Publications by authors named "Yayoi Shiotsu"

Anorexia nervosa (AN) is an eating disorder characterized by restriction of energy intake leading to a significantly low body weight, and intense fear of gaining weight. Severe electrolyte changes such as hypokalemia and hypophosphatemia; and alterations in water metabolism such as hyponatremia and edema, can occur in patients with AN. Hypokalemia and chronic volume depletion may lead to acute kidney injury (AKI) and chronic kidney disease (CKD).

View Article and Find Full Text PDF

A 75-year-old man with fever was diagnosed with alveolar hemorrhage. Antineutrophil cytoplasmic antibodies for myeloperoxidase and proteinase 3 were absent. He received corticosteroid therapy, which immediately improved his symptoms and chest radiological findings.

View Article and Find Full Text PDF

Glomerulopathy with fibronectin deposits (GFND) is a rare hereditary kidney disease with autosomal dominant inheritance. A 21-year-old woman who had been diagnosed with GFND 10 years ago was admitted for investigation of a rapid decline in her renal function, hemolytic anemia, and cardiac dysfunction. A renal biopsy showed GFND accompanied by extraglomerular vascular lesions.

View Article and Find Full Text PDF

Purpose: To report the endovascular treatment for acute progressive and very-late-onset multiple segmental small-artery stenoses in transplanted kidney parenchyma presenting with rapidly deteriorating renal function and refractory hypertension in a 65-year-old man.

Case Report: Nineteen years ago, the patient received a living renal transplant via end-to-end anastomosis of the right internal iliac artery for kidney failure caused by chronic glomerulonephritis. His transplant renal function (creatinine: 0.

View Article and Find Full Text PDF
Article Synopsis
  • - Dietary salt restriction is crucial for managing fluid retention in chronic kidney disease (CKD) patients, as shown in a 7-day study where patients consumed a low-salt diet of 5g/day.
  • - Among 311 patients studied, significant weight loss was noted on Day 4 (0.7 kg) and Day 7 (1.0 kg), with increased weight loss observed in patients with higher urinary salt excretion.
  • - The study found that higher body mass index (BMI) and urinary salt excretion correlated with greater initial weight loss, indicating that dietary changes can impact fluid retention in CKD patients, but further long-term studies are necessary.
View Article and Find Full Text PDF
Article Synopsis
  • Sodium glucose co-transporter 2 inhibitors (SGLT2i), particularly ipragliflozin, are effective in slowing down the progression of diabetic kidney disease, as seen in various studies.
  • Administering ipragliflozin to both type 2 and type 1 diabetic mice showed that it lowered blood glucose and urinary albumin levels, while also inhibiting kidney enlargement and reducing oxidative stress.
  • The study highlighted that both high- and low doses of ipragliflozin protect kidney function by improving podocyte integrity and reducing renal tissue hypoxia, with dose-dependent effects particularly noted in the early stages of diabetic nephropathy.
View Article and Find Full Text PDF
Article Synopsis
  • HDR syndrome is a rare genetic disorder linked to mutations in the GATA3 gene, characterized by hypoparathyroidism, sensorineural deafness, and renal dysplasia.
  • A new case of HDR syndrome was reported in an adult with a specific mutation (p.C288W) in GATA3, revealing unusual kidney histology similar to membranoproliferative glomerulonephritis.
  • Further studies on kidney histology in HDR syndrome patients are essential to understand how GATA3 affects kidney development and function in adults.
View Article and Find Full Text PDF

Hyponatremia is a common finding after subarachnoid hemorrhaging (SAH) and can be caused by either cerebral salt-wasting syndrome (CSWS) or syndrome of inappropriate antidiuretic hormone (SIADH). Distinguishing between these two entities can be difficult because they have similar manifestations, including hyponatremia, serum hypo-osmolality, and high urine osmolality. We herein report the case of a 60-year-old man who suffered from SAH complicated by hyponatremia.

View Article and Find Full Text PDF

Background: The pathophysiological mechanisms of cisplatin nephrotoxicity include the reduction of renal blood flow, as well as tubular epithelial cell toxicity. The objective of this study was to investigate the influence of lower blood pressure and decreased food intake on the incidence of cisplatin nephrotoxicity.

Methods: We conducted a retrospective cohort study at a university hospital between 2011 and 2012.

View Article and Find Full Text PDF

A 30-year-old woman with myelodysplastic syndrome underwent allogeneic hematopoietic stem cell transplantation (HSCT) derived from her HLA-matched sister six years previously. She received preconditioning total body irradiation with renal shielding and was subsequently administered cyclosporin A (CyA) as prophylaxis against graft-versus-host disease (GVHD). Four months after HSCT, asymptomatic proteinuria and glomerular hematuria developed during CyA tapering without obvious extrarenal involvements of GVHD, and persisted for six years.

View Article and Find Full Text PDF
Article Synopsis
  • * After finding her kidney problems persisted despite anemia improvement, they opted for mitral valve replacement, which helped the anemia but did not restore full kidney function, leading to chronic kidney disease.
  • * Research suggests that while early postoperative hemolysis might resolve on its own, late-phase hemolysis can persist and lead to serious kidney damage, emphasizing the need for reoperation in such cases for better treatment outcomes.
View Article and Find Full Text PDF

Aims: Anemia, which might contribute to pathogenesis of kidney dysfunction, is a common finding in patients with type 2 diabetes. The aim of this study was to investigate if hemoglobin concentration is associated with the degree of change in urinary albumin-creatinine ratio or the development of albuminuria in patients with type 2 diabetes.

Methods: We measured hemoglobin concentration in 470 (296 men and 174 women) consecutive type 2 diabetic patients without albuminuria.

View Article and Find Full Text PDF

Background: S100A12 protein is an endogenous receptor ligand for advanced glycation end products. In this study, the plasma S100A12 level was assessed as an independent predictor of mortality, and its utility in clinical settings was examined.

Methods: In a previous cross-sectional study, plasma S100A12 levels were measured in 550 maintenance hemodialysis patients to determine the association between S100A12 and the prevalence of cardiovascular diseases (CVD).

View Article and Find Full Text PDF

We report the case of a Japanese family suffering from familial juvenile hyperuricemic nephropathy (FJHN) due to a rare missense mutation of the uromodulin (UMOD) gene. An 18-year-old male presented with gout, hyperuricemia, and stage 3 chronic kidney disease. Mostly, FJHN is caused by a mutation altering the cystine residue of UMOD/Tamm-Horsfall protein.

View Article and Find Full Text PDF

A 27-year-old woman was referred to our hospital because of pancytopenia and nephritic syndrome in November, 2008. The findings of physical and laboratory examinations showed systemic lupus erythematosus (SLE). Diffuse proliferative lupus nephritis(group IV-G(A))was confirmed by renal biopsy.

View Article and Find Full Text PDF

Unilateral ureteral obstruction is a well-established experimental model of progressive renal fibrosis. We tested whether mechanical stretch and subsequent renal tubular distension might lead to renal fibrosis by first studying renal tubular epithelial cells in culture. We found that mechanical stretch induced reactive oxygen species that in turn activated the cytoplasmic proline-rich tyrosine kinase-2 (Pyk2).

View Article and Find Full Text PDF

Background And Objectives: S100A12 is an endogenous receptor ligand for advanced glycation end products. Cardiovascular disease remains a major cause of morbidity and mortality in patients with chronic kidney disease. In this study, we report cross-sectional data on 550 hemodialysis patients and assess the relationship between plasma S100A12 level and cardiovascular disease.

View Article and Find Full Text PDF
Article Synopsis
  • S100A12 is a protein linked to inflammation that is found at higher levels in patients with end-stage renal disease (ESRD) receiving hemodialysis, particularly those with peripheral arterial disease (PAD).
  • A study of 152 hemodialysis patients revealed that those with PAD had significantly higher plasma levels of S100A12 compared to those without PAD.
  • The study highlights that elevated S100A12 is an independent predictor of PAD prevalence in ESRD patients, suggesting it may be a useful biomarker for assessing cardiovascular risk in this population.
View Article and Find Full Text PDF

Background/aims: Peritoneal fibrosis leads to discontinuation of peritoneal dialysis. Although aldosterone promotes tissue fibrosis in many organs, its contribution to peritoneal fibrosis and the underlying mechanism are poorly understood. The present study investigated the direct effect of aldosterone on cultured rat peritoneal fibroblasts (RPFs).

View Article and Find Full Text PDF