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Article ; Online: Effects of

Sato, Soichiro / Arai, Satoshi / Kato, Kumiko / Yoshida, Keisuke / Iwabuchi, Noriyuki / Sagami, Toru / Tanaka, Miyuki

2024 Volume 16, Issue 6

Abstract: Visceral fat accumulation is considered to be associated with a higher risk of chronic diseases. We investigated the effects ... ...

Abstract	Visceral fat accumulation is considered to be associated with a higher risk of chronic diseases. We investigated the effects of
MeSH term(s)	Adult ; Humans ; Bifidobacterium longum ; Bifidobacterium breve ; Overweight/therapy ; Probiotics ; Body Composition ; Bifidobacterium
Language	English
Publishing date	2024-03-13
Publishing country	Switzerland
Document type	Randomized Controlled Trial ; Journal Article
ZDB-ID	2518386-2
ISSN	2072-6643 ; 2072-6643
ISSN (online)	2072-6643
ISSN	2072-6643
DOI	10.3390/nu16060815
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Article: Comparative Study of Postmortem MRI and Pathological Findings in Malignant Brain Tumors.

Saito, Norihiko / Hirai, Nozomi / Koyahara, Yuki / Sato, Sho / Hiramoto, Yu / Fujita, Satoshi / Nakayama, Haruo / Hayashi, Morito / Ito, Keisuke / Iwabuchi, Satoshi

Cureus

2024 Volume 16, Issue 3, Page(s) e56241

Abstract: This study compared magnetic resonance imaging (MRI) findings of postmortem brain specimens with neuropathological findings to evaluate the value of postmortem MRI. Postmortem MRI was performed on five formalin-fixed whole brains with malignant tumors. ... ...

Abstract	This study compared magnetic resonance imaging (MRI) findings of postmortem brain specimens with neuropathological findings to evaluate the value of postmortem MRI. Postmortem MRI was performed on five formalin-fixed whole brains with malignant tumors. Postmortem T2-weighted images detected all neuropathological abnormalities as high-signal regions but also showed histological tumor invasion in areas without edema. Tumor lesions with high necrosis and edema showed high signal intensity on T2-weighted images; in three cases, lesion enlargement was detected on the final prenatal imaging and postmortem MRI. Disease progression immediately before death may have contributed to this difference. In conclusion, the correlation between MRI and neuropathological findings facilitates understanding of the mechanisms responsible for MRI abnormalities. Increased free water due to edema, necrosis, and brain tissue injury can explain the increased signal intensity observed on T2-weighted images. Postmortem MRI may contribute to effective pathology by identifying subtle abnormalities prior to brain dissection.
Language	English
Publishing date	2024-03-15
Publishing country	United States
Document type	Journal Article
ZDB-ID	2747273-5
ISSN	2168-8184
ISSN	2168-8184
DOI	10.7759/cureus.56241
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Article ; Online: QTL analysis of femaleness in monoecious spinach and fine mapping of a major QTL using an updated version of chromosome-scale pseudomolecules.

Yamano, Kaoru / Haseda, Akane / Iwabuchi, Keisuke / Osabe, Takayuki / Sudo, Yuki / Pachakkil, Babil / Tanaka, Keisuke / Suzuki, Yutaka / Toyoda, Atsushi / Hirakawa, Hideki / Onodera, Yasuyuki

PloS one

2024 Volume 19, Issue 2, Page(s) e0296675

Abstract: Although spinach is predominantly dioecious, monoecious plants with varying proportions of female and male flowers are also present. Recently, monoecious inbred lines with highly female and male conditions have been preferentially used as parents for F1- ... ...

Abstract	Although spinach is predominantly dioecious, monoecious plants with varying proportions of female and male flowers are also present. Recently, monoecious inbred lines with highly female and male conditions have been preferentially used as parents for F1-hybrids, rather than dioecious lines. Accordingly, identifying the loci for monoecism is an important issue for spinach breeding. We here used long-read sequencing and Hi-C technology to construct SOL_r2.0_pseudomolecule, a set of six pseudomolecules of spinach chromosomes (total length: 879.2 Mb; BUSCO complete 97.0%) that are longer and more genetically complete than our previous version of pseudomolecules (688.0 Mb; 81.5%). Three QTLs, qFem2.1, qFem3.1, and qFem6.1, responsible for monoecism were mapped to SOL_r2.0_pseudomolecule. qFem3.1 had the highest LOD score and corresponded to the M locus, which was previously identified as a determinant of monoecious expression, by genetic analysis of progeny from female and monoecious plants. The other QTLs were shown to modulate the ratio of female to male flowers in monoecious plants harboring a dominant allele of the M gene. Our findings will enable breeders to efficiently produce highly female- and male-monoecious parental lines for F1-hybrids by pyramiding the three QTLs. Through fine-mapping, we narrowed the candidate region for the M locus to a 19.5 kb interval containing three protein-coding genes and one long non-coding RNA gene. Among them, only RADIALIS-like-2a showed a higher expression in the reproductive organs, suggesting that it might play a role in reproductive organogenesis. However, there is no evidence that it is involved in the regulation of stamen and pistil initiation, which are directly related to the floral sex differentiation system in spinach. Given that auxin is involved in reproductive organ formation in many plant species, genes related to auxin transport/response, in addition to floral organ formation, were identified as candidates for regulators of floral sex-differentiation from qFem2.1 and qFem6.1.
MeSH term(s)	Spinacia oleracea/genetics ; Plant Breeding ; Quantitative Trait Loci/genetics ; Chromosomes, Plant/genetics ; Indoleacetic Acids
Chemical Substances	Indoleacetic Acids
Language	English
Publishing date	2024-02-23
Publishing country	United States
Document type	Journal Article
ZDB-ID	2267670-3
ISSN	1932-6203 ; 1932-6203
ISSN (online)	1932-6203
ISSN	1932-6203
DOI	10.1371/journal.pone.0296675
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Article ; Online: A regionally specific drinking custom 'Otōri' and its association with alcohol consumption/alcohol use disorders: a cross-sectional study.

Sugiyama, Yoshifumi / Yoshimoto, Hisashi / Iwabuchi, Keisuke / Matsushima, Masato

BMJ open

2021 Volume 11, Issue 5, Page(s) e041738

Abstract: Objectives: The primary objective was to describe the characteristics of Otōri, a regionally specific drinking custom in the Miyakojima region of Okinawa, Japan, and its participants. The secondary objective was to clarify the distribution of alcohol ... ...

Abstract	Objectives: The primary objective was to describe the characteristics of Otōri, a regionally specific drinking custom in the Miyakojima region of Okinawa, Japan, and its participants. The secondary objective was to clarify the distribution of alcohol consumption/alcohol use disorders as measured by the Alcohol Use Disorders Identification Test (AUDIT) and its association with the frequency of engagement in Otōri per month. Design: Cross-sectional study. Setting: Tarama Island, a remote island in Okinawa, Japan. Participants: Individuals who lived on Tarama Island, participated in a mass general health check or mass influenza vaccination programme, were aged ≥20 years and had decision-making capacity were eligible to participate. Primary outcome measures: Alcohol consumption/alcohol use disorders as measured by the AUDIT, frequency of engagement in Otōri per month, settings in which people engage in Otōri and attitudes toward Otōri. Results: Among 478 eligible participants, 401 answered the questionnaire. Approximately 15% reported attitudes toward Otōri of 'like' or 'somewhat like'; around 80% of these participants were middle-aged to older adult men. Compared with the national average, a higher percentage of people (9.2% and 40.9% of women and men, respectively) had AUDIT scores indicating 'hazardous drinking or more', which was associated with 'low or intermediate frequency' and 'high frequency' of engagement in Otōri per month (ORs of 7.626 and 20.321, respectively). Conclusions: Social obligation generated by some community members could pressure most of the population into participating in Otōri, possibly leading to a higher percentage of people engaging in hazardous/harmful alcohol consumption and alcohol dependence. However, healthcare professionals should carefully consider the beneficial and detrimental effects of the custom on biomedical and social conditions and avoid advocating to promote or abolish the custom by only highlighting one aspect.
MeSH term(s)	Aged ; Alcohol Drinking/epidemiology ; Alcoholism/epidemiology ; Cross-Sectional Studies ; Female ; Humans ; Japan/epidemiology ; Male ; Middle Aged ; Surveys and Questionnaires
Language	English
Publishing date	2021-05-13
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2599832-8
ISSN	2044-6055 ; 2044-6055
ISSN (online)	2044-6055
ISSN	2044-6055
DOI	10.1136/bmjopen-2020-041738
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Article ; Online: A regionally specific drinking custom ‘Otōri’ and its association with alcohol consumption/alcohol use disorders

Masato Matsushima / Yoshifumi Sugiyama / Hisashi Yoshimoto / Keisuke Iwabuchi

BMJ Open, Vol 11, Iss

a cross-sectional study

2021 Volume 5

Abstract: Objectives The primary objective was to describe the characteristics of Otōri, a regionally specific drinking custom in the Miyakojima region of Okinawa, Japan, and its participants. The secondary objective was to clarify the distribution of alcohol ... ...

Abstract	Objectives The primary objective was to describe the characteristics of Otōri, a regionally specific drinking custom in the Miyakojima region of Okinawa, Japan, and its participants. The secondary objective was to clarify the distribution of alcohol consumption/alcohol use disorders as measured by the Alcohol Use Disorders Identification Test (AUDIT) and its association with the frequency of engagement in Otōri per month.Design Cross-sectional study.Setting Tarama Island, a remote island in Okinawa, Japan.Participants Individuals who lived on Tarama Island, participated in a mass general health check or mass influenza vaccination programme, were aged ≥20 years and had decision-making capacity were eligible to participate.Primary outcome measures Alcohol consumption/alcohol use disorders as measured by the AUDIT, frequency of engagement in Otōri per month, settings in which people engage in Otōri and attitudes toward Otōri.Results Among 478 eligible participants, 401 answered the questionnaire. Approximately 15% reported attitudes toward Otōri of ‘like’ or ‘somewhat like’; around 80% of these participants were middle-aged to older adult men. Compared with the national average, a higher percentage of people (9.2% and 40.9% of women and men, respectively) had AUDIT scores indicating ‘hazardous drinking or more’, which was associated with ‘low or intermediate frequency’ and ‘high frequency’ of engagement in Otōri per month (ORs of 7.626 and 20.321, respectively).Conclusions Social obligation generated by some community members could pressure most of the population into participating in Otōri, possibly leading to a higher percentage of people engaging in hazardous/harmful alcohol consumption and alcohol dependence. However, healthcare professionals should carefully consider the beneficial and detrimental effects of the custom on biomedical and social conditions and avoid advocating to promote or abolish the custom by only highlighting one aspect.
Keywords	Medicine ; R
Subject code	150
Language	English
Publishing date	2021-06-01T00:00:00Z
Publisher	BMJ Publishing Group
Document type	Article ; Online
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Article ; Online: Amyloid-β prediction machine learning model using source-based morphometry across neurocognitive disorders.

Momota, Yuki / Bun, Shogyoku / Hirano, Jinichi / Kamiya, Kei / Ueda, Ryo / Iwabuchi, Yu / Takahata, Keisuke / Yamamoto, Yasuharu / Tezuka, Toshiki / Kubota, Masahito / Seki, Morinobu / Shikimoto, Ryo / Mimura, Yu / Kishimoto, Taishiro / Tabuchi, Hajime / Jinzaki, Masahiro / Ito, Daisuke / Mimura, Masaru

Scientific reports

2024 Volume 14, Issue 1, Page(s) 7633

Abstract: Previous studies have developed and explored magnetic resonance imaging (MRI)-based machine learning models for predicting Alzheimer's disease (AD). However, limited research has focused on models incorporating diverse patient populations. This study ... ...

Abstract	Previous studies have developed and explored magnetic resonance imaging (MRI)-based machine learning models for predicting Alzheimer's disease (AD). However, limited research has focused on models incorporating diverse patient populations. This study aimed to build a clinically useful prediction model for amyloid-beta (Aβ) deposition using source-based morphometry, using a data-driven algorithm based on independent component analyses. Additionally, we assessed how the predictive accuracies varied with the feature combinations. Data from 118 participants clinically diagnosed with various conditions such as AD, mild cognitive impairment, frontotemporal lobar degeneration, corticobasal syndrome, progressive supranuclear palsy, and psychiatric disorders, as well as healthy controls were used for the development of the model. We used structural MR images, cognitive test results, and apolipoprotein E status for feature selection. Three-dimensional T1-weighted images were preprocessed into voxel-based gray matter images and then subjected to source-based morphometry. We used a support vector machine as a classifier. We applied SHapley Additive exPlanations, a game-theoretical approach, to ensure model accountability. The final model that was based on MR-images, cognitive test results, and apolipoprotein E status yielded 89.8% accuracy and a receiver operating characteristic curve of 0.888. The model based on MR-images alone showed 84.7% accuracy. Aβ-positivity was correctly detected in non-AD patients. One of the seven independent components derived from source-based morphometry was considered to represent an AD-related gray matter volume pattern and showed the strongest impact on the model output. Aβ-positivity across neurological and psychiatric disorders was predicted with moderate-to-high accuracy and was associated with a probable AD-related gray matter volume pattern. An MRI-based data-driven machine learning approach can be beneficial as a diagnostic aid.
MeSH term(s)	Humans ; Brain/pathology ; Amyloid beta-Peptides ; Magnetic Resonance Imaging/methods ; Alzheimer Disease/diagnostic imaging ; Alzheimer Disease/pathology ; Machine Learning ; Cognitive Dysfunction/diagnostic imaging ; Cognitive Dysfunction/pathology ; Apolipoproteins
Chemical Substances	Amyloid beta-Peptides ; Apolipoproteins
Language	English
Publishing date	2024-04-01
Publishing country	England
Document type	Journal Article
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-024-58223-3
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Article ; Online: GPRC5B (G protein-coupled receptor class C group 5 member B) suppresses glucose starvation-induced apoptosis in head-and-neck squamous cell carcinoma.

Kanamori, Keisuke / Ozawa, Shigeyuki / Iwabuchi, Hiroshi / Ikoma, Takeharu / Suzuki, Kenji / Tanaka, Kae / Yoshimura Sawai, Natsuko / Abe, Takahiro / Kato, Yasumasa / Hata, Ryu-Ichiro / Kobayashi, Masaru

Biomedical research (Tokyo, Japan)

2023 Volume 44, Issue 1, Page(s) 1–7

Abstract: G protein-coupled receptor class C group 5 member B (GPRC5B) is involved in extracellular glucose sensing, glucose metabolism, and insulin resistance. Many cancers require glucose at high concentrations to survive and grow. We have investigated the ... ...

Abstract	G protein-coupled receptor class C group 5 member B (GPRC5B) is involved in extracellular glucose sensing, glucose metabolism, and insulin resistance. Many cancers require glucose at high concentrations to survive and grow. We have investigated the association between tumour GPRC5B expression and the prognosis for patients with cancer, including head-and-neck squamous cell carcinoma (HNSCC), using data from The Human Protein Atlas. The 5-year survival rate was significantly reduced in patients with HNSCC, gastric, pancreatic, colorectal, and breast cancers if their tumours exhibited high levels of GPRC5B expression. The role of GPRC5B in glucose metabolism was assessed using six HNSCC cell lines with varying levels of GPRC5B expression. High levels of GPRC5B expression were found to favour rapid cell growth. The viability of an HNSCC cell line with normal and transfected GPRC5B expression was also assessed and no differences were observed under standard culture conditions. However, under glucose-deficient culture conditions, GPRC5B-overexpressing cells exhibited increased viability and reduced apoptosis. The results highlight the association between high GPRC5B expression and poor 5-year survival rates in patients with various cancers, including HNSCC. Furthermore, we have demonstrated that GPRC5B supports cancer cell survival under glucose-depleted conditions and could be a target molecule for cancer therapy.
MeSH term(s)	Humans ; Squamous Cell Carcinoma of Head and Neck/genetics ; Glucose/metabolism ; Receptors, G-Protein-Coupled/genetics ; Receptors, G-Protein-Coupled/metabolism ; Apoptosis/genetics ; Head and Neck Neoplasms/genetics ; Cell Line, Tumor
Chemical Substances	Glucose (IY9XDZ35W2) ; Receptors, G-Protein-Coupled ; GPRC5B protein, human
Language	English
Publishing date	2023-01-19
Publishing country	Japan
Document type	Journal Article
ZDB-ID	604561-3
ISSN	1880-313X ; 0388-6107
ISSN (online)	1880-313X
ISSN	0388-6107
DOI	10.2220/biomedres.44.1
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Article ; Online: Therapeutic potential of ciclesonide inahalation for COVID-19 pneumonia: Report of three cases.

Iwabuchi, Keisuke / Yoshie, Koichiro / Kurakami, Yuichi / Takahashi, Kota / Kato, Yoshio / Morishima, Tsuneo

Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy

2020 Volume 26, Issue 6, Page(s) 625–632

Abstract: No specific and effective anti-viral treatment has been approved for COVID-19 so far. Systemic corticosteroid has been sometimes administered to severe infectious diseases combined with the specific treatment. However, as lack of the specific anti-SARS- ... ...

Abstract	No specific and effective anti-viral treatment has been approved for COVID-19 so far. Systemic corticosteroid has been sometimes administered to severe infectious diseases combined with the specific treatment. However, as lack of the specific anti-SARS-CoV-2 drug, systemic steroid treatment has not been recommended for COVID-19. We report here three cases of the COVID-19 pneumonia successfully treated with ciclesonide inhalation. Rationale of the treatment is to mitigate the local inflammation with inhaled steroid that stays in the lung and to inhibit proliferation of the virus by antiviral activity. Larger and further studies are warranted to confirm the result of these cases.
MeSH term(s)	Administration, Inhalation ; Aged ; Betacoronavirus ; Coronavirus Infections/drug therapy ; Female ; Glucocorticoids/therapeutic use ; Humans ; Lung/diagnostic imaging ; Male ; Pandemics ; Pneumonia, Viral/drug therapy ; Pregnenediones/therapeutic use ; Radiography, Thoracic ; Ships ; Tomography, X-Ray Computed
Chemical Substances	Glucocorticoids ; Pregnenediones ; ciclesonide (S59502J185)
Keywords	covid19
Language	English
Publishing date	2020-04-16
Publishing country	Netherlands
Document type	Case Reports ; Journal Article
ZDB-ID	1355399-9
ISSN	1437-7780 ; 1341-321X
ISSN (online)	1437-7780
ISSN	1341-321X
DOI	10.1016/j.jiac.2020.04.007
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Zs.A 5236: Show issues

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Article ; Online: Detection of SARS-CoV-2 RNA Using RT-qPCR in Saliva Samples and Nasopharyngeal, Lingual, and Buccal Mucosal Swabs.

Sasaki, Tomoyuki / Inoue, Osamu / Ogihara, Shinji / Kubokawa, Kayo / Oishi, Saori / Shirai, Toshiaki / Iwabuchi, Keisuke / Suzuki-Inoue, Katsue

Japanese journal of infectious diseases

2021 Volume 75, Issue 1, Page(s) 102–104

Abstract: Coronavirus disease 2019 is diagnosed based on the detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA in nasopharyngeal swabs or saliva samples using reverse-transcription quantitative polymerase chain reaction. Nasopharyngeal ... ...

Abstract	Coronavirus disease 2019 is diagnosed based on the detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA in nasopharyngeal swabs or saliva samples using reverse-transcription quantitative polymerase chain reaction. Nasopharyngeal swabs should be collected by medical professionals who are covered with full personal protective equipment (PPE), while saliva samples can be collected by patients themselves without any PPE. However, collecting saliva is difficult for people who are unable to follow instructions, including infants or unconscious patients. Owing to the high viscosity of saliva, special attention is required to handle saliva samples in laboratories. To solve these problems, we compared lingual and buccal mucosal swabs (oral swabs) with nasopharyngeal swabs and saliva samples. Among 13 patients who had a positive result for SARS-CoV-2 RNA in their nasopharyngeal swabs, 8 and 10 patients had a positive result for SARS-CoV-2 RNA in their saliva (concordance rate, 61.5%) and oral swabs (76.9%), respectively. Among the eight patients with a positive result for SARS-CoV-2 RNA in saliva, seven (87.5%) had SARS-CoV-2 detected in their oral swabs. We could not obtain saliva samples from four patients, but we found perfect concordance of SARS-CoV-2 positivity between the nasopharyngeal and oral swabs. Therefore, oral swabs can be used for SARS-CoV-2 RNA detection.
MeSH term(s)	COVID-19 ; Humans ; Nasopharynx ; RNA, Viral/genetics ; SARS-CoV-2 ; Saliva ; Specimen Handling
Chemical Substances	RNA, Viral
Language	English
Publishing date	2021-07-30
Publishing country	Japan
Document type	Journal Article
ZDB-ID	1478383-6
ISSN	1884-2836 ; 1344-6304
ISSN (online)	1884-2836
ISSN	1344-6304
DOI	10.7883/yoken.JJID.2021.091
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Article ; Online: Radiation Dose Reduction for Computed Tomography Localizer Radiography Using an Ag Additional Filter.

Nomura, Keiichi / Fujii, Keisuke / Goto, Takahiro / Tsukagoshi, Shinsuke / Ota, Hiroyuki / Iwabuchi, Yuto / Suzuki, Hidenobu / Muramatsu, Yoshihisa / Kobayashi, Tatsushi

Journal of computer assisted tomography

2021 Volume 45, Issue 1, Page(s) 84–92

Abstract: Objective: This study aimed to assess the potential of an Ag additional filter attached to the bow tie filter of a computed tomography (CT) scanner to reduce the radiation dose in CT localizer radiography.: Methods: Radiation doses in CT localizer ... ...

Abstract	Objective: This study aimed to assess the potential of an Ag additional filter attached to the bow tie filter of a computed tomography (CT) scanner to reduce the radiation dose in CT localizer radiography. Methods: Radiation doses in CT localizer radiography with Cu and Ag additional filters were evaluated based on dose measurements and Monte Carlo simulations. Image quality evaluations of an adult torso phantom were performed, and the automatic exposure control performance was evaluated in terms of the water-equivalent thickness estimated from CT localizer radiographs. Results: With the Ag additional filter, effective doses were approximately 72% to 75% lower than those with the Cu additional filter. The image quality and water-equivalent thickness with the Ag additional filter were similar to those with the Cu additional filter. Conclusions: The Ag additional filter helped significantly reduce radiation doses in CT localizer radiography while maintaining image quality and performance.
MeSH term(s)	Adult ; Copper/adverse effects ; Equipment Design ; Humans ; Monte Carlo Method ; Phantoms, Imaging ; Radiation Dosage ; Radiographic Image Interpretation, Computer-Assisted ; Silver/adverse effects ; Tomography, X-Ray Computed/instrumentation ; Torso/diagnostic imaging
Chemical Substances	Silver (3M4G523W1G) ; Copper (789U1901C5)
Language	English
Publishing date	2021-01-20
Publishing country	United States
Document type	Journal Article
ZDB-ID	80392-3
ISSN	1532-3145 ; 0363-8715
ISSN (online)	1532-3145
ISSN	0363-8715
DOI	10.1097/RCT.0000000000001026
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