Publications by authors named "Atsushi Satomura"

Aims: Latent autoimmune diabetes in adults (LADA) is characterized by positive islet-associated autoantibodies including glutamic acid decarboxylase antibody (GADA), and gradual decline in insulin secretion, progressing to insulin dependency. This cross-sectional study aimed to determine whether GADA by enzyme-linked immunosorbent assay (GADA-ELISA) titer of ≥180 U/mL could be associated with decline in β-cell function in participants with LADA.

Methods: Sixty-three participants with LADA were recruited and an association between insulin secretion capacity and disease duration was investigated.

View Article and Find Full Text PDF

Background: Satralizumab, a humanized anti-interleukin-6 receptor monoclonal antibody, has been approved globally for the treatment of neuromyelitis optica spectrum disorder (NMOSD), based on positive results from two randomized, double-blind, phase 3 studies: SAkuraSky (NCT02028884) and SAkuraStar (NCT02073279). There remains an unmet need to understand the real-world management of NMOSD, especially in patients undergoing tapering of concomitant therapy. We examined real-world treatment patterns, including concomitant glucocorticoids and immunosuppressants, and relapse in satralizumab-treated patients with NMOSD, using a Japanese administrative hospital claims database.

View Article and Find Full Text PDF

Background: Cases of subacute thyroiditis (SAT) after severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccination have been reported. A human leukocyte antigen (HLA) allele, HLA-B*35, appears to be involved in the pathogenesis of SAT.

Case Presentation: We conducted HLA typing of one patient with SAT and another with both SAT and Graves' disease (GD), which developed after SARS-CoV-2 vaccination.

View Article and Find Full Text PDF

Unlabelled: Unprovoked A-β+ ketosis-prone type 2 diabetes (KPD) is characterized by the sudden onset of diabetic ketosis/ketoacidosis (DK/DKA) without precipitating factors, negative anti-islet autoantibodies ("A- "), and preservation of β-cell function ("β+ ") after recovery from DKA using insulin therapy. However, there have been few reports on glucose tolerance after recovery. We present a case of KPD with nearly normalized glucose tolerance after recovery from severe DKA.

View Article and Find Full Text PDF

Introduction: Many clinical studies have identified significant predictors or risk factors for the severity or mortality of coronavirus disease 2019 (COVID-19) cases. However, there are very limited reports on the risk factors for requiring oxygen therapy during hospitalization. In particular, we sought to investigate whether plasma glucose and HbA1c levels could be risk factors for oxygen therapy requirement.

View Article and Find Full Text PDF

Context: Unprovoked A-β+ ketosis-prone type 2 diabetes (KPD) is characterized by the sudden onset of diabetic ketosis/ketoacidosis (DK/DKA) without precipitating factors, negative anti-islet autoantibodies ("A-"), and preservation of β-cell function ("β+") after recovery from DKA. Although this phenotype often appears with acute hyperglycemia and DK/DKA just like acute-onset type 1 diabetes (AT1D), the involvement of anti-islet immune responses remains unknown.

Objective: We sought to clarify the immunological role of insulin-associated molecules in unprovoked A-β+ KPD.

View Article and Find Full Text PDF

Unlabelled: We report the case of a 52-year-old hyperglycemic woman with type 2 diabetes and severe coronavirus disease 2019 (COVID-19)-associated pneumonia, possibly involving the subcutaneous insulin resistance (SIR) syndrome. After admission for pneumonia, her average daily blood glucose (BG) levels remained at 300-400 mg/dL, although the required dosage of subcutaneous insulin markedly increased (~ 150 units/day; ~ 2.63 units/kg/day).

View Article and Find Full Text PDF
Article Synopsis
  • A 48-year-old man with parotid gland adenocarcinoma and lung metastasis experienced concurrent onset of Graves' disease and type 1 diabetes after receiving nivolumab treatment for cancer.
  • Fourteen days post the sixth nivolumab course, blood tests revealed high glucose levels (379 mg/dL) and signs of thyrotoxicosis, indicating both autoimmune conditions.
  • The patient had a specific genetic marker (HLA-DRB1*04:05) commonly associated with autoimmune conditions, suggesting a potential link between his genetics and the simultaneous manifestation of type 1 diabetes and Graves' disease following immunotherapy.
View Article and Find Full Text PDF

Type 1 diabetes is largely caused by β-cell destruction through anti-islet autoimmunity. Reportedly, interferon (IFN)-γ-secreting peripheral blood mononuclear cells (PBMCs) specific to four insulin B-chain amino acid 9-23-related peptides (B:9-23rPep) were increased in type 1 diabetes participants. This study aimed to investigate the PBMC frequencies in subtypes of type 1 diabetes using enzyme-linked immunospot assay.

View Article and Find Full Text PDF

Ketosis-prone type 2 diabetes is recognized as atypical diabetes. These patients are often male, characterized by obesity, sudden onset of ketosis and a transient decrease in insulin secretion capacity that can be recovered with temporal insulin therapy. Here, we report a male patient with ketosis-prone type 2 diabetes who was followed up for 8 years.

View Article and Find Full Text PDF
Article Synopsis
  • * Experiments show that TFs Gcn4 and Nup2 directly interact with NPCs, while other factors linked to mRNA export or transcription play a more indirect role.
  • * A special "positioning domain" in Gcn4 is crucial for its interaction with NPCs and can enhance the transcription of certain genes, indicating that a similar mechanism may apply to many yeast TFs.
View Article and Find Full Text PDF

Rheumatoid arthritis (RA) is an autoimmune disease that causes the chronic inflammation of the joints. Intercellular communication containing synovial fibroblasts seems to play a major role in RA pathogenesis. In this study, to better understand intercellular communication related to RA pathogenesis, we identified exosomal microRNAs (miRNAs) derived from synovial fibroblasts.

View Article and Find Full Text PDF
Article Synopsis
  • Cis-regulatory elements (CREs) are crucial for gene expression control, and researchers are developing methods to analyze mutant CRE sequences effectively.
  • The novel method uses biased randomization during PCR to create a diverse library of T7 promoter variants, enabling high-throughput sequencing to assess transcriptional activity.
  • Results indicate specific base positions (-9 to -7) are critical for T7 promoter function and show a strong correlation between transcriptional activity and protein levels produced, validating the effectiveness of the method.
View Article and Find Full Text PDF

Objectives: Corynebacterium spp. are becoming recognized as pathogens that potentially cause various infections. We aimed to evaluate the clinical characteristics associated with Corynebacterium spp.

View Article and Find Full Text PDF

Myeloperoxidase-antineutrophil cytoplasmic antibody-associated vasculitis (MPO-AAV) does not usually involve large vessels, such as the aorta. However, we experienced three cases having an aortic aneurysm as a complication of MPO-AAV with renal insufficiency. In one patient it involved the onset of descending aortic dissection during treatment for MPO-AAV; another two patients had an abdominal aortic aneurysm at the time of our diagnosis of MPO-AAV.

View Article and Find Full Text PDF

Background: Inappropriate antimicrobial therapy often leads to poor outcomes. This study aimed to evaluate the impact of an antimicrobial stewardship program (ASP) team on appropriate therapy, in patients with bacteremic urinary tract infection (UTI).

Patients And Methods: We retrospectively reviewed the interventions by the ASP team in 807 patients with bacteremic UTI.

View Article and Find Full Text PDF

The patient was a 38-year-old Japanese woman who had been diagnosed with hereditary angioedema type I at 7 years of age based on her family history. She had undergone four pregnancies. She gave birth to a healthy baby girl after her first pregnancy and had reported few episodes of angioedema.

View Article and Find Full Text PDF

A correction to this Article has been published and is linked from the HTML version of this paper. The error has been fixed in the paper.

View Article and Find Full Text PDF

Nuclear pore complexes (NPCs) have a conserved, but poorly understood, role in transcriptional regulation. Recently, in Developmental Cell, Raices et al. argued that tissue-specific nuclear pore proteins (Nups) act as scaffolds that recruit the transcription factor Mef2C to the NPC, promoting transcription of NPC-associated genes during muscle development.

View Article and Find Full Text PDF

The CRISPR/Cas9 system has been applied to efficient genome editing in many eukaryotic cells. However, the bases that can be edited by this system have been limited to those within the protospacer adjacent motif (PAM) and guide RNA-targeting sequences. In this study, we developed a genome-wide base editing technology, "CRISPR Nickase system" that utilizes a single Cas9 nickase.

View Article and Find Full Text PDF

Saccharomyces cerevisiae is used as a host strain in bioproduction, because of its rapid growth, ease of genetic manipulation, and high reducing capacity. However, the heat produced during the fermentation processes inhibits the biological activities and growth of the yeast cells. We performed whole-genome sequencing of 19 intermediate strains previously obtained during adaptation experiments under heat stress; 49 mutations were found in the adaptation steps.

View Article and Find Full Text PDF

Influenza viruses have periodically caused pandemic due to frequent mutation of viral proteins. Influenza viruses have two major membrane glycoproteins: hemagglutinin (HA) and neuraminidase (NA). Hemagglutinin plays a crucial role in viral entry, while NA is involved in the process of a viral escape.

View Article and Find Full Text PDF

Background And Objective: Progression of chronic kidney disease (CKD) leads to the onset of cardiovascular dis- eases and an increase in the number of patients requiring dialysis initiation. In prder to promote the early detection and treatment of CKD, we assessed the effects of blood pressure control on renal impairment based on common test items and verified the usefulness of the target blood pressure for patients with CKD described in the Japanese Society of Hypertension Guidelines for the Management of Hypertension in 2014 (JSH 2014).

Subjects And Methods: Among patients who had been regularly visiting the outpatient clinic of Kasukabe Kisen Hospital for 24 months or more, 67 with a serum creatinine level of 1.

View Article and Find Full Text PDF