Publications by authors named "Tani H"

Long noncoding RNAs (lncRNAs) are transcripts exceeding 200 nucleotides that do not encode proteins. Despite lacking protein-coding capabilities, lncRNAs play crucial roles in cellular processes, including gene-expression modulation and structural maintenance. The study of lncRNAs has evolved significantly since 2009, with advancements in analytical methodologies providing new insights into their functions and dynamics.

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Long non-coding RNA Rhabdomyosarcoma 2-associated Transcript (RMST) is a crucial regulator in various biological processes, particularly in neurogenesis and cancer progression. This review summarizes current knowledge on structure, expression patterns, and functional roles across different organs and diseases of RMST. RMST exhibits tissue-specific expression, notably in brain tissues and vascular endothelial cells, and plays a significant role in neuronal differentiation through interaction with SRY-box 2 (SOX2).

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Aim: Although numerous studies have reported that chronic alcohol consumption causes brain volume reduction and cerebrospinal fluid volume increase, few studies have examined the acute effects of alcohol on brain structure. This study aims to investigate the short-term brain volume changes following alcohol administration.

Methods: Moderate doses of alcohol were administered intravenously to 18 healthy volunteers for a total of 90 min to achieve a blood alcohol concentration of 0.

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Background: Intrauterine peripheral blood mononuclear cell (PBMC) therapy for recurrent implantation failure (RIF) has been reported to improve embryo implantation by acting on the endometrium. However, the exact mode of action of PBMC on the endometrium of patients with RIF remains unclear. In addition, the differences in the therapeutic effects of PBMC therapy with and without human chorionic gonadotropin (hCG) are unknown.

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Article Synopsis
  • RNA therapeutics have evolved significantly since the late 1970s, providing new treatment options for challenging diseases through modalities like ASOs, siRNAs, miRNAs, and mRNAs.
  • * The discovery of synthetic oligonucleotides and RNA interference laid the groundwork, while mRNA vaccines during the COVID-19 pandemic propelled interest in RNA-based therapies.
  • * Despite challenges such as stability and delivery, advancements in technology and AI are enhancing the field, with successes seen in treatments for specific genetic disorders and the potential for personalized medicine in the future.*
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  • - The study investigates the metabolic profiles of human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) after their transplantation, showing that these grafts mature from relying on glycolysis to utilizing fatty acid oxidation over time.
  • - Researchers also explored teratomas, which can arise from non-cardiomyocyte cells within transplanted hiPSCs, finding elevated amino acid transporters and accumulation of specific amino acids like methionine in these tumors.
  • - The presence of subcutaneous teratomas from undifferentiated hiPSCs can be detected through positron emission tomography using a specific tracer, highlighting its relevance in assessing the safety of cardiac regenerative therapies.
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Local and global functional connectivity densities (lFCD and gFCD, respectively), derived from functional magnetic resonance imaging (fMRI) data, represent the degree of functional centrality within local and global brain networks. While these methods are well-established for mapping brain connectivity, the molecular and synaptic foundations of these connectivity patterns remain unclear. Glutamate, the principal excitatory neurotransmitter in the brain, plays a key role in these processes.

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There are high expectations regarding heart regeneration for refractory heart failure (HF). Transplantation of human pluripotent stem cell (hPSC)-derived cardiomyocytes (CMs) is expected to replace CMs lost due to HF, and various studies have been conducted to apply this therapy clinically. Though issues such as arrhythmias and immune rejection remain, the mass production of purified hPSC-derived CMs, their efficient transplantation, and methods to improve their engraftment pushed up the transplantation of hPSC-derived CMs to the clinical stage.

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Background: Sore throat is a prevalent symptom of coronavirus disease 2019 (COVID-19), particularly when caused by the Omicron variants. However, the association between sore throat and immune responses to different severe acute respiratory syndrome coronavirus 2 variants remains unclear. This study aimed to elucidate the characteristics of immune responses associated with sore throat in patients with COVID-19 before and after the emergence of Omicron.

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Canine histiocytic sarcoma (CHS) is characterized by aggressive biological behavior. In our previous study, ERK and Akt pathways were found to be activated in CHS tissues. Thus, the objective of this study was set to investigate the relationships between the activation status of these pathways and the proliferation of CHS cell lines by examining the effects of single and co-administrations of drugs targeting these pathways.

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  • Researchers developed a new PET tracer, [C]K-2, that allows for the visualization and measurement of AMPAR density in the brains of living human patients, which is important for understanding neurotransmission in psychiatric disorders.
  • The study involved 149 patients with various psychiatric disorders (like schizophrenia and bipolar disorder) and 70 healthy individuals, revealing correlations between AMPAR density and symptom severity.
  • The findings highlight unique patterns of AMPAR distribution across different psychiatric disorders, suggesting potential new approaches for diagnosing and treating these conditions based on biological mechanisms.
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  • Ninety-five participants, including residents (average age 88) and staff (average age 51), demonstrated strong antibody responses after multiple doses of mRNA vaccines.
  • The findings support continued mRNA booster vaccinations for older adults in high-risk settings, as they generate robust immunity with minimal adverse effects.
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  • * A study examined 131 female patients with X-linked dominant incontinentia pigmenti (IP), finding that 36% produced autoantibodies against IFN-α and/or IFN-ω, significantly higher than age-matched controls.
  • * The presence of these autoantibodies is linked to an abnormally small thymus and predisposes patients to life-threatening viral infections, while those without these autoantibodies do not face the same risk.
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Nanofibrillated bacterial cellulose (NFBC) is a bio-compatible long-fiber nanocellulose produced by cellulose-synthesizing bacteria. It forms an entangled network structure in the suspension state, thereby imparting greater viscosity than conventional media additives. In this study, we examined its application as a shear protectant in the suspension culture of mammalian cells to mitigate hydrodynamic stress imposed on the cells.

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We have previously reported a clinical case in which a hospitalized patient with a history of hematopoietic stem cell transplantation for acute myeloid leukemia was persistently infected with SARS-CoV-2. This study investigated the neutralizing activity of patient sera against cultured viruses isolated at each time point. We also continued to decipher and analyze the whole-genome sequence of the virus.

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Aim: Although the antidepressant effect of ketamine on treatment-resistant depression (TRD) has been frequently reported in North American and European countries, evidence is scarce among the Asian population. We aimed to evaluate the efficacy and safety of intravenous ketamine in Japanese patients with TRD.

Methods: In this double-blind randomized placebo-controlled trial, 34 Japanese patients with TRD were randomized to receive either intravenous ketamine (0.

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This study investigates novel short-lived long noncoding RNAs (lncRNAs) in mice with altered expression in metabolic dysfunction-associated steatotic liver (MASH) and liver fibrosis. LncRNAs share similarities with mRNAs in their transcription by RNA polymerase II, possession of a 5' cap structure, and presence of a polyA tail. We identified two lncRNAs, Kcnq1ot1 and Rmst, significantly decreased in both conditions.

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Brain functions are mediated via the complex interplay between several complex factors, and hence, identifying the underlying cause of an abnormality within a certain brain region can be challenging. In mitochondrial disease, abnormalities in brain function are thought to be attributed to accumulation of mitochondrial DNA (mtDNA) with pathogenic mutations; however, only few previous studies have directly demonstrated that accumulation of mutant mtDNA induced abnormalities in brain function. Herein, we examined the effects of mtDNA mutations on brain function via behavioral analyses using a mouse model with an A2748G point mutation in mtDNA tRNA.

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A 12-year-old male domestic cat with multiple subcutaneous mast cell tumours (MCTs) presented with a 2-week history of pruritus and raw/bleeding skin from self-trauma at Kagoshima University Veterinary Teaching Hospital. Polymerase chain reaction (PCR) and histopathological analyses revealed intertumoral heterogeneity among tumour locations based on the mutation status of KIT. In addition, the expression pattern of KIT was characterized.

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Objective: This study aimed to examine the feasibility and effectiveness of online group psychotherapy focused on self-compassion for individuals experiencing bereavement-related grief.

Method: This single-arm feasibility trial involved participants aged 18 years or older who had experienced bereavement at least 6 months prior the five-week intervention. Outcomes were measured at baseline, immediately post-intervention, and 4 and 12 weeks later.

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  • - The study aimed to assess the effectiveness of duodenum-preserving pancreatic head resection (DPPHR) as a treatment for pancreatic neuroendocrine tumors (PNETs) in relation to curability and patient quality of life post-surgery.
  • - Seven patients underwent DPPHR between January 2011 and December 2021, with the procedure showing manageable postoperative complications and achieving complete curative resections without positive tumor margins.
  • - The findings suggest that DPPHR is a viable alternative to more invasive surgeries like pancreaticoduodenectomy for treating PNETs, allowing for thorough pathological assessment while minimizing patient recovery concerns.
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Prenylated cinnamic acid derivatives are the bioactive components of Brazilian green propolis (BGP). The effect of other botanical components on the pharmacokinetic profiles of these derivatives remains relatively unexplored. In the present study, we investigated the influence of several herbal extracts (turmeric, ginkgo leaf, coffee fruit, soybean, and gotu kola) on the plasma concentrations of cinnamic acid derivatives after BGP consumption.

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Introduction: The therapeutic potential of psychedelics for various mental disorders has gained significant interest. Previous studies have highlighted that psychedelics induce psychoactive effects, including challenging aspects of experiences. These experiences are assessed using the Challenging Experience Questionnaire (CEQ), yet its Japanese version has been unavailable.

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Long non-coding RNAs (lncRNAs) are sequences longer than 200 nucleotides, but they do not encode proteins. Nevertheless, they have significant roles in diverse biological functions. It remains unclear how viral infections trigger the expression of lncRNAs.

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