Publications by authors named "Tomida S"

Article Synopsis
  • - Emerging research suggests that reduced contractility in aortic smooth muscle cells could play a role in the development of aortic dissection, based on detailed studies of familial thoracic aortic conditions.
  • - Unlike the well-studied L-type calcium channels, recent findings indicate that T-type voltage-gated calcium channels may be more closely linked to the impaired contraction in vascular smooth muscle.
  • - The review explores various aspects of T-type calcium channels, including their structure, function, and how their decreased activity may lead to less effective muscle contraction, while also discussing the use of multi-omic techniques in this research.
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Incontinence-associated dermatitis (IAD) is one of the most serious complications in older people with incontinence. Controlling urine property in absorbent pads could be effective for preventing IAD caused by bacterial urine. However, no animal model has been established to evaluate their effectiveness.

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The prospective cohort study in a large Japanese population suggested that metabolic phenotypes are important risk factors for total and some site-specific cancers in Japanese adults. Moreover, the risk of each site-specific cancer may differ according to metabolic phenotypes.

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  • Idiopathic multicentric Castleman disease (iMCD) is a subtype of Castleman disease that is not linked to KSHV/HHV8 and is categorized into three types: iMCD-IPL, iMCD-TAFRO, and iMCD-NOS.
  • The primary treatment is IL-6 inhibitors, yet patients with iMCD-TAFRO and NOS often show resistance, indicating the influence of other cytokines in their pathology.
  • A transcriptome analysis revealed increased expression of various cytokine-related genes in iMCD-TAFRO/NOS, suggesting enhanced inflammatory signaling pathways, particularly the JAK-STAT and MAPK pathways, contributing to a potential cytokine storm.
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Imatinib may be a useful targeted agent for patients with advanced gastric adenocarcinoma who have KIT mutations.

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Aim: Senescent cells, inducing a senescence-associated secretory phenotype (SASP), lead to chronic inflammation in hard-to-heal wound tissue. However, eliminating senescent cells may impede normal wound healing due to their important role in the wound healing mechanism. Accordingly, we focused on wound exudates in hard-to-heal wounds, which contain many inflammation biomarkers consistent with SASP.

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  • The study focuses on understanding how lung cancer cells develop resistance to crizotinib, a MET tyrosine kinase inhibitor, particularly in cases of MET amplification.
  • Researchers established two MET-amplified lung cancer cell lines, EBC-1 and H1993, to explore the mechanisms behind this acquired resistance, using genomic and transcriptomic data for analysis.
  • Findings revealed various resistance mechanisms, including SERPINE1 overexpression in EBC-1 cells and potential therapies like PAI-1 inhibitors or MEK inhibitors for overcoming resistance in these cancer cells.
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  • Researchers studied immune-checkpoint molecules in the blood of advanced non-small cell lung cancer (NSCLC) patients to see how they correlate with response to PD-1/PD-L1 blockade therapy.
  • They found that higher levels of these immune factors, particularly in patients with immune-reactive tumors, were linked to a lack of response to therapy.
  • The study suggests combining measurements of soluble immune molecules with tumor characteristics can better predict which patients may not benefit from PD-1/PD-L1 blockade treatments.
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Background: Eating speed has been implicated as a leading cause of metabolic syndrome (MetS). However, it is difficult to break the habit of eating fast. Since coffee consumption is associated with a lower risk of MetS, we investigated the association between eating speed and the amount of coffee consumed with MetS.

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Aim: The combination of dynapenia (age-related muscle weakness) and obesity is referred to as dynapenic obesity. We examined the associations between dynapenic obesity and cortical bone thickness and trabecular bone density.

Methods: The participants were 797 community-dwelling postmenopausal women (with an average age of 62.

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Background: Selective activator protein (AP)-1 inhibitors are potentially promising therapeutic agents for atopic dermatitis (AD) because AP-1 is an important regulator of skin inflammation. However, few studies have investigated the effect of topical application of AP-1 inhibitors in treating inflammatory skin disorders.

Methods: Immunohistochemistry was conducted to detect phosphorylated AP-1/c-Jun expression of skin lesions in AD patients.

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Background: Core fucose, a structure added to the reducing end N-acetylglucosamine of N-glycans, has been shown to regulate various physiological and pathological processes, including melanoma metastasis, exacerbation of chronic obstructive pulmonary disease, and severe outcomes in COVID-19.

Scope Of Review: Recent research has shed light on regulation of the activity and subcellular localization of a1,6-fucosyltransferase (FUT8), the glycosyltransferase responsible for core fucose biosynthesis, unraveling the mechanisms for controlling core fucosylation in vivo.

Major Conclusions: This review summarizes the various features of FUT8, including its domains, structures, and substrate specificity.

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Heart failure with reduced ejection fraction (HFrEF) is characterized not only by reduced left ventricular ejection fraction (EF) but is also combined with symptoms such as dyspnea, fatigue, and edema. Several pharmacological interventions have been established. However, a treatment targeting a novel pathophysiological mechanism is still needed.

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This study aimed to investigate the association between daily sedentary time and the risk of breast cancer (BC) in a large Japanese population. The participants were 36,023 women aged 35-69 years from the Japan Multi-Institutional Collaborative Cohort Study. Cox proportional hazards analysis was used to estimate adjusted hazard ratios (HRs) and 95% confidence intervals (CIs) for BC incidence in relation to time spent sedentarily (categorical variables: <7 and ≥7 hours/day [h/d]).

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Background: Autoimmune gastritis (AIG) is a prevalent chronic inflammatory disease with oncogenic potential that causes destruction of parietal cells and severe mucosal atrophy. We aimed to explore the distinctive gene expression profiles, activated signaling pathways, and their underlying mechanisms.

Methods: A comprehensive gene expression analysis was conducted using biopsy specimens from AIG, Helicobacter pylori-associated gastritis (HPG), and non-inflammatory normal stomachs.

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Local low-frequency vibration promotes blood flow and wound healing in hard-to-heal diabetic foot ulcers (DFUs). However, vibration treatment is challenging in patients with DFUs due to wound management difficulties and low adherence. Consequently, developing wearable self-care devices becomes imperative for effective wound healing.

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Background: Improving diets requires an awareness of the need to limit foods for which excessive consumption is a health problem. Since there are limited reports on the link between this awareness and mortality risk, we examined the association between awareness of limiting food intake (energy, fat, and sweets) and all-cause mortality in a Japanese cohort study.

Methods: Participants comprised 58,772 residents (27,294 men; 31,478 women) aged 35-69 years who completed baseline surveys of the Japan Multi-Institutional Collaborative Cohort Study from 2004 to 2014.

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Several genetic defects, including a mutation in myosin heavy chain 11 (), are reported to cause familial thoracic aortic aneurysm and dissection (FTAAD). We recently showed that mice lacking K1256 of Myh11 developed aortic dissection when stimulated with angiotensin II, despite the absence of major pathological phenotypic abnormalities prior to stimulation. In this study, we used a comprehensive, data-driven, unbiased, multi-omics approach to find underlying changes in transcription and metabolism that predispose the aorta to dissection in mice harboring the Myh11 K1256del mutation.

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Article Synopsis
  • CAF-derived POSTN is significantly overexpressed in non-small cell lung cancer (NSCLC) compared to normal fibroblasts, contributing to tumor growth and progression.
  • POSTN promotes cell proliferation and enhances the ability of NSCLC cells to undergo epithelial-mesenchymal transition (EMT) through activation of the ERK signaling pathway.
  • Knocking down POSTN in cancer-associated fibroblasts improves the effectiveness of osimertinib treatment in EGFR-mutant NSCLC cells, suggesting that targeting POSTN could be a promising therapeutic approach.
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With the rapid expansion of genomic medicine, more citizens are compelled to think about genetics in their daily lives. This study aims to explore appropriate types of educational media and methods to enlighten activities for genetics and hereditary cancer. We presented an 18-min YouTube video on genetics and hereditary cancer to participants at a scientific event, Science Agora 2020, and administered a web questionnaire to investigate their opinions about when and how citizens should start learning about genetics and hereditary cancer.

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Aims/introduction: Local low-frequency vibration (LLFV) promotes vasodilation and blood flow, enhancing wound healing in diabetic foot ulcers with angiopathy. However, vibration-induced vasodilation does not occur, owing to chronic hyperglycemia and inflammation. We hypothesized that LLFV improves glycometabolism and inflammation, leading to vasodilation and angiogenesis in diabetic wounds.

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