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  • SAGE Publications  (22)
  • 1
    Online Resource
    Online Resource
    Surgical Outcomes of Selective Laminectomy for Patients With Cervical Kyphosis: A Retrospective Study of 379 Cases
    SAGE Publications ; 2023
    In:  Global Spine Journal Vol. 13, No. 7 ( 2023-09), p. 1777-1786
    Details
    In: Global Spine Journal, SAGE Publications, Vol. 13, No. 7 ( 2023-09), p. 1777-1786
    Abstract: A retrospective study. Objectives This study aimed to investigate the impact of cervical kyphosis on patients with cervical spondylotic myelopathy (CSM) following selective laminectomy (SL) regarding posterior spinal cord shift (PSS), and a number of SLs. Methods We evaluated 379 patients with CSM after SL. The patients with kyphosis (group K) were compared with those without kyphosis (group L). Moreover, groups K and L were divided into subgroups KS and KL (SLs ≤ 2) and LS and LL (SLs ≥ 3), respectively, and analyzed. Receiver operating characteristic (ROC) curve analysis was performed to determine the cut-off value of the C2–C7 angle for satisfactory surgical outcomes, which was defined as a Japanese Orthopaedic Association (JOA) recovery rate of ≥50% in group KS. Results The average PSS (mm) in group K was smaller than that in group L (.8 vs 1.4; P 〈 .01), but the JOA recovery rate was comparable between the 2 groups. Meanwhile, the mean PSS and JOA recovery rate (%) in group KS was lower than those in group KL, respectively (.3 vs 1.0; P 〈 .01, 35.1 vs 52.3; P = .047). Moreover, the average PSS of group KS (.6) was smaller than those of other subgroups ( 〈 .01). In addition, the ROC curve analysis showed that the C2–C7 angle of −14.5° could predict satisfactory surgical outcomes in group KS. Conclusion Selective laminectomy is not contraindicated for patients with kyphosis, but a larger number of SLs may be indicated for the patients with C2–C7 angles of ≤ −14.5°.
    Type of Medium: Online Resource
    ISSN: 2192-5682 , 2192-5690
    URL: Article
    DOI: 10.1177/21925682211049799
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2023
    detail.hit.zdb_id: 2648287-3
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  • 2
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    Psychometric Evaluation of the Japanese Version of the Posttraumatic Stress Disorder Checklist in Community Dwellers Following the Fukushima Daiichi Nuclear Power Plant Incident : The Fukushima Health Management Survey
    SAGE Publications ; 2016
    In:  SAGE Open Vol. 6, No. 2 ( 2016-04-01), p. 215824401665244-
    Details
    In: SAGE Open, SAGE Publications, Vol. 6, No. 2 ( 2016-04-01), p. 215824401665244-
    Abstract: We investigated the psychometric properties of the Japanese version of the Posttraumatic Stress Disorder Checklist–Stressor Specific Version (PCL-S) using baseline data from the Fukushima Health Management Survey. A total of 26,332 men and 33,516 women aged 16 and above participated in this study. Participants lived in the Fukushima evacuation zone in Japan and experienced the Great East Japan Earthquake and nuclear power plant (NPP) incident. The PCL-S was used to assess participants’ posttraumatic stress disorder (PTSD) symptoms. In addition, we described participants and tested the validity of the PCL-S by administering the Kessler Six-item Screening Scale for Psychological Distress (K6) and assessing education; employment; self-rated health; sleep satisfaction; experiencing the earthquake, tsunami, and NPP incident; and bereavement as a result of the disaster. PCL-S scores exhibited a positively skewed, slightly leptokurtic distribution. Confirmatory factor analysis revealed that the five-factor model was a better fit than were the three- or four-factor models. The PCL-S and its subscales had high Cronbach’s alpha coefficients. The PCL-S scores had weak-to-moderate correlations with history of mental illness, bereavement, experiencing the tsunami, experiencing the NPP incident, self-rated health, and sleep satisfaction, as well as a strong correlation with psychological distress. There were significant gender and age differences in PCL-S scores. Overall, this study confirmed the psychometric properties of the PCL-S, including the score distribution, factor structure, reliability, validity, and gender and age differences. Thus, the Japanese version of the PCL-S would be a useful instrument for assessing the PTSD symptoms of community dwellers who have experienced traumatic events.
    Type of Medium: Online Resource
    ISSN: 2158-2440 , 2158-2440
    URL: Article
    DOI: 10.1177/2158244016652444
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2016
    detail.hit.zdb_id: 2628279-3
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  • 3
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    Time Course Evaluation of Reparative Cartilage with MR Imaging after Autologous Chondrocyte Implantation
    SAGE Publications ; 2005
    In:  Cell Transplantation Vol. 14, No. 9 ( 2005-10), p. 695-700
    Details
    In: Cell Transplantation, SAGE Publications, Vol. 14, No. 9 ( 2005-10), p. 695-700
    Abstract: The aim of this study was to evaluate the qualitative change in reparative cartilage after autologous chondrocyte implantation (ACI). Ten knees of 10 patients were studied. The signal intensities of reparative and normal cartilage were evaluated by fat-suppressed three-dimensional spoiled-gradient recalled (FS 3D-SPGR) MR imaging. The signal intensity (SI) index (signal intensity of reparative cartilage divided by that of normal cartilage) was defined and the change in SI index was investigated. Histological and biochemical evaluation was done at the second look arthroscopy. The SI index was at its lowest level immediately after ACI and increased with time to 9 months thereafter. After 9–12 months, the SI index settled to almost level and was maintained at that value for at least 2–3 years postoperatively. The average of the SI indexes after 12 months to the last examination was 74.2 ± 4.6 (range 64.2–82.8), which means signal intensity of reparative cartilage was maintained at a value lower than that of normal cartilage. The total ICRS score was 11.6 ± 2.3 points (mean ± SD). The GAG concentration was 107.9 ± 17.0 μg/mg (mean ± SD) in normal cartilage and 65.9 ± 9.4 μg/mg in reparative cartilage. The quality of reparative cartilage as hyaline cartilage was inferior to that of normal cartilage. In the present study, the time course change in the SI index indicates that the major maturation process of implanted chondrocytes neared completion in 9–12 months. Minor changes, such as matrix remodeling with reorganization of the collagen fibers in reparative cartilage, may continue, but an almost identical condition seemed to be maintained during the first 2–3 years of follow-up. SI index does not always reflect all properties of reparative cartilage but may be a useful parameter for noninvasive evaluation.
    Type of Medium: Online Resource
    ISSN: 0963-6897 , 1555-3892
    URL: Article
    DOI: 10.3727/000000005783982666
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2005
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  • 4
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    Online Resource
    Synthesis of poly(amide-imide)s by palladium-catalysed polycondensation of aromatic dibromides containing imide structure, aromatic diamines and carbon monoxide
    SAGE Publications ; 1994
    In:  High Performance Polymers Vol. 6, No. 4 ( 1994-08), p. 395-403
    Details
    In: High Performance Polymers, SAGE Publications, Vol. 6, No. 4 ( 1994-08), p. 395-403
    Abstract: A general method for the preparation of aromatic poly(amide-imide)s, which involves the palladium-catalysed polycondensation of aromatic dibromides containing imide structural units, aromatic diamines and carbon monoxide, has been developed. Polymerizations were carried out in N,N-dimethylacetamide (DMAc) in the presence of palladium catalyst, triphenylphosphine and 1,8-diazabicycIo[5,4,0]-7-undecene (DBU), and gave a series of poly(amide-imide)s with inherent viscosities up to 0.66 dl g-1 under mild conditions. The polymers were quite soluble in strong acids, dipolar aprotic solvents and pyridine. Thermogravimetry of the polymers showed excellent thermal stability, indicating that 10% weight losses of the polymers were observed in the range above 460C in air. The glass transition temperatures of the polymers ranged from 240 to 262C. These polymers also showed good tensile strengths and moduli.
    Type of Medium: Online Resource
    ISSN: 0954-0083 , 1361-6412
    URL: Article
    DOI: 10.1088/0954-0083/6/4/007
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1994
    detail.hit.zdb_id: 1483713-4
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  • 5
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    Online Resource
    Synthesis of Fully Aliphatic Polyimides
    SAGE Publications ; 1999
    In:  High Performance Polymers Vol. 11, No. 3 ( 1999-09), p. 255-262
    Details
    In: High Performance Polymers, SAGE Publications, Vol. 11, No. 3 ( 1999-09), p. 255-262
    Abstract: Fully aliphatic polyimides (APIs) have been synthesized. APIs were prepared by poly(addition-condensation) of the alicyclic dianhydride bicyclo[2.2.2]octane-2, 3, 5, 6-tetra-carboxylic 2, 3:5, 6-dianhydride with the aliphatic diamine 5-amino-1, 3, 3-trimethylcyclo-hexanemethylamine, the mixture of 2, 5- and 2, 6-bis(aminomethyl)bicyclo[2.2.1]heptane or 1, 4-cyclohexanebis(methylamine) in m-cresol at high temperature. The polymerization proceeded smoothly at 200 °C and produced APIs with inherent viscosities up to 0.48 dl g −1 . The APIs were soluble in a wide range of polar solvents and showed high thermal stability and excellent transparency.
    Type of Medium: Online Resource
    ISSN: 0954-0083 , 1361-6412
    URL: Article
    DOI: 10.1088/0954-0083/11/3/301
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1999
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  • 6
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    Mild Acute Graft-Versus-Host Disease Improves Outcomes After HLA-Haploidentical-Related Donor Transplantation Using Posttransplant Cyclophosphamide and Cord Blood Transplantation
    SAGE Publications ; 2023
    In:  Cell Transplantation Vol. 32 ( 2023-01)
    Details
    In: Cell Transplantation, SAGE Publications, Vol. 32 ( 2023-01)
    Abstract: Haploidentical-related donor transplantation using posttransplant cyclophosphamide (PTCy-haplo) and cord blood transplantation (CBT) are valid alternatives for patients with hematological malignancies when HLA-matched donor transplantation (MDT) is unavailable. However, the effects of graft-versus-host disease (GVHD) on outcomes after these transplants have not been fully elucidated. Therefore, we evaluated the effects of acute and chronic GVHD on transplant outcomes after PTCy-haplo transplants and compared them with CBT and MDT. We included a total of 914 adult patients with hematological malignancies in the Kyoto Stem Cell Transplantation Group registry who received PTCy-haplo (N = 120), CBT (N = 402), and MDT (N = 392), and achieved neutrophil engraftment. A multivariate analysis revealed that grade I–II acute GVHD improved of overall survival (OS) after PTCy-haplo [hazard ratio (HR) = 0.39, P = 0.018] and CBT (HR = 0.48, P 〈 0.001), but not after MDT (HR = 0.80, P = 0.267) compared with patients without acute GVHD. Grade I–II acute GVHD had a trend toward reducing the risk of nonrelapse mortality (NRM) after PTCy-haplo (HR = 0.13, P = 0.060) and this positive effect was significant after CBT (HR = 0.39, P = 0.003). A negative impact of grade III–IV acute GVHD on NRM was observed after CBT and MDT, but not after PTCy-haplo. Limited chronic GVHD had a positive impact on OS after CBT and MDT, but not after PTCy-haplo. In conclusion, mild acute GVHD improved outcomes after PTCy-haplo and CBT, and limited chronic GVHD improved outcomes after CBT and MDT. These data indicated that the effects of GVHD on transplant outcomes depended on transplant platforms.
    Type of Medium: Online Resource
    ISSN: 0963-6897 , 1555-3892
    URL: Article
    DOI: 10.1177/09636897231194497
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2023
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  • 7
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    Synthesis and Properties of a Novel Thermostable Polymer: Fluorinated Polycarbodiimide
    SAGE Publications ; 1997
    In:  High Performance Polymers Vol. 9, No. 4 ( 1997-12), p. 385-395
    Details
    In: High Performance Polymers, SAGE Publications, Vol. 9, No. 4 ( 1997-12), p. 385-395
    Abstract: A new fluorinated linear polycarbodiimide (F-PCD) was synthesized by solution polycondensation of a new fluorinated diisocyanate monomer, 4″, 4″′-(hexafluoroisopropylidene) bis(4-phenoxyphenyl isocyanate) (HPI) in the presence of 3-methyl-1-phenyl-2-phospholene-1-oxide (PMO). HPI was prepared from 4″, 4″′-(hexafluoroisopropylidene)bis(4-phenoxyaniline) (HPA) by three steps. The reaction of HPA with phenyl chloroformate gave the corresponding carbamate, which upon reaction with trimethylsilylchloride (TMS-Cl)-triethylamine (TEA), followed by thermal decomposition, provided HPI. The polymer having a number average molecular weight up to 8400 was obtained in quantitative yield. Thermal properties were investigated and we found that the polymer has a higher glass transition temperature ( T g )upto 230 °C, and a lower dielectric constant at 2.98 at 1 MHz than the conventional polycarbodiimides (PCDs). The linear F-PCD was soluble in a wide range of common organic solvents such as toluene and dichloromethane.
    Type of Medium: Online Resource
    ISSN: 0954-0083 , 1361-6412
    URL: Article
    DOI: 10.1088/0954-0083/9/4/003
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1997
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  • 8
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    Online Resource
    Preparation and Properties of Polyisoimides as a Highly Dimensionally Stable Polyimide Precursor with Low Dielectric Constant
    SAGE Publications ; 1997
    In:  High Performance Polymers Vol. 9, No. 3 ( 1997-09), p. 333-344
    Details
    In: High Performance Polymers, SAGE Publications, Vol. 9, No. 3 ( 1997-09), p. 333-344
    Abstract: Fluorinated polyimides (PIs) with low dielectric constant and high dimensional stability have been developed using polyisoimides (PIIs) as a polyimide precursor. The PIIs were prepared by the ring-opening polyaddition of the dianhydrides pyromellitic dianhydride, biphenyltetracarboxylic dianhydride and 4, 4′-hexafluoropropylidenedi(phthalic anhydride) with the diamines 2, 2′-dimethylbenzidine and 2, 2′-bis(trifluoromethyl)benzidine, followed by treatment with trifluoroacetic anhydride/triethylamine or dicyclohexylcarbodiimide in N;N-dimethylacetamide. The PIIs were soluble in a wide range of solvents including dipolar aprotic solvents, cyclohexanone and tetrahydrofuran at room temperature, and easy to convert to corresponding PIs by high thermal treatment. The resulting PIs showed low dielectric constants of less than 3 at 1 MHz as well as low CTEs. Furthermore, during the isomerization reaction, migration of copper in the PI film was hardly observed.
    Type of Medium: Online Resource
    ISSN: 0954-0083 , 1361-6412
    URL: Article
    DOI: 10.1088/0954-0083/9/3/011
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1997
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  • 9
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    One-Pot Synthesis of Aromatic Polycarbodiimide by in Situ Activation of Diamine
    SAGE Publications ; 1998
    In:  High Performance Polymers Vol. 10, No. 1 ( 1998-03), p. 51-59
    Details
    In: High Performance Polymers, SAGE Publications, Vol. 10, No. 1 ( 1998-03), p. 51-59
    Abstract: A one-pot synthesis of aromatic polycarbodiimide from aromatic diamine has been developed. This method involves the preparation of carbamate by the reaction of 4, 4′-hexafluoroisopropylidenebis( p-phenyleneoxy)dianiline (6FPA) with phenylchloroformate, followed by the transformation of the carbamate with trimethylsilylchloride-triethylamine to diisocyanate, and then the polycondensation of the resulting diisocyanate in the presence of 3-methyl-1-phenyl-2-phosopholene-1-oxide. The polycarbodiimide (6FPCD) from 6FPA was obtained in quantitative yield having a number average molecular weight up to 5000. The thermal treatment of 6FPCD gave a crosslinkined polymer having a high glass transition temperature up to 200 °C.
    Type of Medium: Online Resource
    ISSN: 0954-0083 , 1361-6412
    URL: Article
    DOI: 10.1088/0954-0083/10/1/007
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1998
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  • 10
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    Molecular Weight Control of Thermosetting Poly(phenylene ether) Copolymer Produced by Heterogeneous Oxidative Coupling Polymerization
    SAGE Publications ; 2010
    In:  High Performance Polymers Vol. 22, No. 4 ( 2010-06), p. 458-467
    Details
    In: High Performance Polymers, SAGE Publications, Vol. 22, No. 4 ( 2010-06), p. 458-467
    Abstract: An efficient synthetic method to control the molecular weights of poly(phenylene ether) copolymer (Allyl-PPE) with a narrow molecular weight distribution (MWD) by oxidative coupling polymerization of 2,6-dimethylphenol (DMP) and 2-allyl-6-methylphenol (AMP) has been developed. This polymerization was carried out in the presence of the di- μ-hydroxo-bis[( N , N , N ′ , N ′ -tetramethylethylenediamine)copper(II)] chloride (Cu/TMEDA) catalyst in a water droplet/toluene heterogeneous system. The polymerization conditions such as the effects of the Cu/TMEDA concentration and the amount of water were investigated, and it was found that the molecular weight of Allyl-PPE could be easily controlled by changing the concentration of Cu/TMEDA aqueous solution.
    Type of Medium: Online Resource
    ISSN: 0954-0083 , 1361-6412
    URL: Article
    DOI: 10.1177/0954008309337564
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2010
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