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Niibe Y, Yamamoto T, Onishi H, Yamashita H, Katsui K, Matsumoto Y, Oh R, Aoki M, Shintani T, Myojin M, Yamada K, Kobayashi M, Ozaki M, Manabe Y, Yahara K, Nishikawa A, Kakuhara H, Matsuoka Y, Yamamoto K, Fukuda T, Ushijima Y, Ohashi S, Kan T, Kubota S, Inoue T, Yamaguchi N, Takada Y, Nagata K, Suzuki O, Shirai K, Terahara A, Jingu K. MA 09.06 Pulmonary Oligometastases Treated by Stereotactic Body Radiation Therapy (SBRT): A Nationwide Survey of 1,378 Patients. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Musha A, Shirai K, Saitoh J, Abe T, Yokoo S, Chikamatsu K, Ohno T, Nakano T. Forecast Accuracy of Mucositis Using an Oral Mucosal Dose Model in Intensity Modulated Radiation Therapy for Head and Neck. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Shirai K, Saitoh J, Musha A, Abe T, Kobayashi D, Takayasu Y, Shino M, Toyoda M, Chikamatsu K, Yokoo S, Ohno T, Nakano T. Hypofractionated Carbon-Ion Radiation Therapy for Mucosal Malignant Melanoma in Head and Neck. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Agbaje OBA, Wirth R, Morales LFG, Shirai K, Kosnik M, Watanabe T, Jacob DE. Architecture of crossed-lamellar bivalve shells: the southern giant clam ( Tridacna derasa, Röding, 1798). ROYAL SOCIETY OPEN SCIENCE 2017; 4:170622. [PMID: 28989765 PMCID: PMC5627105 DOI: 10.1098/rsos.170622] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Accepted: 08/07/2017] [Indexed: 06/01/2023]
Abstract
Tridacna derasa shells show a crossed lamellar microstructure consisting of three hierarchical lamellar structural orders. The mineral part is intimately intergrown with 0.9 wt% organics, namely polysaccharides, glycosylated and unglycosylated proteins and lipids, identified by Fourier transform infrared spectrometry. Transmission electron microscopy shows nanometre-sized grains with irregular grain boundaries and abundant voids. Twinning is observed across all spatial scales and results in a spread of the crystal orientation angles. Electron backscatter diffraction analysis shows a strong fibre texture with the [001] axes of aragonite aligned radially to the shell surface. The aragonitic [100] and [010] axes are oriented randomly around [001]. The random orientation of anisotropic crystallographic directions in this plane reduces anisotropy of the Young's modulus and adds to the optimization of mechanical properties of bivalve shells.
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Onogi A, Shirai K, Amano T. Investigation of genetic diversity and inbreeding in a Japanese native horse breed for suggestions on its conservation. Anim Sci J 2017; 88:1902-1910. [PMID: 28730713 DOI: 10.1111/asj.12867] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 05/23/2017] [Indexed: 11/30/2022]
Abstract
Because native breeds can serve as genetic resources for adapting to environment changes, their conservation is important for future agroecosystems. Using pedigree analysis, we investigated genetic diversity and inbreeding in Japanese Hokkaido native horses, which have adapted to a cold climate and roughage diet. Genetic diversity was measured as the number of founders and the effective number of founders, ancestors and genomes. All metrics imply a decrease in genetic diversity. A comparison of these metrics suggested that pedigree bottlenecks contributed more than did random gene losses to the reduction of genetic diversity. Estimates of marginal contributions of ancestors suggest that the bottlenecks arose mainly because related stallions had been used for breeding. A tendency for an increase in inbreeding coefficients was observed. F-statistics revealed that a small effective population size majorly contributed to this increase, although non-random mating in particular regions also contributed. Because the bottlenecks are thought to have reduced the effective population size, our results imply that mitigation of bottlenecks is important for conservation. To this end, breeding should involve genetically diverse stallions. In addition, to prevent non-random mating observed in particular regions, efforts should be made to plan mating with consideration of kinships.
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Saito-Kokusho T, Shirai K, Oksanen T, Pentti J, Vahtera J. INFLUENCE OF EDUCATION ON ASSOCIATION BETWEEN MARRIAGE AND MORTALITY: A CROSS-NATIONAL STUDY. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1838] [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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Komaya K, Ebata T, Shirai K, Ohira S, Morofuji N, Akutagawa A, Yamaguchi R, Nagino M. Recurrence after resection with curative intent for distal cholangiocarcinoma. Br J Surg 2017; 104:426-433. [PMID: 28138968 DOI: 10.1002/bjs.10452] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 10/16/2016] [Accepted: 11/04/2016] [Indexed: 12/11/2022]
Abstract
BACKGROUND Few studies have been conducted on patterns of recurrence after resection for distal cholangiocarcinoma (DCC). The aim of this study was to investigate the incidence and pattern of recurrence after resection of DCC, and to evaluate prognostic factors for time to recurrence and recurrence-free survival (RFS). METHODS Patients who underwent pancreatoduodenectomy with curative intent for DCC between 2001 and 2010 at one of 30 hospitals in Japan were reviewed retrospectively, with special attention to recurrence patterns. The Cox proportional hazards model was used for multivariable analysis. RESULTS In the study interval, 389 patients underwent pancreatoduodenectomy for DCC with R0/M0 status. Recurrence developed in 213 patients (54·8 per cent). The estimated cumulative probability of recurrence was 54·3 per cent at 5 years. An initial locoregional recurrence occurred in 55 patients (14·1 per cent) and initial distant recurrence in 168 (43·2 per cent), most commonly in the liver. Isolated initial locoregional recurrence occurred in 45 patients (11·6 per cent). Independent prognostic factors for time to recurrence and RFS were perineural invasion (P = 0·001 and P = 0·009 respectively), pancreatic invasion (both P < 0·001) and lymph node metastasis (both P < 0·001). RFS worsened as the number of risk factors increased: the 5-year RFS rate was 70·6 per cent for patients without any risk factors, 50·3 per cent for patients with one factor, 31·8 per cent for those with two factors, and 13·4 per cent when three factors were present. CONCLUSION More than half of patients with DCC experienced recurrence after R0 resection, usually within 5 years. Perineural invasion, pancreatic invasion and positive nodal involvement are risk factors for recurrence.
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Shirai K, Kaji S, Kawanami T, Hirasawa S. Development of Measurement System Using Evanescent Waves for Characterizing Colloidal Liquids in Heat Transfer Applications. INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS AND EXPERIMENTAL MEASUREMENTS 2017. [DOI: 10.2495/cmem-v5-n1-34-43] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Johnson C, Suarez E, Gupta R, Shirai K. Investigation Into the Optimal Radiation Dose Schedule for Metastatic Melanoma Patients Receiving Concurrent Ipilimumab. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.2130] [Citation(s) in RCA: 1] [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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Sato R, Shirai K, Maekawa M, Genma R, Ohki S, Morita H, Suda T, Watanabe H. Glycaemia and autistic traits in very low birth weight infants in adulthood. DIABETES & METABOLISM 2016; 42:285-6. [PMID: 27037012 DOI: 10.1016/j.diabet.2016.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 02/28/2016] [Indexed: 10/22/2022]
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Musha A, Shirai K, Saitoh J, Yokoo S, Ohno T, Nakano T. Carbon Ion Radiotherapy for Oral Mucosal Melanoma. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Jimeno A, Shirai K, Choi M, Laskin J, Kochenderfer M, Spira A, Cline-Burkhardt V, Winquist E, Hausman D, Walker L, Cohen RB. A randomized, phase II trial of cetuximab with or without PX-866, an irreversible oral phosphatidylinositol 3-kinase inhibitor, in patients with relapsed or metastatic head and neck squamous cell cancer. Ann Oncol 2014; 26:556-61. [PMID: 25524478 DOI: 10.1093/annonc/mdu574] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND The phosphotidylinositol-3 kinase (PI3K)/serine-threonine kinase/mammalian target of rapamycin signaling pathway is frequently altered in head and neck squamous cell cancer (HNSCC). PX-866 is an oral, irreversible, pan-isoform inhibitor of PI3K. A phase I trial demonstrated tolerability of this combination. This randomized phase II study evaluated PX-866 combined with cetuximab in patients with advanced, refractory HNSCC. METHODS Patients with recurrent or metastatic HNSCC who had received at least one and no more than two prior systemic treatment regimens were randomized (1 : 1) to cetuximab with or without PX-866 (8 mg p.o. daily; arms A and B, respectively). The primary end point was progression-free survival (PFS). Secondary end points included objective response rate (ORR), overall survival (OS), toxicity, and correlation of key biomarkers with efficacy outcomes. RESULTS Eighty-three patients were enrolled. There was a similar response rate between arms (10% versus 7%). Of patients for whom tissue was assessable, 57% were human papillomavirus (HPV) positive. Median PFS was 80 days in both arms and there was no difference in OS between the two arms (211 versus 256 days). Overall toxicity was higher in arm A compared with arm B, especially in terms of nausea (53% versus 23%), vomiting (45% versus 15%), fatigue (43% versus 23%), diarrhea (40% versus 21%), and hypokalemia (25% versus 10%). Grade 3 or higher adverse events were infrequent, but more common in the combination arm although without a specific pattern. PIK3CA mutations were observed in 17% of the cases assessed, and PTEN loss was infrequently observed. CONCLUSION The addition of PX-866 to cetuximab did not improve PFS, RR, or OS in patients with advanced, refractory HNSCC enrolled without molecular preselection. In this contemporary cohort, HPV-positive patients comprised the majority, and neither HPV-positive nor HPV-negative patients derived clinical benefit for the addition of cetuximab plus PX-866.
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Okano N, Oike T, Saitoh J, Shirai K, Kiyono T, Enari M, Isono M, Torikai K, Ohno T, Nakano T. In Vitro Determination of the Relative Biological Effectiveness of Carbon Ion Beam Irradiation in Cells Derived From Human Normal Lung Tissues. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Musha A, Ogawa M, Makiguchi T, Shimada H, Shirai K, Saitoh J, Yokoo S, Suzuki Y, Ohno T, Nakano T. Acute Radiation Mucositis assessed changes over time by Oral Mucosal Dose Surface Model in Head and Neck Cancers Treated by Carbon Ion Radiotherapy. J Oral Maxillofac Surg 2014. [DOI: 10.1016/j.joms.2014.06.151] [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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Ike A, Shirai K, Nagata I, Sugihara M, Nishikawa H, Kawamura A, Mori K, Saku K. Significant differences in lipid profile associated with mace between hemodialysis (HD) and non-HD patients: FU-registry. Atherosclerosis 2014. [DOI: 10.1016/j.atherosclerosis.2014.05.768] [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: 11/25/2022]
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Shirai K. Early Palliative Care -The Current Situation in America. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt440] [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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Sato Y, Nagayama D, Ban N, Kawana H, Nagumo A, Ohira M, Endo K, Saiki A, Shirai K, Tatsuno I. Cardio Ankle Vascular Index (CAVI) is an independent predictor of cardiovascular events. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p1586] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ogawa S, Murakami S, Shirai K, Nakanishi K, Ohta T, Yagi S. NEXAFS Study of Air Oxidation for Mg Nanoparticle Thin Film. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1742-6596/417/1/012065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Ueda Y, Miyazaki M, Nishiyama K, Ueyama S, Tsujii K, Shirai K. Calculation of Cranial and Caudal Margins to Compensate Tumor Motion Change in Lung SBRT Using EPID Cine. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.2190] [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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Kaminuma T, Katoh H, Ishikawa H, Tamaki T, Shirai K, Matsui H, Itoh K, Ohno T, Suzuki K, Nakano T. Comparison of the Objective and Subjective Assessments of Urinary Condition in Hypofractionated Carbon-ion Radiation Therapy for Localized Prostate Cancer. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1048] [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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Saitoh J, Shirai K, Ohno T, Yoshimoto Y, Musya A, Katoh H, Noda S, Tamaki T, Suzuki Y, Nakano T. Changes of the Range of Carbon Ion Beam During the Course of Radiation Therapy for the Treatment of Nasal and Paranasal Mucosal Malignant Melanoma. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.2236] [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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Shirai K, Nishiyama K, Katsuda T, Ueda Y, Miyazaki M, Tsujii K, Ueyama S. Maximum Intensity Projection (MIP) and Average Intensity Projection (AIP) in Image Guided Stereotactic Body Radiation Therapy (SBRT) for Lung Cancer. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1921] [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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Matsumaru N, Shirai K, Kawamura Y, Yokota Y, Kumada K, Toyoda I, Ogura S. Quantified temporal changes of heart rate variability when developing SIRS. Crit Care 2012. [PMCID: PMC3504910 DOI: 10.1186/cc11796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Torres E, Marín V, Aburto J, Beltrán HI, Shirai K, Villanueva S, Sandoval G. Enzymatic modification of chitosan with quercetin and its application as antioxidant edible films. PRIKLADNAIA BIOKHIMIIA I MIKROBIOLOGIIA 2012; 48:175-182. [PMID: 22586910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Quercetin, rutin, naringin, hesperidin and chrysin were tested as substrates for chloroperoxidase to produce reactive quinones to graft onto chitosan. Quercetin and rutin quinones were successfully chemically attached to low molecular weight chitosan. The quercetin-modified chitosan showed an enhancement of plastic, antioxidant and antimicrobial properties as well as of thermal degradability. Finally, chitosan-quercetin films visibly decreased enzymatic oxidation when applied to Opuntia ficus indica cladodes.
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Torres E, Marín V, Aburto J, Beltrán HI, Shirai K, Villanueva S, Sandoval G. Enzymatic modification of chitosan with quercetin and its application as antioxidant edible films. APPL BIOCHEM MICRO+ 2012. [DOI: 10.1134/s0003683812020123] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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