147,298 results match your criteria islands japan

Parenchyma underlies the interspecific variation of xylem hydraulics and carbon storage across 15 woody species on a subtropical island in Japan.

Tree Physiol 2021 Jul 29. Epub 2021 Jul 29.

Center for Ecological Research, Kyoto University, 509-3 Hirano 2-Chome, Otsu, Shiga 520-2113, Japan.

Parenchyma is an important component of the secondary xylem. It has multiple functions and its fraction is known to vary substantially across angiosperm species. However, the physiological significance of this variation is not yet fully understood. Read More

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Endoscopic submucosal dissection endoscopic mucosal resection for colorectal polyps: A meta-analysis and meta-regression with single arm analysis.

World J Gastroenterol 2021 Jul;27(25):3925-3939

Department of Medicine, National University Hospital, Singapore 119074, Singapore.

Background: Endoscopic submucosal dissection (ESD) has shown to be effective in management of colorectal neoplasm in the Asian countries, while its implementation in Western countries where endoscopic mucosal resection (EMR) is preferred is still debatable.

Aim: To compare the surgical, histological, and oncological outcomes between ESD and EMR in the treatment of colorectal polyps, with subgroup analysis comparing the efficacy of ESD and EMR between Japan and the rest of the world.

Methods: Embase and Medline databases were searched from inception to October 2020 in accordance with PRISMA guidelines for studies comparing , complete resection, margin involvement, resection time, need for additional surgery, complications, and recurrence rate of ESD with EMR. Read More

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Characterization of structural changes in modern and archaeological burnt bone: Implications for differential preservation bias.

PLoS One 2021 28;16(7):e0254529. Epub 2021 Jul 28.

School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, AZ, United States of America.

Structural and thermodynamic factors which may influence burnt bone survivorship in archaeological contexts have not been fully described. A highly controlled experimental reference collection of fresh, modern bone burned in temperature increments 100-1200˚C is presented here to document the changes to bone tissue relevant to preservation using Fourier transform infrared spectroscopy and X-ray diffraction. Specific parameters investigated here include the rate of organic loss, amount of bone mineral recrystallization, and average growth in bone mineral crystallite size. Read More

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Regular ordering of spherical microdomains in dewetted monolayer islands induced by thermal annealing of spin-coated ultrathin films of a triblock copolymer.

Soft Matter 2021 Jul 27. Epub 2021 Jul 27.

Department of Biobased Materials Science, Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan. and Department of Chemical Engineering, Indian Institute of Technology Guwahati, Kamrup, Assam 781-039, India.

We report here spontaneous dewetting of a spin-coated, ultra-thin film of a sphere-forming block copolymer (BCP) upon thermal annealing, and that the dewetting resulted in the formation of plateau-shaped islands with a constant thickness consistent with the thickness of a monolayer, in which the spherical microdomains are regularly ordered two-dimensionally in a deformed hexagonal lattice. Thus, the spontaneous dewetting was ascribed to a mismatch between the initial spin-coated film thickness with respect to the monolayer thickness. Such dewetting of sphere-forming BCPs is considered to be deterministic compared to the cases of lamella- and cylinder-forming BCPs, as incommensuration in thickness is avoided by attaining perpendicular orientation without dewetting. Read More

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Molecular phylogenetic assessment of -complex (Annelida: Serpulidae) from the Japanese Archipelago.

PeerJ 2021 14;9:e11746. Epub 2021 Jul 14.

Seto Marine Biological Laboratory, Field Science Education and Research Center, Kyoto University, Shirahama, Nishimuro, Wakayama, Japan.

(Annelida: Serpulidae) was recognized as being widely distributed both in the Pacific and Atlantic Oceans. However, the sampling records far from its type locality (South Africa) have been questioned. Actually, recent molecular phylogenetic studies showed that contains genetically distinct species. Read More

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Diversification of mandarin citrus by hybrid speciation and apomixis.

Nat Commun 2021 07 26;12(1):4377. Epub 2021 Jul 26.

DOE Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.

The origin and dispersal of cultivated and wild mandarin and related citrus are poorly understood. Here, comparative genome analysis of 69 new east Asian genomes and other mainland Asian citrus reveals a previously unrecognized wild sexual species native to the Ryukyu Islands: C. ryukyuensis sp. Read More

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Genomic evidence for speciation with gene flow in broadcast spawning marine invertebrates.

Mol Biol Evol 2021 Jul 26. Epub 2021 Jul 26.

Fisheries Laboratory, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 2971-4, Bentenjima, Maisaka, 431-0214, Japan Hamamatsu, Shizuoka.

How early stages of speciation in free-spawning marine invertebrates proceeds is poorly understood. The Western Pacific abalones, Hatiois discus, H. madaka, and H. Read More

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Type specimen sequencing, multilocus analyses, and species delimitation methods recognize the cosmopolitan Corallina berteroi and establish the northern Japanese C. yendoi sp. nov. (Corallinaceae, Rhodophyta).

J Phycol 2021 Jul 26. Epub 2021 Jul 26.

Laboratorio de Ecosistemas Marinos Antárticos y Sub-antárticos (LEMAS), Universidad de Magallanes, Punta Arenas, Chile.

A partial rbcL sequence of the lectotype specimen of Corallina berteroi shows that it is the earliest available name for C. ferreyrae. Multilocus species delimitation analyses (ABGD, SPN, GMYC, bPTP and BPP) using independent or concatenated COI, psbA and rbcL sequences recognized one, two or three species in this complex, but only with weak support for each species hypothesis. Read More

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sp. nov., a pathogen causing bacterial rot of lettuce in Japan.

Int J Syst Evol Microbiol 2021 Jul;71(7)

Research Center of Genetic Resources, National Agriculture and Food Research Organization (NARO), 2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602, Japan.

Two phytopathogenic bacteria, MAFF 301380 and MAFF 301381, isolated from rot lesions of lettuce ( L. var. L. Read More

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Information flow to increase support for tidal energy development in remote islands of a developing country: agent-based simulation of information flow in Flores Timur Regency, Indonesia.

Energy Sustain Soc 2021 21;11(1):26. Epub 2021 Jul 21.

Department of Ocean Technology, Policy, and Environment, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba Japan.

Background: Public awareness is crucial for successful deployment of tidal energy, a renewable energy source that can provide clean electricity to remote islands. However, considering public attitudes on tidal energy are not well known, especially in developing countries, a barrier exists in implementing public engagement strategies. This study aims to contribute by identifying strategies for information provision-the initial step in public engagement-and estimate how these can be engaged to enhance support for tidal energy among the local public in a remote area of a developing country, in this case, Flores Timur Regency, Indonesia, considering their socio-cultural background. Read More

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The current clinical practice of general orthopaedic surgeons in the treatment of lateral ankle sprain: a questionnaire survey in Miyazaki, Japan.

BMC Musculoskelet Disord 2021 Jul 24;22(1):636. Epub 2021 Jul 24.

Division of Orthopaedic Surgery, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Miyazaki, Kiyotake, 889-1692, Japan.

Background: Lateral ankle sprain (LAS) is one of the most common musculoskeletal injuries. Numerous studies regarding LAS have been performed. However, there are few studies evaluating the current clinical practice of orthopaedic surgeons regarding LAS. Read More

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The 30-s chair stand test can be a useful tool for screening sarcopenia in elderly Japanese participants.

BMC Musculoskelet Disord 2021 Jul 24;22(1):639. Epub 2021 Jul 24.

School of Health and Sports Science, Juntendo University, 1-1 Hirakagakuendai, Inzai, Chiba, 270-1695, Japan.

Background: Low muscle strength has been focused on as an essential characteristic of sarcopenia, and the 30-s chair stand test (CS-30) could be a particularly useful test for assessing muscle strength. While it is speculated to be a beneficial tool for the assessment of sarcopenia, this remains to be verified. In this study, we examined the reliability and optimal diagnostic score of the CS-30 for assessing sarcopenia in elderly Japanese participants. Read More

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Two New Halogenated Compounds from the Marine Red Alga Laurencia nipponica Yamada from the Kunashiri and Etorofu Islands.

Chem Biodivers 2021 Jul 23. Epub 2021 Jul 23.

National Museum, Chiba, 123 Yoshio,, 299-5242, Katsuura,, JAPAN.

The red alga Laurencia nipponica comprises various chemical races distributed relative to the ocean current in Japanese coastal areas. We investigated the chemical compositions and chemical races of L . nipponica distributed from the Kunashiri and Etorofu Islands, the confluence of the Soya warm current and Oya-shio cold current. Read More

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Impact of overtime working and social interaction on the deterioration of mental well-being among full-time workers during the COVID-19 pandemic in Japan: Focusing on social isolation by household composition.

J Occup Health 2021 Jan;63(1):e12254

The Jikei University School of Medicine, Tokyo, Japan.

Objectives: The coronavirus disease (COVID-19) pandemic has forced many employees to alter both their work style and lifestyle. This study aimed to examine how the combination of changes in overtime working hours and social interaction affects the full-time employees' mental well-being, focusing on the difference in household composition.

Methods: In November 2020, we conducted a cross-sectional Internet survey that included 4388 Japanese men and women aged 25-64 years, who continued the same full-time job during the pandemic. Read More

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January 2021

Physician visits and medication prescriptions for major chronic diseases during the COVID-19 pandemic in Japan: retrospective cohort study.

BMJ Open 2021 07 23;11(7):e050938. Epub 2021 Jul 23.

Division of General Internal Medicine and Health Service Research, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.

Objectives: There have been concerns that patients with chronic conditions may be avoiding in-person physician visits due to fear of COVID-19, leading to lower quality of care. We aimed to investigate changes in physician visits and medication prescriptions for chronic diseases before and during the COVID-19 pandemic at the population level.

Design: Retrospective cohort study. Read More

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An exploratory assessment of the applicability of direct-to-consumer genetic testing to translational research in Japan.

BMC Res Notes 2021 Jul 23;14(1):282. Epub 2021 Jul 23.

Daiichi Sankyo Co. Ltd, Tokyo, Japan.

Objective: In order to assess the applicability of a direct-to-consumer (DTC) genetic testing to translational research for obtaining new knowledge on relationships between drug target genes and diseases, we examined possibility of these data by associating SNPs and disease related phenotype information collected from healthy individuals.

Results: A total of 12,598 saliva samples were collected from the customers of commercial service for SNPs analysis and web survey were conducted to collect phenotype information. The collected dataset revealed similarity to the Japanese data but distinguished differences to other populations of all dataset of the 1000 Genomes Project. Read More

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Mental Health Difficulties and Countermeasures during the Coronavirus Disease Pandemic in Japan: A Nationwide Questionnaire Survey of Mental Health and Psychiatric Institutions.

Int J Environ Res Public Health 2021 07 8;18(14). Epub 2021 Jul 8.

National Center for Cognitive Behavior Therapy and Research, National Center of Neurology and Psychiatry, Tokyo 1878551, Japan.

The number of people with coronavirus disease (COVID-19) has been increasing worldwide. Anxiety about potential infection, fear of severe illness, death, economic problems, and loneliness and isolation brought on by social distancing are increasingly being experienced by people. Therefore, it is imperative to address and improve such mental health-related problems during COVID-19. Read More

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Mental Health Crisis and Stress Coping among Healthcare College Students Momentarily Displaced from Their Campus Community Because of COVID-19 Restrictions in Japan.

Int J Environ Res Public Health 2021 Jul 6;18(14). Epub 2021 Jul 6.

Graduate School of Medical Sciences, Kitasato University, 1-15-1, Kitasato, Minami-ku, Sagamihara 252-0373, Kanagawa, Japan.

College students are one of the most affected groups by self-quarantine due to COVID-19, as they may live in loneliness and anxiety, increasing their risk of mental health crisis. This study aimed to identify risk factors for poor mental health and stress coping strategies among healthcare college students during the COVID-19 pandemic in Japan. A cross-sectional survey was conducted over 7 consecutive days starting on 28 April 2020 using a web-based questionnaire. Read More

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A spontaneous thymic carcinosarcoma in a young Sprague Dawley rat.

J Toxicol Pathol 2021 Jul 16;34(3):235-239. Epub 2021 Apr 16.

Central Research Laboratory, Research & Development, Seikagaku Corporation, 1253 Tateno 3-chome, Higashiyamato-shi, Tokyo 207-0021, Japan.

We encountered a case of spontaneous thymic carcinosarcoma in a young Crl:CD (Sprague Dawley) rat. Grossly, a white multinodular mass replaced the thymus in the thoracic cavity. Histologically, multiple nodules were separated by fibrous stroma, and each nodule included isolated regions that were composed of epithelial or non-epithelial tumor cells. Read More

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Association between , and () expression and flowering regulation in Japanese wild radish.

AoB Plants 2021 Aug 23;13(4):plab039. Epub 2021 Jun 23.

Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, 606-8501, Japan.

Flowering is an important step in the life cycle of plants and indicates adaptability to external climatic cues such as temperature and photoperiod. We investigated the expression patterns of core genes related to flowering-time regulation in Japanese wild radish ( var. ) with different vernalization requirements (obligate and facultative) and further identified climatic cues that may act as natural selective forces. Read More

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The use of text mining to detect key shifts in Japanese first-year medical student professional identity formation through early exposure to non-healthcare hospital staff.

BMC Med Educ 2021 Jul 20;21(1):389. Epub 2021 Jul 20.

Center for Medical Education and Career Development, Fukushima Medical University, 1 Hikarigaoka, Fukushima, 960-1295, Japan.

Background: Professional identity formation is nurtured through socialization, driven by interaction with role models, and supported through early clinical exposure (ECE) programmes. Non-healthcare professionals form part of the hospital community but are external to the culture of medicine, with their potential as role models unexplored. We employed text mining of student reflective assignments to explore the impact of socialization with non-healthcare professionals during ECE. Read More

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Factors affecting in-hospital mortality of non-tuberculous mycobacterial pulmonary disease.

BMC Infect Dis 2021 Jul 20;21(1):698. Epub 2021 Jul 20.

Department of Respiratory Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.

Background: The incidence and prevalence of non-tuberculous mycobacterial pulmonary disease (NTM-PD) are reportedly increasing in many parts of the world. However, there are few published data on NTM-PD-related death. Using data from a national inpatient database in Japan, we aimed in this study to identify the characteristics of patients with NTM-PD and clinical deterioration and to identify risk factors for in-hospital mortality. Read More

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Frailty Status Predicts New Long-term Care Insurance Certification in Hepatitis C Patients Receiving Antiviral Therapy.

Anticancer Res 2021 Aug;41(8):4127-4131

Department of Gastroenterology and Hematology, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan

Background/aim: Direct-acting antiviral (DAA) therapies for patients with hepatitis C virus (HCV) infection deliver higher cure rates and lower frequencies of adverse events than existing therapies, though DAA treatment costs $45,000-64,000 in Japan. The prognosis of patients who require new long-term care insurance (LTCI) certification is inferior to that of patients who do not. Here, we clarify the factors associated with new LTCI certification in elderly patients with HCV infection who undergo DAA therapy. Read More

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Prevalence of COVID-19 and the Continued Citizen-Based Control in Japan.

Adv Exp Med Biol 2021 ;1327:25-33

Department of Health Science, School of Sports & Health Science, Daito Bunka University, Higashi-matsuyama, Saitama, Japan.

Since an outbreak of COVID-19 was detected among the crew and passengers of the Diamond Princess cruise ship in early 2020, the total number of cases of SARS-CoV-2 has surpassed 440,000 in Japan. However, that number remains small compared with other countries, such as the United States, a few European countries, and China. Despite the Japanese government not imposing a lockdown or implementing large-scale testing at the municipal level, the country has managed to contain the smaller outbreaks. Read More

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Mizuho Nagao

Arerugi 2021;70(5):367-371

Institute for Clinical Research, National Hospital Organization Mie National Hospital.

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Need of care in interpreting Google Trends-based COVID-19 infodemiological study results: potential risk of false-positivity.

BMC Med Res Methodol 2021 07 18;21(1):147. Epub 2021 Jul 18.

Department of Neurology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan.

Background: Google Trends (GT) is being used as an epidemiological tool to study coronavirus disease (COVID-19) by identifying keywords in search trends that are predictive for the COVID-19 epidemiological burden. However, many of the earlier GT-based studies include potential statistical fallacies by measuring the correlation between non-stationary time sequences without adjusting for multiple comparisons or the confounding of media coverage, leading to concerns about the increased risk of obtaining false-positive results. In this study, we aimed to apply statistically more favorable methods to validate the earlier GT-based COVID-19 study results. Read More

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[Deep learning-based dental plaque detection on permanent teeth and the influenced factors].

Zhonghua Kou Qiang Yi Xue Za Zhi 2021 Jul;56(7):665-671

Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China.

To develop an artificial intelligence system for detecting dental plaque on permanent teeth and find the influenced factors. Photos of the labial or buccal surfaces of the permanent teeth were taken by using an intraoral camera (1 280×960 pixels; TPC Ligang, Shenzhen, China) before and after applying the plaque-disclosing agent (Cimedical, Japan) in 25 volunteers [12 males, 13 femals, aged (23±3) years] recruided in accordance with the inclusion criteria from the students of Peking University School of Stomatology from October 2018 to June 2019. A total of 549 groups of photos were captured and then divided into a training dataset containing 440 groups of photos and a test dataset including 109 groups of photos. Read More

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Estimating COVID-19 cases infected with the variant alpha (VOC 202012/01): an analysis of screening data in Tokyo, January-March 2021.

Theor Biol Med Model 2021 07 17;18(1):13. Epub 2021 Jul 17.

Kyoto University School of Public Health, Yoshida-Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan.

Background: In Japan, a part of confirmed patients' samples have been screened for the variant of concern (VOC), including the variant alpha with N501Y mutation. The present study aimed to estimate the actual number of cases with variant alpha and reconstruct the epidemiological dynamics.

Methods: The number of cases with variant alpha out of all PCR confirmed cases was estimated, employing a hypergeometric distribution. Read More

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The role of toxic planocerid flatworm larvae on tetrodotoxin accumulation in marine bivalves.

Aquat Toxicol 2021 Jul 6;237:105908. Epub 2021 Jul 6.

Department of Marine Science and Resources, Nihon University, Fujisawa, Kanagawa 252-0880, Japan. Electronic address:

Tetrodotoxin (TTX), also known as pufferfish toxin, has been detected in marine edible bivalves worldwide. In this study, several bivalve species, Azumapecten farreri subsp. akazara, Patinopecten yessoensis and Mytilus galloprovincialis, collected from the Pacific side of the northern Japanese Islands, were studied for the accumulation of TTX in the presence of toxic planocerid larvae. Read More

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Evolution of rhizobial symbiosis islands through insertion sequence-mediated deletion and duplication.

ISME J 2021 Jul 16. Epub 2021 Jul 16.

Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-Ku, Sendai, 980-8577, Japan.

Symbiosis between organisms influences their evolution via adaptive changes in genome architectures. Immunity of soybean carrying the Rj2 allele is triggered by NopP (type III secretion system [T3SS]-dependent effector), encoded by symbiosis island A (SymA) in B. diazoefficiens USDA122. Read More

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