Publications by authors named "TAKAHASHI Y"

Change in mucosal microbiome is associated with various types of cancer in digestive tract. We hypothesized that microbial communities in the esophageal endoscopic wash fluids reflects resident flora in esophageal mucosa that is associated with esophageal carcinoma (EC) risk and/or directly correlates microbiome derived from EC tumor tissue. Studying microbial communities in esophageal endoscopic wash samples would be therefore useful to predict the incidence or risk of EC.

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Immunological imprinting by ancestral SARS-CoV-2 strains is thought to impede the robust induction of Omicron-specific humoral responses by Omicron-based booster vaccines. Here, we analyzed the specificity and neutralization activity of memory B (B) cells after repeated BA.5 exposure in individuals previously imprinted by ancestral strain-based mRNA vaccines.

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Recent research in urothelial carcinoma (UC) has focused on coding mutations, leaving the significance of non-coding mutations unexplored. This study aims to evaluate non-coding DNA mutation frequencies compared to coding regions in normal urothelium and flat lesions, exploring their implications for tumor biology. Using targeted next-generation sequencing with UC-related gene panel, we analyzed non-coding and coding DNA mutation frequencies across 119 samples of flat urothelium encompassing various lesion types.

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  • Shiga toxin-producing E. coli (STEC) causes severe gastrointestinal issues, particularly linked to Stx2, which poses greater risks than Stx1.
  • A study of 71 strains in the O145:H28 lineage reveals the dynamic nature of Stx phages, including their acquisition, transfer, and variations affecting Stx2 production levels.
  • Short-tailed Stx2 phages are associated with higher production levels of Stx2 than long-tailed variants, highlighting genetic differences that influence these levels.
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  • The study investigated how silicosis, a lung disease, progresses in fluorspar miners after they stop being exposed to dust, including factors that might influence this progression.
  • A total of 67 former miners were studied over 19 years, analyzing their radiological images to track changes in lung health and using statistical models to identify significant risk factors.
  • Results showed that 75% of participants experienced disease progression, with older age and higher initial lung opacity linked to more severe disease worsening over time.
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Acquired hemophilia A (AHA) is an acquired bleeding disorder caused by neutralizing antibodies (inhibitors) against Coagulation Factor VIII (FVIII:C), causing sudden hemorrhagic symptoms (i.e., subcutaneous bleeding, intramuscular bleeding, and hematuria).

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Purpose: The study aimed to explore and describe the lives of patients with persistent cloaca (PC) from childhood to adulthood.

Methods: Semistructured interviews were conducted with nine adult patients with PC. Their experiences and thoughts regarding this disease were analyzed qualitatively and inductively.

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Background: The optimal balance between the graft volume (GV) and portal venous flow (PVF) in living donor liver transplantation (LDLT) is unclear. As lactate is mainly metabolized in the liver, perioperative lactate levels are reportedly a useful biomarker for early graft dysfunction (EGD). The present study analyzed perioperative lactate levels according to the PVF.

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  • - The text examines whether BCS-based biowaivers can be applied to immediate-release drugs containing raltegravir potassium, a treatment for HIV.
  • - Raltegravir potassium is classified as BCS class II or IV, meaning it has low solubility and uncertain permeability, which affects its potential for biowaivers.
  • - According to ICH M9 guidelines, it's not advisable to use BCS-based biowaivers for new generic versions or significant changes to the drug's formulation or manufacturing.
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Background: Benzodiazepines are used in pediatric patients with congenital heart disease (CHD) because of their mild hemodynamic depressant effects. A novel short-acting benzodiazepine, remimazolam, is expected to be suitable for these patients. We examined the characteristics of remimazolam anesthesia in pediatric patients with CHD undergoing cardiac catheterization.

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Renal function significantly influences the appropriate warfarin dosage. However, studies investigating the impact of genetic factors on warfarin dosage, considering renal function, are limited. This study aimed to assess the role of genetic polymorphisms in , , , , , and in warfarin dosage adjustment considering renal function.

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Background/purpose: Living donor liver transplantation (LDLT) is vital for pediatric end-stage liver disease due to organ shortages. The graft-to-recipient weight ratio (GRWR) preoperatively measured predicts the outcomes of LDLT. We typically target between 0.

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  • A nationwide study in Japan investigated the cancer risk associated with different lengths of Barrett's esophagus (BE) among 33,478 subjects who underwent endoscopy between 2013 and 2017, with follow-ups until 2022.
  • The findings showed that the incidence of esophageal adenocarcinoma increased with the length of BE, with higher risks for those with BE lengths of 1-3 cm and ≥3 cm.
  • The study highlights the importance of considering the length of BE in managing patients, as longer BE is correlated with a greater cancer risk.
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In June 2024, the Japanese government introduced a new genomic strategic action to shorten the "diagnostic odyssey" for patients with rare and intractable diseases: Six groups of rare diseases, (i) Muscle weakness group, (ii) Growth retardation, intellectual disability, and characteristic facial features group, (iii) Intellectual disability/epilepsy group, (iv) Cardiomyopathy group (mainly adult onset) (v) Proteinuria group, (vi) Fever, inflammation, skin rash, osteoarthritis group, have been newly recognized as "difficult-to-differentiate disorders" and comprehensive genomic testing can be reimbursed when patients belong to one of the six groups and certain requirements are met. The introduction of comprehensive genomic testing will improve the diagnosis rate of diseases and have significant potential to enhance Japan's rare and intractable disease policy. The new strategy in Japan and its rationale will be a reference for insurance reimbursement of comprehensive genomic testing in other countries that have universal health coverage supported by the public health insurance system.

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  • This study assessed the outcomes of biliary tract cancer (BTC) patients with liver metastases who received chemotherapy, revealing unclear survival characteristics based on liver involvement.
  • The research included 96 patients, showing those with only liver metastases had better overall survival (11.8 months) compared to those with multiple organ involvement (7.4 months).
  • Key findings indicated that patients with fewer liver metastases (oligometastases) had a longer survival rate, especially benefiting from subsequent surgery, suggesting a potential treatment path for better outcomes in selected cases.
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Introduction: Primary small bowel carcinoma in pregnant women is extremely rare. Small bowel cancer is difficult to diagnose because of its rarity, lack of specific clinical symptoms, and particular anatomical features. We experienced a case of primary small bowel adenocarcinoma with ovarian metastasis during pregnancy.

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  • Clinical studies indicate that the bacteria Aggregatibacter actinomycetemcomitans (A. actinomycetemcomitans) is linked to aggressive periodontitis and may worsen rheumatoid arthritis (RA), although the underlying mechanisms remain unclear.
  • Research using a mice model showed that systemic infection with A. actinomycetemcomitans leads to arthritis progression through IL-1β secretion and immune cell infiltration, which is tied to the activation of caspase-11 in macrophages.
  • The study suggests that blocking this inflammasome activation can reduce arthritis symptoms, providing insight into the relationship between periodontitis infections and RA worsening.
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Background: There have been few descriptions in the literature on long-term enzyme replacement therapy (ERT) in patients with advanced late-onset Pompe disease (LOPD).

Objectives: This study aimed to assess the efficacy and limitations of ERT in advanced LOPD patients.

Methods: We retrospectively reviewed the clinical courses of patients with advanced LOPD (two juvenile-onset and five adult-onset patients) who were treated with recombinant human alglucosidase alfa to examine improvements achieved with and limitations of ERT until their death or when switching to avalglucosidase alfa occurred.

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The presence of Fusobacterium nucleatum is associated with an immunosuppressive tumor immune microenvironment (TIM) in primary colorectal cancer (CRC), contributing to tumor progression. Its persistence in CRC liver metastasis tissues raises questions about its role in modulating local and systemic immune responses and influencing recurrence patterns. This retrospective cohort study of 218 patients with CRC liver metastasis investigated the association of F.

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Aim: To describe the timing and characteristics of midwives' hands-on interruptions of newborns' behavior while in skin-to-skin contact during the first hour after birth and to elucidate the relationship between these hands-on interruptions and the incidence of nipple pain during the first 4 days postpartum.

Methods: An observational pilot study was conducted at a Baby-Friendly® hospital in Japan from 2016 to 2018. Iterative analysis of video recordings from a larger study of the behavior of newborns while skin-to-skin with their mothers in the first hour after birth found 16 full-term newborns who were born vaginally and that met the inclusion criteria of a midwife's hands-on intervention (HOI) interrupting the infant's progress toward breast self-attachment.

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  • The study investigated the postoperative outcomes for patients with spinal metastases from prostate cancer, focusing on improvements in their quality of life and other patient-oriented assessments.
  • Conducted across 35 centers, the research assessed 413 patients, with 41 specifically having prostate cancer, and followed them for at least a year following surgery using various evaluation methods.
  • Results showed significant improvements in neurological function, quality of life, and patient motivation post-surgery, indicating that surgical intervention is beneficial for these patients.
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Background: Cognitive abnormalities associated with electroconvulsive therapy (ECT) are limited to the first few days after treatment. Mismatch negativity (MMN) is an event-related potential that reflects an automatic auditory change detection process under nonattention conditions and cognitive function in psychotic disorders and may be trait- or state-dependent. This study aimed to report the changes in MMN and cognitive function after two ECT treatments in a female patient who underwent maintenance ECT for atypical psychosis.

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The orbitofrontal cortex (OFC) is crucial for tracking various aspects of expected outcomes, thereby helping to guide choices and support learning. Our previous study showed that the effects of reward timing and size on the activity of single units in OFC were dissociable when these attributes were manipulated independently ( Roesch et al., 2006).

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Aim: To investigate the relationship between the developmental quotient (DQ) at age 3 years and the need for educational support at school age in extremely preterm infants.

Methods: A total of 176 infants with a gestational age of <28 weeks were analyzed. The total DQ and subscales were evaluated using the Kyoto Scale of Psychological Development (KSPD) test.

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Purpose: We aimed to identify factors predicting the need for future liver transplantation (LT) at 18 years of age in patients with biliary atresia (BA).

Methods: BA patients with native liver survival at > 18 years of age were retrospectively reviewed. The clinical characteristics, outcomes, hepatobiliary function, and liver fibrosis markers of native liver survivors (NLS group) were compared with patients who subsequently underwent LT (LT group).

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