Displaying all 9 publications

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  1. Chu SY, Sakai N, Mori K, Iverach L
    J Fluency Disord, 2017 Mar;51:1-7.
    PMID: 28212717 DOI: 10.1016/j.jfludis.2016.09.006
    PURPOSE: This study reports Japanese normative data for the Unhelpful Thoughts and Beliefs about Stuttering (UTBAS) scales. We outline the translation process, and evaluate the psychometric properties of the Japanese version of the UTBAS scales.

    METHODS: The translation of the UTBAS scales into Japanese (UTBAS-J) was completed using the standard forward-backward translation process, and was administered to 130 Japanese adults who stutter. To validate the UTBAS-J scales, scores for the Japanese and Australian cohorts were compared. Spearman correlations were conducted between the UTBAS-J and the Modified Erickson Communication Attitude scale (S-24), the self-assessment scale of speech (SA scale), and age. The test-retest reliability and internal consistency of the UTBAS-J were assessed. Independent t-tests were conducted to evaluate the differences in the UTBAS-J scales according to gender, speech treatment experience, and stuttering self-help group participation experience.

    RESULTS: The UTBAS-J showed good test-retest reliability, high internal consistency, and moderate to high significant correlations with S-24 and SA scale. A weak correlation was found between the UTBAS-J scales with age. No significant relationships were found between UTBAS-J scores, gender and speech treatment experience. However, those who participated in the stuttering self-help group demonstrated lower UTBAS-J scores than those who did not.

    CONCLUSION: Given the current scarcity of clinical assessment tools for adults who stutter in Japan, the UTBAS-J holds promise as an assessment tool and outcome measure for use in clinical and research environments.

  2. Chu SY, Sakai N, Lee J, Harrison E, Tang KP, Mori K
    J Fluency Disord, 2020 09;65:105767.
    PMID: 32535211 DOI: 10.1016/j.jfludis.2020.105767
    PURPOSE: Adults who stutter (AWS) often develop social anxiety disorder. This study was to provide comparative data on the Liebowitz Social Anxiety Scale-Japanese version (LSAS-J) from AWS and non-stuttering adult controls.

    METHODS: LSAS-J, a 24-item self-reported survey of social phobia and avoidance across various daily situations, was administered to 130 AWS (Mean Age = 41.5 years, SD = 15.8, 111 males) and 114 non-stuttering adults (Mean Age = 39.5, SD = 14.9, 53 males). The test-retest reliability and internal consistency of the LSAS-J were assessed. A between-subject multivariate analysis of variance (MANOVA) was also conducted to determine whether attitude toward social anxiety differed between AWS and AWNS, or by age (<40 and ≥ 40 years old), or sex (female and male).

    RESULTS: AWS reported higher scores on both fear subscales of the LSAS-J. Age had no significant influence on the social anxiety levels reported by either participant group. Sex differences were found in the fear subscales, with females scoring higher on both fear subscales, although these were only marginally significant (p = .06). LSAS-J showed good test-retest reliability and high Cronbach's alpha coefficient, indicating that it is an internally consistent measure of attitudes about social anxiety.

    CONCLUSION: Given the similarly high incidence of social anxiety in adults in Japan who stutter compared with those in other countries, social anxiety should be identified and assessed during clinical decision making and before decisions are made about stuttering treatment. LSAS-J is an easy tool to administer, and showed reliable results of social phobia and avoidance for AWS.

  3. Fujita M, Mori K, Hara H, Hishiyama S, Kamimura N, Masai E
    Commun Biol, 2019 12 17;2:476.
    PMID: 31872078 DOI: 10.1038/s42003-019-0724-8
    [This corrects the article DOI: 10.1038/s42003-019-0676-z.].
  4. Fujita M, Mori K, Hara H, Hishiyama S, Kamimura N, Masai E
    Commun Biol, 2019;2:432.
    PMID: 31799434 DOI: 10.1038/s42003-019-0676-z
    TonB-dependent receptors (TBDRs) mediate substrate-specific transport across the outer membrane, utilizing energy derived from the proton motive force transmitted from the TonB-ExbB-ExbD complex located in the inner membrane (TonB system). Although a number of TonB systems involved in the uptake of siderophores, vitamin B12 and saccharides have been identified, their involvement in the uptake and catabolism of aromatic compounds was previously unknown. Here, we show that the outer membrane transport of a biphenyl compound derived from lignin is mediated by the TonB system in a Gram-negative bacterium capable of degrading lignin-derived aromatic compounds, Sphingobium sp. strain SYK-6. Furthermore, we found that overexpression of the corresponding TBDR gene enhanced the uptake of this biphenyl compound, contributing to the improved rate of platform chemical production. Our results will provide an important basis for establishing engineered strains optimized for use in lignin valorisation.
  5. Khor CC, Do T, Jia H, Nakano M, George R, Abu-Amero K, et al.
    Nat Genet, 2016 May;48(5):556-62.
    PMID: 27064256 DOI: 10.1038/ng.3540
    Primary angle closure glaucoma (PACG) is a major cause of blindness worldwide. We conducted a genome-wide association study (GWAS) followed by replication in a combined total of 10,503 PACG cases and 29,567 controls drawn from 24 countries across Asia, Australia, Europe, North America, and South America. We observed significant evidence of disease association at five new genetic loci upon meta-analysis of all patient collections. These loci are at EPDR1 rs3816415 (odds ratio (OR) = 1.24, P = 5.94 × 10(-15)), CHAT rs1258267 (OR = 1.22, P = 2.85 × 10(-16)), GLIS3 rs736893 (OR = 1.18, P = 1.43 × 10(-14)), FERMT2 rs7494379 (OR = 1.14, P = 3.43 × 10(-11)), and DPM2-FAM102A rs3739821 (OR = 1.15, P = 8.32 × 10(-12)). We also confirmed significant association at three previously described loci (P < 5 × 10(-8) for each sentinel SNP at PLEKHA7, COL11A1, and PCMTD1-ST18), providing new insights into the biology of PACG.
  6. Li Z, Allingham RR, Nakano M, Jia L, Chen Y, Ikeda Y, et al.
    Hum Mol Genet, 2015 Jul 01;24(13):3880-92.
    PMID: 25861811 DOI: 10.1093/hmg/ddv128
    Primary open angle glaucoma (POAG), a major cause of blindness worldwide, is a complex disease with a significant genetic contribution. We performed Exome Array (Illumina) analysis on 3504 POAG cases and 9746 controls with replication of the most significant findings in 9173 POAG cases and 26 780 controls across 18 collections of Asian, African and European descent. Apart from confirming strong evidence of association at CDKN2B-AS1 (rs2157719 [G], odds ratio [OR] = 0.71, P = 2.81 × 10(-33)), we observed one SNP showing significant association to POAG (CDC7-TGFBR3 rs1192415, ORG-allele = 1.13, Pmeta = 1.60 × 10(-8)). This particular SNP has previously been shown to be strongly associated with optic disc area and vertical cup-to-disc ratio, which are regarded as glaucoma-related quantitative traits. Our study now extends this by directly implicating it in POAG disease pathogenesis.
  7. Sakai N, Chu SY, Mori K, Yaruss JS
    J Fluency Disord, 2017 Mar;51:50-59.
    PMID: 28212720 DOI: 10.1016/j.jfludis.2016.11.002
    PURPOSE: This study evaluates the psychometric performance of the Japanese version of the Overall Assessment of the Speaker's Experience of Stuttering for Adults (OASES-A), a comprehensive assessment tool of individuals who stutter.

    METHODS: The OASES-A-J was administered to 200 adults who stutter in Japan. All respondents also evaluated their own speech (SA scale), satisfaction of their own speech (SS scale) and the Japanese translation version of the Modified Erickson Communication Attitude scale (S-24). The test-retest reliability and internal consistency of the OASES-A-J were assessed. To examine the concurrent validity of the questionnaire, Pearson correlation was conducted between the OASES-A-J Impact score and the S-24 scale, SA scale and SS scale. In addition, Pearson correlation among the impact scores of each section and total were calculated to examine the construct validity.

    RESULTS: The OASES-A-J showed a good test-retest reliability (r=0.81-0.95) and high internal consistency (α>0.80). Concurrent validity was moderate to high (0.55-0.75). Construct validity was confirmed by the relation between internal consistency in each section and correlation among sections' impact scores. Japanese adults showed higher negative impact for 'General Information', 'Reactions to Stuttering' and 'Quality of Life' sections.

    CONCLUSION: These results suggest that the OASES-A-J is a reliable and valid instrument to measure the impact of stuttering on Japanese adults who stutter. The OASES-A-J could be used as a clinical tool in Japanese stuttering field.

  8. Sakamoto T, Shimura M, Kitano S, Ohji M, Ogura Y, Yamashita H, et al.
    Graefes Arch Clin Exp Ophthalmol, 2022 Feb;260(2):477-487.
    PMID: 34477927 DOI: 10.1007/s00417-021-05308-8
    PURPOSE: The MERCURY study aimed to evaluate the effects on visual acuity and psychological symptoms, and safety, of ranibizumab and subsequent treatment in patients with diabetic macular oedema (DME) and impaired visual acuity (VA). We report data from the prespecified 12-month interim analysis.

    METHODS: This was a 24-month, phase 4, open-label, single-arm, prospective, observational study conducted at 20 specialised retinal centres in Japan. Participants were 209 patients with DME and impaired VA, not previously treated with either intravitreal or systemic anti-vascular endothelial growth factor (anti-VEGF) agents, who initiated ranibizumab 0.5 mg per investigator discretion. Following ranibizumab administration, patients were treated per routine clinical practice. Other treatments were allowed. The main outcome measure was the mean change in best-corrected VA (BCVA) in logarithmic minimum angle of resolution (logMAR) from baseline to month 12. An exploratory objective was to assess patients' psychological status using the Hospital Anxiety and Depression Scale (HADS).

    RESULTS: The mean ± standard deviation BCVA at baseline was 0.43 ± 0.39 logMAR. The mean number of injections of ranibizumab and anti-VEGF agents from baseline to month 11 was 3.2 ± 2.0 and 3.6 ± 2.4, respectively. The BCVA change from baseline to 12 months was - 0.08 ± 0.34 logMAR (p = 0.011), showing a significant improvement; the HADS-anxiety score also decreased significantly (p = 0.001) and the depression score decreased numerically (p = 0.080).

    CONCLUSION: MERCURY study data confirm the effectiveness of real-world treatment initiated with ranibizumab in Japanese patients with DME. In addition, treatment was able to positively influence anxiety via VA improvement.

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