Publications by authors named "Risa Nomura"

Article Synopsis
  • Differential diagnosis between isolated IgG4-related sclerosing cholangitis (IgG4-SC) and perihilar cholangiocarcinoma (PHCC) is difficult, and this study aimed to clarify how endoscopic retrograde cholangiography (ERCP) procedures can help.
  • The research included 7 patients with IgG4-SC and 65 with PHCC, assessing the effectiveness of intraductal ultrasonography (IDUS), peroral cholangioscopy (POCS), and pathological exams for diagnosis.
  • Results indicated that specific features found through IDUS and POCS could help distinguish IgG4-SC from PHCC, highlighting the need for a multi-procedure approach for
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Symptomatic hyponatremia due to bowel preparation is extremely rare, but it can cause severe neurological symptoms and require hospitalization. We report our experience with two cases of symptomatic hyponatremia after bowel preparation. Our findings suggest that the cause of hyponatremia may be not only oral bowel cleansing agents but also high fluid intake.

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Background And Aim: Early colonoscopy has not shown any advantages over elective colonoscopy in reducing the risk of early rebleeding (≤ 30 days) after acute lower gastrointestinal bleeding (ALGIB). Considering the heterogeneity among patients with ALGIB, we sought to evaluate appropriate candidates for early colonoscopy.

Methods: A total of 592 patients with ALGIB were enrolled, and the clinical outcomes of early colonoscopy were investigated.

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We investigated the relation between corneal regular and irregular astigmatism in normal human eyes. In 951 eyes of 951 patients, corneal irregular astigmatism, such as asymmetry and higher-order irregularity components, was calculated using the Fourier harmonic analysis of corneal topography data within the central 3-mm zone of the anterior corneal surface. The eyes were classified by the type of corneal regular astigmatism into four groups; minimum (< 0.

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Article Synopsis
  • Hematopoietic stem cell transplantation (HSCT) is important not only for treating cancers but also for curing non-malignant diseases like immunodeficiencies and blood disorders.
  • The study analyzed 75 pediatric patients who underwent HSCT for non-malignant diseases between 1983 and 2014, focusing on long-term health outcomes and side effects of treatment.
  • Results showed that glucocorticoid treatment and the type of conditioning regimen were linked to growth issues, and all four female patients experienced hypogonadism, highlighting the need for careful post-transplant monitoring for both types of diseases.
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The nuclear receptor NR5A1 is equally expressed and required for development of the gonadal primordia of both sexes, but, after sex determination, it is upregulated in XY testes and downregulated in XX ovaries. We have recently demonstrated, in mice, that this downregulation is mediated by forkhead box L2 (FOXL2) and hypothesized that adequate suppression of is essential for normal ovarian development. Further, analysis of human patients with disorders/differences of sex development suggests that overexpression of can result in XX (ovo)testicular development.

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Peptidyl arginine deiminases (PADIs) are enzymes that change the charge of proteins through citrullination. We recently found Padi2 was expressed exclusively in fetal Sertoli cells. In this study, we analyzed the transcriptional regulation of Padi2 and the role of PADI2 in testicular development.

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Background: Defects of the insulin receptor gene ( INSR ) cause wide spectra of congenital insulin resistance. Monoallelic defects result in milder insulin-resistant diabetes mellitus with acanthosis nigricans (IRAN, type A). Whereas, leprechaunism (Donahue syndrome), the most severe condition with lethality during the infantile period is caused by biallelic defects of INSR .

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No serological cut-off exists to separate low T3 syndrome (LT) and central hypothyroidism (CH). The objective of this retrospective study was to propose such a cut-off. The first participant group comprised 52 patients from the age of six to twenty years.

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21-hydroxylase deficiency (21-OHD) is the most common type of congenital adrenal hyperplasia. In addition to the clinical problems caused by adrenal insufficiency and androgen excess, a risk for obesity and metabolic syndrome during young adulthood is a major ramification of the disease. Although glucocorticoid therapy is very likely to be one of the contributory factors, the precise causes of the metabolic status of adult 21-OHD patients remain to be clarified.

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In 45,X/46,XY DSDs, the proportion of the two cell lineages is uneven in different organs and tissues, and 45,X and 46,XY cells can be found throughout the body. The gonadal development of 45,X/46,XY patients depends on the population of 46,XY cells in the gonads and the clinical features are variable. We had a 45,X/46,XY DSD patient whose 46,XY population in peripheral blood was extremely low, less than 0.

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The mouse hepatitis virus (MHV) has a high mutation rate, leading to various neuropathologies after infection. The srr7 mutant was isolated from the MHV strain cl-2, which induces characteristic spongiform degeneration in the brain. To investigate outcomes of srr7 infection, we re-cloned srr7(H2) from the viral stock srr7(Mix).

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Soluble receptor-resistant mutant 7 (ssr7) is isolated from a highly neurovirulent mouse hepatitis virus (MHV) JHMV cl-2 strain (cl-2). srr7 exhibits lower virulence than its maternal strain in infected mice, which is typically manifested in a longer lifespan. In this study, during the course of infection with srr7, small spongiotic lesions became apparent at 2 days post-inoculation (pi), they spread out to form spongiform encephalopathy by 8 to 10 days pi.

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Viral spread during the early stages after infection was compared between a highly neurovirulent mouse hepatitis virus (MHV), JHMV cl-2 strain (cl-2), and its low-virulent mutant, soluble-receptor-resistant (srr)7. The infection of cells with srr7 (soluble-receptor-resistant mutant 7) is dependent on a known MHV receptor (MHVR), carcinoembryonic cell adhesion molecule 1a, whereas cl-2 shows MHVR-independent infection. Initial viral antigens were detected between 12 and 24 h post-inoculation (p.

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