Abe M, Sato Y, Ishiguro A, Tateyama M, Okuda H, Sakamoto N, Sakata Y. P-271 Retrospective Cohort Study on the Safety and Efficacy of Regorafenib for Metastatic Colorectal Cancer Patients: The HGCSG1401 Study -First Report-. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv233.268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Abstract
Lichen planus annularis is a relatively rare skin manifestation of lichen planus. The mechanisms in the formation of annular lesions are not fully understood. We reported here a 57-year-old female with this disease. The eruption initially occurred as lichen-papules, then enlarged (bean-sized, umbilicated small plaques), and finally developed annular manifestations. We performed immunohistochemical examinations of specimens taken from different types of eruptions. In all specimens, HLA-DR was expressed in the focal keratinocytes adjacent to the dermal HLA-DR positive cell infiltration. Both in the initial papule and in the final annular lesion, expression of ICAM-1 was present only in the keratinocytes above the dermal cell infiltration, similar to HLA-DR. It is of interest that, in the umbilicated small plaques, the peripheral epidermis other than the central site extensively reacted to ICAM-1. LFA-1 expression was most prominent in the mononuclear cells impinging on the dermo-epidermal junction in all specimens. In addition, in the periphery of the umbilicated small plaques, which showed no bandlike dense cell infiltration nor degeneration of basement membrane, TNF-alpha, but not LFA-1, was positive in the infiltrated cells of the upper dermis. These results suggest that expressions of ICAM-1 and TNF-alpha in the peripheral keratinocytes and dermal infiltrated cells are important molecular events in the mechanisms of formation of the annular lesions.
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Abe K, Yamashita T, Hishikawa N, Ohta Y, Deguchi K, Sato K, Matsuzono K, Nakano Y, Ikeda Y, Wakutani Y, Takao Y. A new simple score (ABS) for assessing behavioral and psychological symptoms of dementia. J Neurol Sci 2015; 350:14-7. [DOI: 10.1016/j.jns.2015.01.029] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 12/28/2014] [Accepted: 01/22/2015] [Indexed: 10/24/2022]
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Nakao N, Kaneda H, Tsushima N, Ohta Y, Tanaka M. Characterization of primary structure and tissue expression profile of the chicken apical sodium-dependent bile acid transporter mRNA. Poult Sci 2015; 94:722-7. [PMID: 25681609 DOI: 10.3382/ps/pev027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The ileal apical sodium-dependent bile acid cotransporter (ASBT) plays an essential role in the absorption of bile acids from intestinal lumina. ASBT cDNA has been cloned from mammalian and fish species, and the primary structure of the protein and expression properties of the mRNA have been characterized. In this study, we identified chicken ASBT mRNA by cDNA cloning. Chicken ASBT cDNA consisted of 91 bp of the 5'-untranslated region, 1,083 bp of the coding region, and 1,896 bp of the 3'-untranslated region. The cDNA encoded a protein of 360 amino acids showing significant sequence identity with mammalian and fish ASBT. The amino acid residues known to participate in the functions of mammalian ASBT were conserved in chicken ASBT. Real-time polymerase chain reaction analysis revealed that chicken ASBT mRNA was expressed at markedly higher levels in the ileum and proximal colon/rectum, relatively lower levels in the kidney, and very low levels in the jejunum and cecum. Expression levels in the ileum markedly increased after hatching, reached the highest levels on day 7 posthatching, and then decreased to adult levels. A similar expression pattern was observed in the proximal colon/rectum except for the significant decrease from day 7 posthatching to day 21 posthatching. These results suggest that chicken ASBT functions as a bile acid transporter in the ileum and proximal colon/rectum, particularly during the early posthatching period.
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Ohta Y, Sakuma M, Bates D, Morimoto T. Epidemiology of operation-related medical errors in inpatients in Japan: the JET study. Crit Care 2015. [PMCID: PMC4470925 DOI: 10.1186/cc14578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Ishikawa K, Fukamizu H, Takiguchi T, Ohta Y, Tokura Y. Application of a three-microneedle device for the delivery of local anesthetics. Patient Prefer Adherence 2015; 9:585-8. [PMID: 25960640 PMCID: PMC4410905 DOI: 10.2147/ppa.s76540] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
PURPOSE We investigated the effectiveness of a newly developed device for the delivery of local anesthetics in the treatment of axillary osmidrosis and hyperhidrosis. We developed a device with three fine, stainless steel needles fabricated with a bevel angle facing outside ("three-microneedle device" [TMD]) to release a drug broadly and homogeneously into tissue in the horizontal plane. Use of this device could reduce the risk of complications when transcutaneous injections are undertaken. PATIENTS AND METHODS Sixteen Japanese patients were enrolled. The mean volume of lidocaine hydrochloride per unit area needed to elicit anesthesia when using a TMD was compared with that the volume required when using a conventional 27-gauge needle. The visual analog scale (VAS) score of needlestick pain and injection-associated pain was also compared. RESULTS The mean volume of lidocaine hydrochloride per unit area to elicit anesthesia using the TMD was significantly lower than that the volume required when using the conventional 27-gauge needle. The VAS score of needlestick pain for the TMD was significantly lower than that the VAS score for the 27-gauge needle. CONCLUSION These data suggest that the TMD could be useful for the delivery of local anesthetics in terms of clinical efficacy and avoidance of adverse effects.
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Ohta Y, Sakuma M, Koike K, Bates DW, Morimoto T. Influence of adverse drug events on morbidity and mortality in intensive care units: the JADE study. Int J Qual Health Care 2014; 26:573-8. [DOI: 10.1093/intqhc/mzu081] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Inose T, Tanaka D, Tanaka H, Ivasenko O, Nagata T, Ohta Y, De Feyter S, Ishikawa N, Ogawa T. Cover Picture: Switching of Single-Molecule Magnetic Properties of Tb III-Porphyrin Double-Decker Complexes and Observation of Their Supramolecular Structures on a Carbon Surface (Chem. Eur. J. 36/2014). Chemistry 2014. [DOI: 10.1002/chem.201490150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Inose T, Tanaka D, Tanaka H, Ivasenko O, Nagata T, Ohta Y, Feyter SD, Ishikawa N, Ogawa T. Switching of Single-Molecule Magnetic Properties of TbIII-Porphyrin Double-Decker Complexes and Observation of Their Supramolecular Structures on a Carbon Surface. Chemistry 2014. [DOI: 10.1002/chem.201403984] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Inose T, Tanaka D, Tanaka H, Ivasenko O, Nagata T, Ohta Y, De Feyter S, Ishikawa N, Ogawa T. Switching of Single-Molecule Magnetic Properties of TbIII-Porphyrin Double-Decker Complexes and Observation of Their Supramolecular Structures on a Carbon Surface. Chemistry 2014; 20:11362-9. [DOI: 10.1002/chem.201402669] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Indexed: 11/07/2022]
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Yamasaki Y, Fukumoto I, Kumagai N, Ohta Y, Nakagawa T, Kawamukai M, Matsuda H. Continuous Chitosan Hydrolyzate Production by Immobilized Chitosanolytic Enzyme fromEnterobactersp. G-1. Biosci Biotechnol Biochem 2014; 56:1546-51. [PMID: 1369055 DOI: 10.1271/bbb.56.1546] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Chitosanolytic enzymes from Enterobacter sp. G-1 were immobilized on various carriers to continuously hydrolyze chitosan. Four different carriers were tested: FE-3901 (strong basic anion exchange resin, ionic binding), glutaraldehyde-treated FE-4612 (weak basic anion exchange resin, cross-linking), Chitopearl (chitosan beads), and alginate calcium. Glutaraldehyde-treated FE-4612 and Chitopearl immobilized more protein than the others. The enzyme immobilized on FE-3901 had the greatest activity. The activity of enzyme immobilized on FE-3901 decreased rapidly when exposed to a continuous flow of 1% chitosan. The enzyme immobilized with Chitopearl retained more than 50% of its original activity after 17 days, and the activity was fully restored by re-immobilization.
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Ejima S, Kaneko T, Ohta Y, Fehske H. Order, criticality, and excitations in the extended Falicov-Kimball model. PHYSICAL REVIEW LETTERS 2014; 112:026401. [PMID: 24484030 DOI: 10.1103/physrevlett.112.026401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Indexed: 06/03/2023]
Abstract
Using exact numerical techniques, we investigate the nature of excitonic (electron-hole) bound states and the development of exciton coherence in the one-dimensional half-filled extended Falicov-Kimball model. The ground-state phase diagram of the model exhibits, besides band-insulator and staggered orbital ordered phases, an excitonic insulator (EI) with power-law correlations. The criticality of the EI state shows up in the von Neumann entropy. The anomalous spectral function and condensation amplitude provide the binding energy and coherence length of the electron-hole pairs which, on their part, point towards a Coulomb interaction driven crossover from BCS-like electron-hole pairing fluctuations to tightly bound excitons. We show that while a mass imbalance between electrons and holes does not affect the location of the BCS-BEC crossover regime, it favors staggered orbital ordering to the disadvantage of the EI. Within the Bose-Einstein condensation (BEC) regime, the quasiparticle dispersion develops a flat valence-band top, in accord with the experimental finding for Ta2NiSe5.
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Matsumura K, Arima H, Tominaga M, Ohtsubo T, Sasaguri T, Fujii K, Fukuhara M, Uezono K, Morinaga Y, Ohta Y, Otonari T, Kawasaki J, Kato I, Tsuchihashi T. Impact of antihypertensive medication adherence on blood pressure control in hypertension: the COMFORT study. QJM 2013; 106:909-14. [PMID: 23696676 DOI: 10.1093/qjmed/hct121] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND It has not been fully elucidated whether antihypertensive medication adherence affects blood pressure (BP) control in hypertension cases. AIM To investigate the association of adherence to antihypertensive drug regimens and BP control using data from the Combination Pill of Losartan Potassium and Hydrochlorothiazide for Improvement of Medication Compliance Trial (COMFORT) study. DESIGN An observational analysis from a randomized controlled trial. METHODS A total of 203 hypertensive subjects were randomly assigned to a daily regimen of a combination pill (losartan 50 mg/hydrochlorothiazide 12.5 mg) or two pills, an angiotensin II receptor blocker and a thiazide diuretic. Medication adherence calculated based on pill counts and BPs was evaluated at 1, 3 and 6 months after randomization. RESULTS The subjects were divided into three groups according to their adherence, i.e. relatively low-adherence (<90%; n = 19), moderate-adherence (90-99%; n = 71) and high-adherence (100%; n = 113) groups. Clinical characteristics of the subjects including BP, sex, randomized treatments and past medical history did not differ significantly among the three groups. Achieved follow-up BPs over the 6-month treatment period, which were adjusted for age, sex, baseline BP and randomized treatment, were significantly higher in the low-adherence group (135/78 mmHg) compared with the high-adherence (130/74 mmHg; P = 0.02/0.02) and the moderate-adherence (128/74 mmHg; P = 0.003/0.02) groups. CONCLUSION Low adherence to an antihypertensive-drug regimen was associated with poor BP control.
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Tanaka M, Nakao N, Yamamoto I, Tsushima N, Ohta Y. Changes in expression levels of neurotensin precursor and receptor mRNA in chicken intestinal tissues and liver during late embryonic and early posthatching development. Poult Sci 2013; 92:2765-71. [DOI: 10.3382/ps.2012-02939] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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Chen CH, White JL, Ohta Y. A Fundamental Experimental Study of the Mechanisms of Warpage and Shrinkage of Polyethylene in Rotational Molding. INT POLYM PROC 2013. [DOI: 10.3139/217.910212] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
An off-line experimental simulation of cooling and warpage of rotationally molded parts is described. Slabs of polyethylene rotationally molded parts containing thermocouples and monitored by displacement transducers are placed on a metal surface representing a mold wall. This is cooled by varying methods such as simulated water showers, fan blown air, and natural convection cooling. Temperature profiles in the mold wall and through the polymer are determined as a function of time. The position of crystallization and the development of warpage are observed. Warpage is attributed to thermal quench stresses and release of the polymer from the mold surface.
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Iwakura K, Ohta Y, Chen CH, White JL. Experimental Investigation of Rotational Molding and the Characterization of Rotationally Molded Polyethylene-Parts. INT POLYM PROC 2013. [DOI: 10.3139/217.890163] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
An experimental study of the rotational molding of polyethylene parts is presented. Specific attention is given to heating and cooling of the molding cycle and to the micro structuring and bulk characteristics. Experimental measurements of the heatup of the oven at the startup of the process is presented. The heatup of different molds in the oven is then measured and interpreted in terms of heat conduction theory and the Fourier number αt/L2. In the experiments, thick aluminium molds heated up more slowly than thinner steel molds. The cooling characteristics of mold subject to different quenching conditions were compared with water showers inducing the most rapid cooling followed by fan blowing and the slowest being in quiescent air. The order of cooling of the different molds studied followed the same order as their rates of heating as would be expected from the theory of heat conduction. Polyethylene parts formed in the molds were found to be crystalline, without orientation and to possess large spherulites. The size of the spherulites and the level of the crystallinity was highest where the cooling rate was the lowest. Uniformity of part thickness and warpage were measured. Warp age correlated with rapidity of cooling rate. This suggested a mechanism of thermal quench stresses.
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Ohta Y, Sakuma M, Bates D, Morimoto T. Influence of adverse drug events on the mortality and the length of hospital stay in ICUs in Japan: the JADE Study. Crit Care 2013. [PMCID: PMC3643173 DOI: 10.1186/cc12448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Obata S, Matsuo M, Ohta Y, Kan T, Kanegae S, Inoue Y, Kuroiwa A, Yamaguchi H. EP-1095: Salvage intensity-modulated radiation therapy for PSA failure after prostatectomy. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)33401-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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78
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Abe K, Ikeda Y, Kurata T, Ohta Y, Manabe Y, Okamoto M, Takamatsu K, Ota T, Takao Y, Shiro Y, Shoji M, Kamiya T, Kobayashi H, Koizumi A. 760 – Cognitive and affective impairments of a novel sca/mnd crossroad mutation asidan. Eur Psychiatry 2013. [DOI: 10.1016/s0924-9338(13)75967-4] [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: 11/26/2022] Open
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79
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Ohta Y, Kawano Y, Iwashima Y, Hayashi S, Yoshihara F, Nakamura S. Effect of bezafibrate on office, home and ambulatory blood pressure in hypertensive patients with dyslipidemia. J Hum Hypertens 2012; 27:417-20. [PMID: 23254592 DOI: 10.1038/jhh.2012.64] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
It has been suggested that fibrates, lipid-lowering agents with a peroxisome proliferator-activated receptor-α agonistic property, lower blood pressure (BP) in some experimental models of hypertension. However, the effect of fibrates on BP in humans has been inconsistent, and there are few studies using home or ambulatory BP monitoring. We investigated the effects of bezafibrate on office, home and ambulatory BP in hypertensive patients with dyslipidemia. Thirty-two essential hypertensive patients with dyslipidemia (6 men and 26 women, mean age 65±8 years old) were assigned to a control period and a bezafibrate period (200 mg twice daily) for 8 weeks each in a randomized crossover manner. Bezafibrate significantly reduced serum triglyceride, total and low-density lipoprotein-cholesterol, blood glucose, plasma insulin, the homeostasis model assessment ratio and increased high-density lipoprotein-cholesterol. Compared with the control period, changes in office, home and 24-h BP with bezafibrate were -0.7±2.1/-1.6±1.2 mm Hg, +0.9±1.0/-0.5±0.6 and +0.8±1.4/-0.6±0.9 mm Hg, respectively. None of these differences in BP was significant. In conclusion, bezafibrate improved lipid metabolism and insulin sensitivity but did not affect office, home or ambulatory BP in hypertensive patients with dyslipidemia. Fibrates do not appear to lower BP in patients with essential hypertension.
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80
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Shiraishi S, Ohta Y, Tagami T, Ono Y, Masuno T, Yokota H. Usefulness of a Bispectral index oriented sedative method without neuromuscular blocker for therapeutic hypothermia after cardiac arrest. Crit Care 2012. [PMCID: PMC3363704 DOI: 10.1186/cc10893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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81
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Ohta Y, Shiraishi S, Ono Y, Matsumoto G, Tagami T, Masuno T, Yokota H. Predictive factors of neurologic outcome in therapeutic hypothermia after prehospital return of spontaneous circulation. Crit Care 2012. [PMCID: PMC3363705 DOI: 10.1186/cc10894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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82
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Takamiya M, Miyamoto Y, Yamashita T, Deguchi K, Ohta Y, Abe K. Strong neuroprotection with a novel platinum nanoparticle against ischemic stroke- and tissue plasminogen activator-related brain damages in mice. Neuroscience 2012; 221:47-55. [DOI: 10.1016/j.neuroscience.2012.06.060] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Revised: 06/24/2012] [Accepted: 06/25/2012] [Indexed: 12/20/2022]
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83
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Nishimoto S, Ohta Y. Double exchange ferromagnetism in the Peierls insulator state. PHYSICAL REVIEW LETTERS 2012; 109:076401. [PMID: 23006387 DOI: 10.1103/physrevlett.109.076401] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Indexed: 06/01/2023]
Abstract
We study the effects of opening the band gap on the double exchange ferromagnetism. Applying the density-matrix renormalization group method and an analytical expansion from the dimer limit to the one-dimensional double exchange model, we demonstrate for a relevant region of the exchange coupling that, in the weak dimerization regime, the Peierls gap opens in the fully spin-polarized conduction band without affecting its ferromagnetism, whereas in the strong dimerization regime, the ferromagnetism is destroyed, and the Mott gap opens instead, leading the system to the antiferromagnetic quasi-long-range order. An insulator version of double exchange ferromagnetism is thus established.
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84
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Ikeda Y, Ohta Y, Kobayashi H, Okamoto M, Takamatsu K, Ota T, Manabe Y, Okamoto K, Koizumi A, Abe K. Clinical features of SCA36: A novel spinocerebellar ataxia with motor neuron involvement (Asidan). Neurology 2012; 79:333-41. [DOI: 10.1212/wnl.0b013e318260436f] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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85
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Obata S, Ohta Y, Kan T, Kanegae S, Inoue Y, Matsuo M, Hakariya T. EP-1091 SIMULTANOUS INTEGRATED BOOST USING INTENSITY MODULATED RADIATION THERAPY FOR HORMONE RESISTANT PROSTATE CANCER. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)71424-x] [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]
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86
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Saeki Y, Kudo-Tanaka E, Ohshima S, Matsushita M, Tsuji SI, Maeda YI, Yoshimura M, Watanabe A, Katada Y, Harada Y, Ichikawa K, Suenaga Y, Ohta Y, Tohma S. Baseline anti-citrullinated peptide antibody (ACPA) titers and serum interleukin-6 (IL-6) levels possibly predict progression of bone destruction in early stages of rheumatoid arthritis (ERA). Rheumatol Int 2012; 33:451-6. [DOI: 10.1007/s00296-012-2397-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2011] [Accepted: 03/11/2012] [Indexed: 10/28/2022]
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87
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Abe K, Ikeda Y, Kurata T, Ohta Y, Manabe Y, Okamoto M, Takamatsu K, Ohta T, Takao Y, Shiro Y, Shoji M, Kamiya T, Kobayashi H, Koizumi A. Cognitive and affective impairments of a novel SCA/MND crossroad mutation Asidan. Eur J Neurol 2012; 19:1070-8. [DOI: 10.1111/j.1468-1331.2012.03669.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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88
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Ohta Y, Nishi S, Haga T, Tsubouchi T, Hasegawa R, Konishi M, Nagano Y, Tsuruwaka Y, Shimane Y, Mori K, Usui K, Suda E, Tsutsui K, Nishimoto A, Fujiwara Y, Maruyama T, Hatada Y. Screening and Phylogenetic Analysis of Deep-Sea Bacteria Capable of Metabolizing Lignin-Derived Aromatic Compounds. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/ojms.2012.24021] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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89
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Toriyama T, Nakao A, Yamaki Y, Nakao H, Murakami Y, Hasegawa K, Isobe M, Ueda Y, Ushakov AV, Khomskii DI, Streltsov SV, Konishi T, Ohta Y. Peierls mechanism of the metal-insulator transition in ferromagnetic hollandite K2Cr8O16. PHYSICAL REVIEW LETTERS 2011; 107:266402. [PMID: 22243170 DOI: 10.1103/physrevlett.107.266402] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2010] [Revised: 09/27/2011] [Indexed: 05/31/2023]
Abstract
Synchrotron x-ray diffraction experiment shows that the metal-insulator transition occurring in a ferromagnetic state of a hollandite K(2)Cr(8)O(16) is accompanied by a structural distortion from the tetragonal I4/m to monoclinic P112(1)/a phase with a √2×√2×1 supercell. Detailed electronic structure calculations demonstrate that the metal-insulator transition is caused by a Peierls instability in the quasi-one-dimensional column structure made of four coupled Cr-O chains running in the c direction, leading to the formation of tetramers of Cr ions below the transition temperature. This provides a rare example of the Peierls transition of fully spin-polarized electron systems.
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90
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Katayama K, Sato T, Arai T, Amao H, Ohta Y, Ozawa T, Kenyon PR, Hickson RE, Tazaki H. Non-targeted analyses of animal plasma: betaine and choline represent the nutritional and metabolic status. J Anim Physiol Anim Nutr (Berl) 2011; 97:119-25. [DOI: 10.1111/j.1439-0396.2011.01250.x] [Citation(s) in RCA: 4] [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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91
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Okazawa M, Masuhara K, Miyoshi A, Fujiwara K, Ohta Y, Yoshino K, Kamiura S, Tomita Y. A rare case of ovarian carcinosarcoma successfully treated with the neoadjuvant chemotherapy of paclitaxel and ifosfamide. J OBSTET GYNAECOL 2011; 31:274-5. [PMID: 21417665 DOI: 10.3109/01443615.2010.549971] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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92
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Nishiyama K, Ohta Y, Matsuda N, Fujimoto R, Koike K. Back pain after wild mushroom consumption. Emerg Med J 2011; 27:61. [PMID: 20029016 DOI: 10.1136/emj.2008.066803] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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93
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Obata S, Takatsuki H, Ohta Y, Kan T, Kanegae S, Inoue Y, Matsuo M. 1025 poster INTENSITY MODULATED RADIATION THERAPY FOR PROSTATE CANCER. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)71147-1] [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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94
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Sato T, Toyoshima A, Hiraki T, Ohta Y, Katayama K, Arai T, Tazaki H. Effects of metformin on plasma concentrations of glucose and mannose, G6Pase and PEPCK activity, and mRNA expression in the liver and kidney of chickens. Br Poult Sci 2011; 52:273-7. [DOI: 10.1080/00071668.2011.560595] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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95
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Tanaka K, Sonoo H, Saito W, Ohta Y, Shimo T, Sohda M, Yamamoto Y, Kurebayashi J. Analysis of clinical outcome of patients with poorly differentiated thyroid carcinoma. ISRN ENDOCRINOLOGY 2011; 2011:308029. [PMID: 22363874 PMCID: PMC3262634 DOI: 10.5402/2011/308029] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Accepted: 02/06/2011] [Indexed: 11/23/2022]
Abstract
Background. We retrospectively analyzed whether poor differentiation is the independent prognostic factor for thyroid carcinoma or not. Methods. The subjects were 29 patients with PDTC who were treated between April 1996 and March 2006 to compare with those of well-differentiated papillary carcinoma patients (n = 227). Results. The relapse free (RFS), distant relapse-free survival and cause-specific survival, rates were significantly lower in patients with PDTC (P < .0001, P < .001, and P < .05). After classification into focal (<10%) and diffuse type (over 10%) of PDTC, there were no significant differences in RFS and cause-specific survival due to component type or proportion of poorly differentiated component. On multivariate analysis, poor differentiation (P < .0005, RR = 4.456, 95% CI; 1.953–10.167) and extrathyroidal infiltration (P < .05, RR = 2.898, 95% CI; 1.278–6.572) showed a significant impact on DFS, and poor differentiation (P < .05, RR = 9.343, 1.314–66.453) and age (P < .005, RR = 1.306, 1.103–1.547) significantly impacted cause-specific survival. Conclusion. Poor differentiation was an independent factor for survival. Distant relapse was significantly more common among PDTC patients, and systemic therapy might be warranted.
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Futagi T, Matsumoto T, Katsuno M, Ohta Y, Mimura H, Kitamura K. Visible Electroluminescence from Pn Junction Type μc-Sic/ Porous Si / c-Si Structures. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-283-389] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTWe have fabricated two kinds of n-type microcrystalline silicon carbon (μc-SiC) / porous silicon (PS) / p-type crystalline silicon (c-Si) pn junctions and demonstrated a visible light emission from them. We have observed three types of visible light emission; an uniform red light emission at a forward current above 12mA/cm2 for the pn junction using a 0.2–0.4 Qcm c-Si substrate, and a very weak white light emission at a forward current of about 90 mA/mm2 and a strong orange-red light emission at a forward current from 200 to 619 mA/mm2for the pn junction using a 3.5–4.5 Ωcm c-Si substrate.
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97
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Yoshino K, Ohta Y, Takezawa K, Kinouchi T, Kamiura S. Bladder cancer co-existing with ovarian cancer coincidentally detected by transvaginal ultrasonography. J OBSTET GYNAECOL 2011; 31:196-7. [PMID: 21281051 DOI: 10.3109/01443615.2010.529519] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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98
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Uemura T, Yanai N, Watanabe S, Tanaka H, Numaguchi R, Miyahara MT, Ohta Y, Nagaoka M, Kitagawa S. Unveiling thermal transitions of polymers in subnanometre pores. Nat Commun 2010; 1:83. [PMID: 20981011 PMCID: PMC2982181 DOI: 10.1038/ncomms1091] [Citation(s) in RCA: 121] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2010] [Accepted: 09/09/2010] [Indexed: 11/17/2022] Open
Abstract
The thermal transitions of confined polymers are important for the application of polymers in molecular scale devices and advanced nanotechnology. However, thermal transitions of ultrathin polymer assemblies confined in subnanometre spaces are poorly understood. In this study, we show that incorporation of polyethylene glycol (PEG) into nanochannels of porous coordination polymers (PCPs) enabled observation of thermal transitions of the chain assemblies by differential scanning calorimetry. The pore size and surface functionality of PCPs can be tailored to study the transition behaviour of confined polymers. The transition temperature of PEG in PCPs was determined by manipulating the pore size and the pore–polymer interactions. It is also striking that the transition temperature of the confined PEG decreased as the molecular weight of PEG increased. Understanding the thermal transitions of confined polymers is important for the design of molecular scale devices. In this study, unusual thermal transitions are observed in polyethylene glycol chains incorporated in nanochannels of porous coordination polymers.
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99
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Ohta Y, Tokimizu Y, Oishi S, Fujii N, Ohno H. Direct Synthesis of Quinazolines through Copper-Catalyzed Reaction of Aniline-Derived Benzamidines. Org Lett 2010; 12:3963-5. [PMID: 20795747 DOI: 10.1021/ol1016756] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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100
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