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Fukui M, Tanaka M, Toda H, Asano M, Yamazaki M, Hasegawa G, Nakamura N. Low serum potassium concentration is a predictor of chronic kidney disease. Int J Clin Pract 2014; 68:700-4. [PMID: 24905447 DOI: 10.1111/ijcp.12367] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
AIMS The aim of this study was to examine whether low serum potassium concentration could be a predictor of chronic kidney disease (CKD) in a community-based cohort. MATERIALS AND METHODS We enrolled 1001 subjects, median period of 5.7 years, and evaluated the risk factors for CKD, defined as estimated glomerular filtration rate (eGFR) < 60 ml/min/1.73 m(2), and assessed whether low serum potassium concentration could predict CKD. RESULTS Compared with the subjects without development of CKD, age, body mass index, fasting plasma glucose, uric acid (UA), creatinine and serum sodium concentration were higher, and serum potassium concentration was lower in subjects with development of CKD. Univariate Cox regression analyses demonstrated that age, body mass index, fasting plasma glucose, UA, creatinine, serum sodium concentration and serum potassium concentration were associated with progression of CKD. Multiple Cox regression analysis revealed that age, gender, creatinine and serum potassium concentration were independent predictors of CKD after adjustment for covariates. When serum potassium concentration was below 4.0 mmol/l at baseline, hazard ratio (95% confidence interval) of developing CKD was 2.65 (2.04-3.44; p < 0.0001). CONCLUSIONS Serum potassium concentration could be a clinically relevant risk factor for the progression of CKD, defined as eGFR < 60 ml/min/1.73 m(2) , in healthy subjects.
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Yamasaki T, Horie S, Tanaka E, Nakamura N, Ohyagi Y, Kanba S, Kira JI, Tobimatsu S. P61: Higher level but not lower level parallel visual pathways are functionally altered in patients with mild cognitive impairment. Clin Neurophysiol 2014. [DOI: 10.1016/s1388-2457(14)50221-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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103
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Sakai T, Koyanagi M, Nakae N, Kimura Y, Sanada Y, Nakamura N, Nakata K. EVALUATION OF A NEW QUADRICEPS STRENGTHENING EXERCISE FOR THE PREVENTION OF SECONDARY CARTILAGE INJURY IN PATIENTS WITH PCL INSUFFICIENCY: COMPARISON OF TIBIAL MOVEMENT IN PRONE AND SITTING POSITIONS DURING THE EXERCISE. Br J Sports Med 2014. [DOI: 10.1136/bjsports-2014-093494.257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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104
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Nakamura N, Katoh H, Teramoto Y. Mathematical approach for the dynamic testing technique. ACTA ACUST UNITED AC 2014. [DOI: 10.1007/bf02546895] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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105
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Ochiai T, Shioya A, Honma H, Saitoh Y, Matsumura S, Ban D, Irie T, Kudo A, Nakamura N, Fujikawa T, Itai A, Tanaka S, Arii S, Yamaoka S, Tanabe M. Combination Treatment of IκB Kinase β Inhibitor IMD-0354 and Gemcitabine Suppresses Oncogenic Proliferation of Pancreatic Cancer Cells. J Surg Res 2014. [DOI: 10.1016/j.jss.2013.11.157] [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]
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106
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Nakamura N, Tsurumi H, Shibata Y, Mabuchi R, Kitagawa J, Suetsugu A, Kanemura N, Goto N, Hara T, Moriwaki H. Garenoxacin Prophylaxis for Febrile Neutropenia After Chemotherapy in Hematological Malignancies. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt459.17] [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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107
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Nakamura N, Matsubara K, Sanoh S, Ohta S, Uramaru N, Kitamura S, Yamaguchi M, Sugihara K, Fujimoto N. Cell type-dependent agonist/antagonist activities of polybrominated diphenyl ethers. Toxicol Lett 2013; 223:192-7. [DOI: 10.1016/j.toxlet.2013.09.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 09/09/2013] [Accepted: 09/11/2013] [Indexed: 11/15/2022]
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108
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Nakamura N, Ito R, Takahashi O, Haga C, Shikama N, Akahane K, Ogita M, Mizuno N, Tamaki S, Sekiguchi K. Fatigue During Breast Radiation Therapy and its Predictive Factors. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.529] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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109
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Kato T, Nakamura N, Masuda Y, Yoshida A, Morimoto T, Yamamura K, Yamashita S, Sato F. Phasic bursts of the antagonistic jaw muscles during REM sleep mimic a coordinated motor pattern during mastication. J Appl Physiol (1985) 2012. [PMID: 23195628 DOI: 10.1152/japplphysiol.00895.2012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Sleep-related movement disorders are characterized by the specific phenotypes of muscle activities and movements during sleep. However, the state-specific characteristics of muscle bursts and movement during sleep are poorly understood. In this study, jaw-closing and -opening muscle electromyographic (EMG) activities and jaw movements were quantified to characterize phenotypes of motor patterns during sleep in freely moving and head-restrained guinea pigs. During non-rapid eye movement (NREM) sleep, both muscles were irregularly activated in terms of duration, activity, and intervals. During rapid eye movement (REM) sleep, clusters of phasic bursts occurred in the two muscles. Compared with NREM sleep, burst duration, activity, and intervals were less variable during REM sleep for both muscles. Although burst activity was lower during the two sleep states than during chewing, burst duration and intervals during REM sleep were distributed within a similar range to those during chewing. A trigger-averaged analysis of muscle bursts revealed that the temporal association between the bursts of the jaw-closing and -opening muscles during REM sleep was analogous to the temporal association during natural chewing. The burst characteristics of the two muscles reflected irregular patterns of jaw movements during NREM sleep and repetitive alternating bilateral movements during REM sleep. The distinct patterns of jaw muscle bursts and movements reflect state-specific regulations of the jaw motor system during sleep states. Phasic activations in the antagonistic jaw muscles during REM sleep are regulated, at least in part, by the neural networks involving masticatory pattern generation, demonstrating that waking jaw motor patterns are replayed during sleep periods.
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Dan S, Isoyama S, Nishimura Y, Kajiwara G, Nakamura N, Yamori T. 370 Identification of IGF1R as a Predictive Biomarker for Intrinsic Resistance to PI3K Inhibitors and a Therapeutic Target for Improving the Drug Efficacy. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)72168-8] [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]
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111
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Isoyama S, Dan S, Nishimura Y, Kajiwara G, Nakamura N, Irimura T, Yamori T. 148 Establishment of PI3K Inhibitor-resistant Cancer Cell Lines and the Therapeutic Strategies for Overcoming the Acquired Resistance. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)71946-9] [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]
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112
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Ito T, Seyama T, Hayashi Y, Hayashi T, Dohi K, Mizuno T, Iwamoto K, Tsuyama N, Nakamura N, Akiyama M. Establishment of 2 human thyroid-carcinoma cell-lines (8305c, 8505c) bearing p53 gene-mutations. Int J Oncol 2012; 4:583-6. [PMID: 21566963 DOI: 10.3892/ijo.4.3.583] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
New cell lines, designated 8305C and 8505C, were established from undifferentiated thyroid carcinomas of a 67 year-old-female patient and a 78-year-old-female patient, respectively. Pathologically both these primary undifferentiated carcinoma tissues contained residual well differentiated components, suggesting well differentiated to undifferentiated carcinoma progression. Cell kinetic analysis indicate that the cell population doubling time is 43 h for 8305C and 36 h for 8505C. The saturation density at confluency is 5.7 x 10(4) cells/cm2 for 8305C and 1.1 x 10(5) cells/cm2 for 8505C. To identify genetic changes that may have occurred in these two cell lines, tumor suppressor genes p53, Rb, APC and MCC were analyzed. Sequence analysis confirmed a C:G to T:A transition at the first base of p53 gene codon 273 in 8305C and a C:G to G:C transversion at the first base of p53 codon 248 in 8505C. Polymerase chain reaction-loss of heterozygosity assays confirmed allelic deletion of p53 gene from the 8505C cell line. Loss of heterozygosity of other tumor suppressor genes were not observed. Given that p53 mutations associate with undifferentiated carcinoma but not with well differentiated carcinoma during multistep carcinogenesis of the thyroid, these cell lines should prove useful for research into the role of p53 gene mutations in malignant transformation.
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Mauchi R, Goto N, Tsurumi H, Hara T, Nakamura N, Nakamura H, Nagano J, Kitagawa J, Kanemura N, Takami T, Moriwaki H. Prognositc Inpact of Tumor-Infiltrating FOXP3+ Regulatory T Cells in Dlbcl Treated with R-CHOP. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32427-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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114
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Fukui M, Tanaka M, Toda H, Okada H, Ohnishi M, Mogami S, Kitagawa Y, Hasegawa G, Yoshikawa T, Nakamura N. Andropausal symptoms in men with Type 2 diabetes. Diabet Med 2012; 29:1036-42. [PMID: 22248017 DOI: 10.1111/j.1464-5491.2012.03576.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS Serum androgen concentration is reported to be low in patients with Type 2 diabetes. There have been no studies comparing andropausal symptoms such as sleep disturbance, depression, erectile dysfunction and lower urinary tract symptoms simultaneously between men with Type 2 diabetes and subjects without diabetes. METHODS We compared andropausal symptom scores such as the Pittsburgh Sleep Quality Index, the Self-Rating Depression Scale, the International Index of Erectile Function and the International Prostate Symptom Score in 296 men with Type 2 diabetes and in 267 subjects without diabetes. Furthermore, we evaluated relationships of andropausal symptom scores to various anthropometric factors and compared andropausal symptom scores according to diabetic complications in men with Type 2 diabetes. RESULTS Andropausal symptom scores such as the Pittsburgh Sleep Quality Index, the Self-Rating Depression Scale, the International Index of Erectile Function and the International Prostate Symptom Score were 4.2 ± 2.6 vs. 5.0 ± 3.3, P<0.01 by unpaired Student's t-test, 34.8 ± 8.2 vs. 38.4 ± 9.3, P<0.0001, 11.5 ± 6.4 vs. 9.9 ± 6.9, P<0.01 and 7.3 ± 6.7 vs. 9.0 ± 7.1, P<0.01 in subjects without diabetes and in patients with diabetes, respectively. The Pittsburgh Sleep Quality Index was higher in patients with neuropathy than without. The Self-Rating Depression Scale was higher in patients with advanced retinopathy. The International Index of Erectile Function was lower in patients with advanced retinopathy and nephropathy. The International Index of Erectile Function was lower and the International Prostate Symptom Score was higher in patients with cardiovascular disease than without. CONCLUSIONS Our data demonstrated that men with Type 2 diabetes have higher prevalence of andropausal symptoms, especially those with diabetic complications.
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Nakamura N, Shikama N. The importance of defining 'uncomplicated bone metastases'. Clin Oncol (R Coll Radiol) 2012; 24:e193. [PMID: 22819307 DOI: 10.1016/j.clon.2012.07.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Accepted: 07/04/2012] [Indexed: 12/25/2022]
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Nakamura N, Sakamoto M, Ogi H, Hirao M. Elastic constants of langasite and alpha quartz at high temperatures measured by antenna transmission acoustic resonance. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2012; 83:073901. [PMID: 22852698 DOI: 10.1063/1.4731657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A method for measuring elastic constants of piezoelectric materials at high temperature up to 1224 K is proposed. It determines all independent elastic constants by measuring resonance frequencies of a rectangular parallelepiped piezoelectric specimen contactlessly using its own piezoelectricity with an antenna. Without using conventional contacting piezoelectric transducers, vibrational sources are excited directly in the specimen by the oscillating electric field. Capability of the method is demonstrated by measuring the elastic constants of langasite at high temperature up to 1224 K, and temperature coefficients of the elastic constants are determined. In addition, elastic constants of alpha quartz are measured at high temperature up to just below the alpha-beta phase transition temperature. Considering the local deformation with temperature increment, an interpretation based on the strain energy reduction is proposed for the unusual temperature dependence of C(66). Furthermore, the internal-friction tensor is measured, and the relationship between the observed anisotropy in internal friction and the structural evolution with temperature increment is discussed.
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Kitagawa Y, Mori Y, Komeda O, Ishii K, Hanayama R, Fujita K, Okihara S, Sekine T, Satoh N, Kurita T, Takagi M, Kawashima T, Kan H, Nakamura N, Kondo T, Fujine M, Azuma H, Motohiro T, Hioki T, Nishimura Y, Sunahara A, Sentoku Y. Fusion using fast heating of a compactly imploded CD core. PHYSICAL REVIEW LETTERS 2012; 108:155001. [PMID: 22587260 DOI: 10.1103/physrevlett.108.155001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Indexed: 05/31/2023]
Abstract
A compact fast core heating experiment is described. A 4-J 0.4-ns output of a laser-diode-pumped high-repetition laser HAMA is divided into four beams, two of which counterilluminate double-deuterated polystyrene foils separated by 100 μm for implosion. The remaining two beams, compressed to 110 fs for fast heating, illuminate the same paths. Hot electrons produced by the heating pulses heat the imploded core, emitting x-ray radiations >20 eV and yielding some 10(3) thermal neutrons.
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118
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Kojima M, Nakazato Y, Kaneko Y, Sugihara S, Masawa N, Nakamura N. Cytological findings of IgG4-related pleural effusion: a case report. Cytopathology 2012; 24:338-40. [PMID: 22335250 DOI: 10.1111/j.1365-2303.2012.00961.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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119
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Tokunaga T, Kawamoto T, Tanaka K, Nakamura N, Hayashi Y, Sasaki K, Kuroda K, Yamamoto T. Growth and structure analysis of tungsten oxide nanorods using environmental TEM. NANOSCALE RESEARCH LETTERS 2012; 7:85. [PMID: 22277084 PMCID: PMC3278358 DOI: 10.1186/1556-276x-7-85] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2011] [Accepted: 01/25/2012] [Indexed: 05/24/2023]
Abstract
WO3 nanorods targeted for applications in electric devices were grown from a tungsten wire heated in an oxygen atmosphere inside an environmental transmission electron microscope, which allowed the growth process to be observed to reveal the growth mechanism of the WO3 nanorods. The initial growth of the nanorods did not consist of tungsten oxide but rather crystal tungsten. The formed crystal tungsten nanorods were then oxidized, resulting in the formation of the tungsten oxide nanorods. Furthermore, it is expected that the nanorods grew through cracks in the natural surface oxide layer on the tungsten wire.
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Uchimura T, Nakamura N, Imasaka T. An ultrashort-duration, high-repetition-rate pulse source for laser ionization/mass spectrometry. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2012; 83:014101. [PMID: 22299968 DOI: 10.1063/1.3675890] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
This paper describes a sample inlet system with several advantages over other pulsed valves, as applied to resonance-enhanced multiphoton ionization/time-of-flight mass spectrometry. The nozzle is based on online concentration by analyte adsorption/laser desorption (online COLD), where a capillary column with a narrowly synthesized tip is employed for sample introduction. The analyte molecules adsorbed at the tip are desorbed by a pulsed laser and are injected into a mass spectrometer as a packet. The online COLD nozzle can produce very short gas pulses on the order of 1 μs. Moreover, this nozzle is capable of operating over a wide range of repetition rates from 1 Hz to 1 kHz. In addition, this nozzle intrinsically possesses several unique characteristics; for instance, it can be heated to very high temperatures and has nearly zero dead volume. Therefore, the present sample introduction technique offers an ideal and versatile nozzle for laser ionization/mass spectrometry.
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Mihashi T, Nakamura N, Yoshida K, Yamaguchi T, Yamauchi Y, Sakata K, Fukuda K, Uchikawa K. Optical Design of Hyperspectral Two-dimensional Display and its Application. J Vis 2011. [DOI: 10.1167/11.15.51] [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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122
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Nakamura N, Tsunoda H, Kikuchi M, Honda S, Shikama N, Akahane K, Hatanaka S, Sekiguchi K. Frequency and Clinical Significance of Previously Undetected Incidental Findings Detected on CT Simulation Scans for Breast Cancer Patients. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1729] [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]
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123
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Nakamura N, Shikama N, Wada H, Harada H, Nozaki M, Nagakura H, Tago M, Oguchi M, Uchida N. Patterns of Practice in Palliative Radiotherapy for Painful Bone Metastases: A Survey in Japan. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1925] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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124
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Nakamura N, Mikami H, Furuya R, Miyajima S, Irie S, Matsuoka H, Tanaka M. UP-01.102 Improved Image Assessment for Intravenous Excretion Urography by Different Speed Injections of Contrast Medium. Urology 2011. [DOI: 10.1016/j.urology.2011.07.654] [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]
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125
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Nakamura N, Aoki Y, Horiuchi H, Furusawa S, Yamanaka HI, Kitamoto T, Matsuda H. Construction of recombinant monoclonal antibodies from a chicken hybridoma line secreting specific antibody. Cytotechnology 2011; 32:191-8. [PMID: 19002980 DOI: 10.1023/a:1008149815908] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The chicken is a useful animal for the development of the specificantibodies against the mammalian conserved proteins. We generated twotypes of recombinant chicken monoclonal antibodies (mAbs), using a phagedisplay technique from a chicken hybridoma HUC2-13 which secreted themAb to the N-terminal of the mammalian prion protein (PrP). Althoughthe mAb HUC2-13 is a useful antibody for the prion research, thehybridoma produces a low level of antibody production. In order to producea large amount of the mAb, we have constructed a single chain fragmentvariable region (scF(V)) mAb by using the variable heavy(V(H)) and light (V(L))genes which were amplified by using the two primer pairs and theflexible linker. The two phage display mAbs (HUC2p3 and HUC2p5)expressed on a M13 filamentous phage and their soluble type mAbs(HUC2s3 and HUC2s5) were reacted with the PrP peptide antigen in theELISA. In the Western blot analysis, the mAbs HUC2p3 and HUC2s3 wereas reactive to PrP(c) from mouse brains as the mAb HUC2-13 was. The nucleotide sequences of V(H) and V(L) genes from HUC2-13 and the two cloneswere identical except for only one residue. These results indicate that themethods presented here provide an effective tool for the improvement ofthe low levels of antibody production in the chicken hybridoma system.
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