Publications by authors named "Yasuko Fujisawa"

Article Synopsis
  • * The presence of anti-GAD antibodies is linked to type 1 diabetes and various neurological disorders collectively referred to as GAD antibody-spectrum disorders (GAD-SD).
  • * A case study of a 17-year-old male who developed GAD-SD and type 1 diabetes after a stem cell transplant is presented, showing symptoms like memory issues and abnormal brain scans, leading to treatment with steroids and insulin.
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Introduction: The use of the PreserFlo microshunt is gaining popularity owing to its ease of implantation and reduced need for postoperative intervention compared to conventional trabeculectomy.

Patient Concerns: However, microshunt exposure remains a severe complication of PreserFlo surgery, particularly in patients with a thin Tenon capsule and conjunctiva. However, the actual thickness and intensity of the Tenon capsule or conjunctiva can be confirmed only during surgery.

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17α-hydroxylase deficiency is a type of congenital adrenocortical hyperplasia that is typically diagnosed in childhood or adolescence. It manifests as hypertension with gonadal dysfunction as the primary symptom. We herein report 17α-hydroxylase/17,20-lyase deficiency (17OHD) diagnosed at the age of 45 years.

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We encountered a Chinese girl with pseudohypoparathyroidism type 1A (PHP1A) and her mother with pseudopseudohypoparathyroidism (PPHP). Sequencing analysis of -Gsα revealed a heterozygous c.212+2T>C variant (NM_000516.

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Article Synopsis
  • The study evaluated changes in eye measurements after two surgical treatments: PreserFlo MicroShunt implantation and trabeculectomy, involving 27 and 29 cases, respectively.
  • Significant reductions in intraocular pressure were observed in both groups at all postoperative assessments.
  • While visual acuity temporarily decreased post-surgery, corneal curvature remained stable, with the PreserFlo group showing increased corneal thickness initially, and both groups experienced a decrease in anterior chamber depth and axial length over time.
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Objective: Somapacitan is a long-acting growth hormone (GH) derivative developed for the treatment of GH deficiency (GHD). This study evaluates the efficacy and tolerability of somapacitan in Japanese children with GHD after 104 weeks of treatment and after switch from daily GH.

Design: Subanalysis on Japanese patients from a randomised, open-labelled, controlled parallel-group phase 3 trial (REAL4, NCT03811535).

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Background: Long tubular duplication is a rare congenital intestinal disease, that can lead to emergency situations marked by massive hemorrhage. However, preoperative diagnosis and surgical treatment are challenging. This report presents preoperative images and details a surgical procedure for long tubular intestinal duplications with massive hemorrhage.

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Background: Hypoglycemia is a significant problem for all neonates and requires minimally invasive and reliable monitoring. The primary objective of this study was to verify the safety and accuracy of the continuous glucose monitoring (CGM) of full-term neonates using Freestyle Libre, a flash glucose monitoring (FGM) device.

Methods: The study was conducted on 20 neonates.

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The germline TP53 p.R337H mutation is reported as the most common germline TP53 variant. It exists at a remarkably high frequency in the population of southeast Brazil as founder mutation in two distinct haplotypes with the most frequent co-segregating with the p.

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Although 17β-hydroxysteroid dehydrogenase type 3 (HSD17B3) deficiency is diagnosed when a testosterone/androstenedione (T/A-dione) ratio after human chorionic gonadotropin (hCG) stimulation is below 0.8, this cut-off value is primarily based on hormonal data measured by conventional immunoassay (IA) in patients with feminized or ambiguous genitalia. We examined two 46,XY Japanese patients with undermasculinized genitalia including hypospadias (patient 1 and patient 2).

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Context: We have previously reported that a specific "AGATC" haplotype in a >34 kb tight linkage disequilibrium (LD) block within ESR1 is strongly associated with cryptorchidism and hypospadias in Japanese boys.

Objective: We aimed to determine the true susceptibility factor for cryptorchidism and hypospadias linked to the "AGATC" haplotype.

Methods: We performed various molecular studies in hitherto unreported 230 Italian boys (80 with cryptorchidism and 150 with normal genitalia) and previously reported and newly recruited 415 Japanese boys (149 with cryptorchidism, 141 with hypospadias, and 125 with normal genitalia).

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Purpose: To evaluate the accuracy and time-efficiency of newly developed software in automatically creating curved planar reconstruction (CPR) images along the main pancreatic duct (MPD), which was developed based on a 3-dimensional convolutional neural network, and compare them with those of conventional manually generated CPR ones.

Materials And Methods: A total of 100 consecutive patients with MPD dilatation (≥ 3 mm) who underwent contrast-enhanced computed tomography between February 2021 and July 2021 were included in the study. Two radiologists independently performed blinded qualitative analysis of automated and manually created CPR images.

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Purpose: Detection of early-stage liver fibrosis has direct clinical implications on patient management and treatment. The aim of this paper is to develop a non-invasive, cost-effective method for classifying liver disease between "non-fibrosis" (F0) and "fibrosis" (F1-F4), and to evaluate the classification performance quantitatively.

Methods: Image data from 75 patients who underwent a simultaneous liver biopsy and non-contrast CT examination were used for this study.

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Recent studies have indicated that heterozygous loss-of-function variants in fibroblast growth factor receptor 1 () are involved in the development of congenital hypogonadotropic hypogonadism and combined pituitary hormone deficiency (CPHD). We encountered a Japanese boy with short stature and pubertal failure. Endocrine studies showed GH, TSH, and LH/FSH deficiencies, and brain magnetic resonance imaging delineated hypoplastic anterior pituitary and ectopic posterior pituitary.

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Objective: Ultra-high-resolution CT (UHR-CT), which can be applied normal resolution (NR), high-resolution (HR), and super-high-resolution (SHR) modes, has become available as in conjunction with multi-detector CT (MDCT). Moreover, deep learning reconstruction (DLR) method, as well as filtered back projection (FBP), hybrid-type iterative reconstruction (IR), and model-based IR methods, has been clinically used. The purpose of this study was to directly compare lung CT number and airway dimension evaluation capabilities of UHR-CT using different scan modes with those of MDCT with different reconstruction methods as investigated in a lung density and airway phantom design recommended by QIBA.

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Article Synopsis
  • The study aimed to evaluate the effectiveness of a machine learning (ML) algorithm in predicting the disease severity of COVID-19 patients using chest CT scans compared to traditional CT scoring methods.
  • From March to May 2020, 32 COVID-19 patients were assessed, and those starting favipiravir treatment earlier showed significant differences in CT findings and outcomes related to recovery.
  • Results indicated that the ML-based analysis had a higher accuracy (87.5%) for predicting disease severity and treatment timing than conventional CT severity scoring (62.5%).
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Although ACAN heterozygous loss-of-function variants often cause idiopathic short stature (ISS) phenotype, there is no report describing ISS phenotype caused by ACAN biallelic loss-of-function variants. We encountered a 4 1/12-year-old Japanese girl with a height of 80.4 cm (-5.

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Background: Although intrauterine hyponutrition is regarded as a risk factor for the development of "testicular dysgenesis syndrome" (TDS) in the human, underlying mechanism(s) remain largely unknown.

Methods: To clarify the underlying mechanism(s), we fed vaginal plug-positive C57BL/6N female mice with regular food ad libitum throughout the pregnant course (control females) (C-females) or with 50% of the mean daily intake of the C-females from 6.5 dpc (calorie-restricted females) (R-females), and compared male reproductive findings between 17.

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Background: The need for quantitative assessment of interstitial lung involvement on thin-section computed tomography (CT) has arisen in interstitial lung diseases including connective tissue disease (CTD).

Purpose: To evaluate the capability of machine learning (ML)-based CT texture analysis for disease severity and treatment response assessments in comparison with qualitatively assessed thin-section CT for patients with CTD.

Material And Methods: A total of 149 patients with CTD-related ILD (CTD-ILD) underwent initial and follow-up CT scans (total 364 paired serial CT examinations), pulmonary function tests, and serum KL-6 level tests.

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Article Synopsis
  • MCT8 is a protein that helps transport thyroid hormones, and its deficiency leads to serious developmental issues, particularly affecting myelination in the brain.
  • This study evaluated myelination patterns in four patients with MCT8 deficiency and reviewed MRI data from additional Japanese patients, revealing that myelination starts in specific brain areas during infancy and continues to develop with age.
  • While the overall pattern of myelination in these patients resembles typical development, a notable lag in myelination of the deep anterior white matter was observed, highlighting the need for more research in this area.
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Purpose: We evaluated the diagnostic performance of the texture features of dynamic contrast-enhanced (DCE) MRI for breast cancer diagnosis in which the discriminator was optimized, so that the specificity was maximized via the restriction of the negative predictive value (NPV) to greater than 98%.

Methods: Histologically proven benign and malignant mass lesions of DCE MRI were enrolled retrospectively. Training and testing sets consist of 166 masses (49 benign, 117 malignant) and 50 masses (15 benign, 35 malignant), respectively.

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Monocarboxylate transporter 8 (MCT8) deficiency is an X-chromosome-linked neurodevelopmental disorder resulting from impaired thyroid hormone transport across the cell membrane. The diagnosis of MCT8 deficiency is typically delayed owing to the late appearance of signs and symptoms as well as the inability of standard biomarkers of neonatal screening to provide early detection. In this study, we report, for the first time, the ability to detect MCT8 deficiency at birth using dried blood spot (DBS) samples.

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Synopsis of recent research by authors named "Yasuko Fujisawa"

  • - Yasuko Fujisawa's recent research focuses on various clinical and surgical interventions, particularly in the fields of endocrinology and ophthalmology, revealing important insights into conditions such as congenital adrenocortical hyperplasia and glaucoma treatments.
  • - Noteworthy findings include the effectiveness of the PreserFlo microshunt in glaucoma surgery and the novel use of surgical techniques, as well as the diagnosis of rare hormonal deficiencies in older patients, showcasing a diverse patient demographic in her studies.
  • - Fujisawa's work further emphasizes safety and accuracy in medical technologies, such as continuous glucose monitoring for neonates, and the implications of genetic mutations in cancer susceptibility and hormone-related disorders, contributing to a deeper understanding of these complex health issues.