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  1. Article ; Online: Cryptic Lineage and Genetic Structure of Acanthopagrus pacificus Populations in a Natural World Heritage Site Revealed by Population Genetic Analysis

    Islam, Md Rakeb-Ul / Tachihara, Katsunori / Imai, Hideyuki

    Diversity. 2022 Dec. 15, v. 14, no. 12

    2022  

    Abstract: Recent studies have revealed extensive genetic differentiation among some populations of marine taxa that were previously believed to be essentially homogeneous because larvae are widely dispersed in ocean currents. Acanthopagrus pacificus is a ... ...

    Abstract Recent studies have revealed extensive genetic differentiation among some populations of marine taxa that were previously believed to be essentially homogeneous because larvae are widely dispersed in ocean currents. Acanthopagrus pacificus is a commercially and ecologically important teleost fish that is endemic to shallow coastal waters and estuaries of some tropical and sub-tropical areas in the West Pacific Ocean. Here, we examined genetic structure and the inferred demographic history of A. pacificus populations from mtDNA control region sequence data. A 677–678 base-pair fragment was sequenced from 159 individuals sampled at three localities across the West Pacific Ocean. Haplotype diversity was high, ranging from 0.915 to 0.989, while nucleotide diversity was low to medium, ranging from 0.8% to 2.60%. Analysis of molecular variance (AMOVA) showed significant genetic subdivision (FST = 0.155, p < 0.05) among sampled populations while pairwise FST estimates also revealed strong genetic differentiation among populations indicating that gene flow was restricted. Two distinct cryptic lineages were identified that were estimated to have diverged during the Pleistocene. In summary, contemporary factors including regional oceanic currents and self-recruitment are considered to have played significant roles in producing the population structure in this fish. In particular, the genetic information generated in the current study will allow appropriate fisheries management and conservation strategies to be developed for this important local fish in the waters around Iriomotejima Island, a World Heritage site.
    Keywords Acanthopagrus ; Pleistocene epoch ; cryptic speciation ; fish ; gene flow ; genetic analysis ; genetic structure ; genetic variation ; haplotypes ; population structure ; variance ; Pacific Ocean
    Language English
    Dates of publication 2022-1215
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article ; Online
    ZDB-ID 2518137-3
    ISSN 1424-2818
    ISSN 1424-2818
    DOI 10.3390/d14121117
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: Pleiotropic Functions of Nitric Oxide Produced by Ascorbate for the Prevention and Mitigation of COVID-19: A Revaluation of Pauling's Vitamin C Therapy.

    Yamasaki, Hideo / Imai, Hideyuki / Tanaka, Atsuko / Otaki, Joji M

    Microorganisms

    2023  Volume 11, Issue 2

    Abstract: Linus Pauling, who was awarded the Nobel Prize in Chemistry, suggested that a high dose of vitamin C (l-ascorbic acid) might work as a prevention or treatment for the common cold. Vitamin C therapy was tested in clinical trials, but clear evidence was ... ...

    Abstract Linus Pauling, who was awarded the Nobel Prize in Chemistry, suggested that a high dose of vitamin C (l-ascorbic acid) might work as a prevention or treatment for the common cold. Vitamin C therapy was tested in clinical trials, but clear evidence was not found at that time. Although Pauling's proposal has been strongly criticized for a long time, vitamin C therapy has continued to be tested as a treatment for a variety of diseases, including coronavirus infectious disease 2019 (COVID-19). The pathogen of COVID-19, SARS-CoV-2, belongs to the β-coronavirus lineage, which includes human coronavirus, severe acute respiratory syndrome (SARS), and Middle East respiratory syndrome (MERS). This review intends to shed new light on vitamin C antiviral activity that may prevent SARS-CoV-2 infection through the chemical production of nitric oxide (NO). NO is a gaseous free radical that is largely produced by the enzyme NO synthase (NOS) in cells. NO produced by upper epidermal cells contributes to the inactivation of viruses and bacteria contained in air or aerosols. In addition to enzymatic production, NO can be generated by the chemical reduction of inorganic nitrite (NO
    Language English
    Publishing date 2023-02-03
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2720891-6
    ISSN 2076-2607
    ISSN 2076-2607
    DOI 10.3390/microorganisms11020397
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Molecular ecology of a shallow water shrimp, Acetes sibogae sibogae Hansen 1919: Evidence for strongly limited gene flow across the western Pacific

    Hardianto, Eko / Fukuchi, Jun / Hanamura, Yukio / Wijayanti, Diah Permata / Sabdono, Agus / Imai, Hideyuki

    Marine ecology. 2022 Apr., v. 43, no. 2

    2022  

    Abstract: The shallow water shrimp Acetes sibogae sibogae is an ecological and economically important organism in the Asian region. We assessed the genetic diversity and population structure of this species based on samples obtained from eight sites in Japan, the ... ...

    Abstract The shallow water shrimp Acetes sibogae sibogae is an ecological and economically important organism in the Asian region. We assessed the genetic diversity and population structure of this species based on samples obtained from eight sites in Japan, the Philippines and Indonesia. Nucleotide sequence analyses were performed based on PCR‐amplified mitochondrial DNA fragments comprising the control region and part of the 12S rRNA gene. In total, 656 bp nucleotide sequences were obtained from 377 individuals. The results show a low haplotype diversity value in shrimp from the Kokuba‐gawa River (0.5) in Japan and intermediate values (0.79–0.99) in other populations. While nucleotide diversity estimates in all sampled localities were lower (0.17%–0.86%) than those reported in other crustaceans, analysis of molecular variance revealed significant genetic differentiation (p < .001) among all sites. Furthermore, the mean fixation index estimate was very high (FST: 0.27), indicating that dispersal potential among sites was low and gene flow, therefore, was restricted. The mismatch distribution of pairwise differences between haplotypes indicated that A. s. sibogae did not fit a sudden population expansion model. Overall, the present study indicates that wild stocks of A. s. sibogae on Okinawa‐jima Island and the Philippine and Indonesian Archipelagos should be assigned high importance for conservation management of this species because adapted genotypes have significant evolutionary potential during environmental changes. [Correction added on 5th February 2022, after first online publication: Values have been corrected in the Abstract section.]
    Keywords Acetes ; Japan ; Philippines ; gene flow ; genes ; genetic variation ; haplotypes ; marine science ; mitochondrial DNA ; models ; nucleotide sequences ; population growth ; population structure ; rivers ; shrimp ; variance ; Indonesia
    Language English
    Dates of publication 2022-04
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 2020745-1
    ISSN 1439-0485 ; 0173-9565
    ISSN (online) 1439-0485
    ISSN 0173-9565
    DOI 10.1111/maec.12695
    Database NAL-Catalogue (AGRICOLA)

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  4. Article ; Online: Education and licensure of dental technicians.

    Takeuchi, Yoshimasa / Koizumi, Hiroyasu / Imai, Hideyuki / Furuchi, Mika / Takatsu, Masaki / Shimoe, Saiji

    Journal of oral science

    2022  Volume 64, Issue 4, Page(s) 310–314

    Abstract: The Japanese Health, Labour, and Welfare Ministry in 2020 identified the following issues for training and recruitment of dental technicians: early involvement of students in dental practice and dental laboratory work, a curriculum in line with the times, ...

    Abstract The Japanese Health, Labour, and Welfare Ministry in 2020 identified the following issues for training and recruitment of dental technicians: early involvement of students in dental practice and dental laboratory work, a curriculum in line with the times, and an extension of the years of training. This paper investigates the education and qualifications of dental technicians in other countries to discuss these issues. The survey method was to use the database PubMed to search the literature since 2001 using the keywords "dental technician," "education," and license" to collect literature related to the pre-graduate education of dental technicians. Information on educational institutions was also included in the survey. The results showed that the countries that introduced joint education between dental technicians and dentists into their educational programs, and the examinations and years of training required for each certification varied from country to country. The curriculum for dental technicians in Japan changed from a time-based to a credit-based system on April 1, 2018. The credit system is characterized by the possibility of each training institution actively engaging in flexible curriculum organization. Dental technician education programs in other countries can provide a valuable reference for each training institute to demonstrate its uniqueness.
    MeSH term(s) Certification ; Curriculum ; Dental Technicians ; Humans ; Japan
    Language English
    Publishing date 2022-07-16
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 1434462-2
    ISSN 1880-4926 ; 1343-4934
    ISSN (online) 1880-4926
    ISSN 1343-4934
    DOI 10.2334/josnusd.22-0173
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Effect of Awareness and Habits of Oral Care on Life Satisfaction.

    Hirano, Masanori / Imai, Hideyuki / Oya, Masaru

    Oral health & preventive dentistry

    2019  Volume 17, Issue 2, Page(s) 131–138

    Abstract: Purpose: New methods of public education in oral care must be developed, because the public understanding of the importance of oral care is insufficient. This questionnaire study examined the parameters 'awareness and attitude relevant to teeth and ... ...

    Abstract Purpose: New methods of public education in oral care must be developed, because the public understanding of the importance of oral care is insufficient. This questionnaire study examined the parameters 'awareness and attitude relevant to teeth and mouth' and 'consciousness and attitude of daily life' in order to clarify what kind of information is needed for public education in oral care.
    Materials and methods: Data gathered in a survey of oral care behaviours and lifestyle among the elderly were analysed for oral care awareness and health of the teeth using the factor analysis method. The respondents were divided into four groups according to two factors relating to oral health condition and oral care awareness.
    Results: The high oral-care-consciousness group had a greater awareness of general health and sociability as well as life satisfaction than did the low oral-care-consciousness group. However, the respondents' economic situation had a larger effect on life satisfaction. The respondents were then divided into higher, middle, and lower economic status groups, and the relation between oral care awareness and life satisfaction was analysed for each group. As a result, the correlation between life satisfaction and oral care consciousness was observed by excluding the economic factors.
    Conclusion: The present data suggest that oral care awareness may contribute to improvement of lifestyle and life satisfaction.
    MeSH term(s) Adult ; Aged ; Economic Status ; Factor Analysis, Statistical ; Female ; Health Education ; Health Knowledge, Attitudes, Practice ; Humans ; Japan ; Male ; Middle Aged ; Oral Hygiene ; Personal Satisfaction ; Surveys and Questionnaires
    Language English
    Publishing date 2019-03-14
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2136786-3
    ISSN 1757-9996 ; 1602-1622
    ISSN (online) 1757-9996
    ISSN 1602-1622
    DOI 10.3290/j.ohpd.a42204
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: An Evaluation of the Efficacy of Machine Learning in Predicting Thyrotoxicosis and Hypothyroidism: A Comparative Assessment of Biochemical Test Parameters Used in Different Health Checkups.

    Yoshimura Noh, Jaeduk / Yoshihara, Ai / Hiruma, Shigenori / Ichikawa, Masahiro / Hirose, Rei / Koshibu, Masakazu / Imai, Hideyuki / Sankoda, Akiko / Suzuki, Nami / Fukushita, Miho / Matsumoto, Masako / Watanabe, Natsuko / Sugino, Kiminori / Ito, Koichi

    Internal medicine (Tokyo, Japan)

    2024  

    Abstract: Objective This study assessed the efficacy of machine learning in predicting thyrotoxicosis and hypothyroidism [thyroid-stimulating hormone (TSH) >10.0 mIU/L] by leveraging age and sex as variables and integrating biochemical test parameters used by the ... ...

    Abstract Objective This study assessed the efficacy of machine learning in predicting thyrotoxicosis and hypothyroidism [thyroid-stimulating hormone (TSH) >10.0 mIU/L] by leveraging age and sex as variables and integrating biochemical test parameters used by the Japan Society of Health Evaluation and Promotion (JHEP) and the Japan Society of Ningen Dock (JND). Subjects and Methods Our study included 20,653 untreated patients with Graves' disease, 3,435 untreated patients with painless thyroiditis, 4,266 healthy individuals, and 18,937 untreated patients with Hashimoto's thyroiditis. Machine learning was conducted using Prediction One on three distinct datasets: the Ito dataset (age, sex, and 30 blood tests and biochemical test data), the JHEP dataset (age, sex, and TP, T-Bil, AST, ALT, γGTP, ALP, CRE, UA, and T-Cho test data), and the JND dataset (age, sex, and AST, ALT, γGTP, CRE, and UA test data). Results The results for distinguishing thyrotoxicosis patients from the healthy control group showed that the JHEP dataset yielded substantial discriminative capacity with an area under the curve (AUC) of 0.966, sensitivity of 92.2%, specificity of 89.1%, and accuracy of 91.7%. The JND dataset displayed similar robustness, with an AUC of 0.948, sensitivity of 92.0%, specificity of 81.3%, and accuracy of 90.4%. Differentiating hypothyroid patients from the healthy control group yielded similarly robust performances, with the JHEP dataset yielding AUC, sensitivity, specificity, and accuracy values of 0.864, 84.2%, 72.1%, and 77.4%, respectively, and the JND dataset yielding values of 0.840, 83.2%, 67.2%, and 74.3%, respectively. Conclusions Machine learning is a potent screening tool for thyrotoxicosis and hypothyroidism.
    Language English
    Publishing date 2024-01-02
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 32371-8
    ISSN 1349-7235 ; 0021-5120 ; 0918-2918
    ISSN (online) 1349-7235
    ISSN 0021-5120 ; 0918-2918
    DOI 10.2169/internalmedicine.2825-23
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Dose-dependent incidence of agranulocytosis in patients treated with methimazole and propylthiouracil.

    Yoshimura Noh, Jaeduk / Inoue, Kosuke / Suzuki, Nami / Yoshihara, Ai / Fukushita, Miho / Matsumoto, Masako / Imai, Hideyuki / Hiruma, Shigenori / Ichikawa, Masahiro / Koshibu, Masakazu / Sankoda, Akiko / Hirose, Rei / Watanabe, Natsuko / Sugino, Kiminori / Ito, Koichi

    Endocrine journal

    2024  

    Abstract: Agranulocytosis is a serious adverse effect of methimazole (MMI) and propylthiouracil (PTU), and although there have been reports suggesting a dose-dependent incidence in relation to both drugs, the evidence has not been conclusive. The objective of our ... ...

    Abstract Agranulocytosis is a serious adverse effect of methimazole (MMI) and propylthiouracil (PTU), and although there have been reports suggesting a dose-dependent incidence in relation to both drugs, the evidence has not been conclusive. The objective of our study was to determine whether the incidences of agranulocytosis induced by MMI and PTU exhibit dose-dependency. The subjects were 27,784 patients with untreated Graves' disease, 22,993 of whom were on an antithyroid drug treatment regimen for more than 90 days. Within this subset, 18,259 patients had been treated with MMI, and 4,734 had been treated with PTU. The incidence of agranulocytosis according to dose in the MMI group was 0.13% at 10 mg/day, 0.20% at 15 mg/day, 0.32% at 20 mg/day, and 0.47% at 30 mg/day, revealing a significant dose-dependent increase. In the PTU group, there were 0 cases of agranulocytosis at doses of 125 mg/day and below, 0.33% at 150 mg/day, 0.31% at 200 mg/day, and 0.81% at 300 mg/day, also revealing a significant dose-dependent increase. The incidence of agranulocytosis at MMI 15 mg and PTU 300 mg, i.e., at the same potency in terms of hormone synthesis inhibition, was 0.20% and 0.81%, respectively, and significantly higher in the PTU group. Our findings confirm a dose-dependent increase in the incidence of agranulocytosis with both drugs, but that at comparable thyroid hormone synthesis inhibitory doses PTU has a considerably higher propensity to induce agranulocytosis than MMI does.
    Language English
    Publishing date 2024-05-03
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 1151918-6
    ISSN 1348-4540 ; 0918-8959
    ISSN (online) 1348-4540
    ISSN 0918-8959
    DOI 10.1507/endocrj.EJ24-0135
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Education, licensure, and specialty of dental technician.

    Koizumi, Hiroyasu / Imai, Hideyuki / Kawai, Yasuhiko

    Journal of prosthodontic research

    2019  Volume 64, Issue 2, Page(s) 235–236

    MeSH term(s) Dental Technicians ; Education, Dental ; Humans ; Licensure ; Specialty Boards ; United States
    Language English
    Publishing date 2019-06-15
    Publishing country Japan
    Document type Letter
    ZDB-ID 2470657-7
    ISSN 2212-4632 ; 1883-1958
    ISSN (online) 2212-4632
    ISSN 1883-1958
    DOI 10.1016/j.jpor.2019.05.008
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Analysis of human clinical and environmental Leptospira to elucidate the eco-epidemiology of leptospirosis in Yaeyama, subtropical Japan.

    Sato, Yukuto / Hermawan, Idam / Kakita, Tetsuya / Okano, Sho / Imai, Hideyuki / Nagai, Hiroto / Kimura, Ryosuke / Yamashiro, Tetsu / Kajita, Tadashi / Toma, Claudia

    PLoS neglected tropical diseases

    2022  Volume 16, Issue 3, Page(s) e0010234

    Abstract: Background: Leptospirosis, a zoonosis caused by species in the spirochete genus Leptospira, is endemic to the Yaeyama region in Okinawa, subtropical Japan. Species of the P1 subclade "virulent" group, within the genus Leptospira, are the main ... ...

    Abstract Background: Leptospirosis, a zoonosis caused by species in the spirochete genus Leptospira, is endemic to the Yaeyama region in Okinawa, subtropical Japan. Species of the P1 subclade "virulent" group, within the genus Leptospira, are the main etiological agents of leptospirosis in Okinawa. However, their environmental persistence is poorly understood. This study used a combination of bacterial isolation and environmental DNA (eDNA) metabarcoding methods to understand the eco-epidemiology of leptospirosis in this endemic region.
    Findings: Polymerase chain reaction (PCR) characterized twelve human clinical L. interrogans isolates belonging to the P1 subclade "virulent" subgroup and 11 environmental soil isolates of the P1subclade "low virulent" subgroup (genetically related to L. kmetyi, n = 1; L. alstonii, n = 4; L. barantonii, n = 6) from the Yaeyama region targeting four virulence-related genes (lipL32, ligA, ligB and lpxD1). Clinical isolates were PCR positive for at least three targeted genes, while all environmental isolates were positive only for lipL32. Analysis of infected renal epithelial cells with selected clinical and environmental strains, revealed the disassembly of cell-cell junctions for the Hebdomadis clinical strain serogroup. Comparison of leptospiral eDNA during winter and summer identified operational taxonomic units corresponding to the species isolated from soil samples (L. kmetyi and L. barantonii) and additional P2 subclade species (L. licerasiae, L. wolffii-related, among others) that were not detected by soil cultivation. Total Leptospira read counts were higher in summer than in winter and the analysis of leptospiral/animal eDNA relationship suggested Rattus spp. as a potential reservoir animal.
    Conclusion: Our study demonstrated high environmental Leptospira diversity in the Yaeyama region, particularly during summer, when most of the leptospirosis cases are reported. In addition, several Leptospira species with pathogenic potential were identified that have not yet been reported in Yaeyama; however, the environmental persistence of P1 subclade species previously isolated from human clinical cases in this region was absent, suggesting the need of further methodology development and surveillance.
    MeSH term(s) Animals ; Humans ; Japan/epidemiology ; Leptospira ; Leptospirosis/epidemiology ; Leptospirosis/microbiology ; Rats ; Serogroup ; Zoonoses/microbiology
    Language English
    Publishing date 2022-03-31
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2429704-5
    ISSN 1935-2735 ; 1935-2735
    ISSN (online) 1935-2735
    ISSN 1935-2735
    DOI 10.1371/journal.pntd.0010234
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Application of titanium and titanium alloys to fixed dental prostheses.

    Koizumi, Hiroyasu / Takeuchi, Yoshimasa / Imai, Hideyuki / Kawai, Tatsushi / Yoneyama, Takayuki

    Journal of prosthodontic research

    2019  Volume 63, Issue 3, Page(s) 266–270

    Abstract: Purpose: Titanium and titanium alloys are one of the main metallic materials in the medical and dental fields because of their biocompatibility. In this review, the application of titanium and its alloys as the substitute materials for Ag-Pd-Au alloy in ...

    Abstract Purpose: Titanium and titanium alloys are one of the main metallic materials in the medical and dental fields because of their biocompatibility. In this review, the application of titanium and its alloys as the substitute materials for Ag-Pd-Au alloy in the casting of fixed dental prostheses was examined.
    Study selection: A reference search was performed through PubMed based on the keywords titanium, titanium alloy, and dental casting. Other relevant references were obtained from the citation in the articles.
    Results: The dental casting technology for titanium has already been developed for clinical use, which enables the use of appropriate casting machines and investment materials for titanium and its alloys available commercially. The mechanical properties, castability, and corrosion resistance of titanium and titanium alloys were reported to be comparable or superior to the conventional dental alloys. Clinical researches reported that titanium and Ti-6Al-7Nb alloy casings showed suitable quality for clinical application.
    Conclusion: Titanium and its alloys can be the substitute materials for Ag-Pd-Au alloy, and should be considered worthy of qualifying for the dental insurance coverage.
    MeSH term(s) Alloys ; Dental Alloys ; Dental Prosthesis ; Materials Testing ; Surface Properties ; Titanium
    Chemical Substances Alloys ; Dental Alloys ; Titanium (D1JT611TNE)
    Language English
    Publishing date 2019-05-27
    Publishing country Japan
    Document type Journal Article ; Review
    ZDB-ID 2470657-7
    ISSN 2212-4632 ; 1883-1958
    ISSN (online) 2212-4632
    ISSN 1883-1958
    DOI 10.1016/j.jpor.2019.04.011
    Database MEDical Literature Analysis and Retrieval System OnLINE

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