Yoshikuni Nagayama

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Growth arrest-specific protein-1 (GAS1) is a GPI-anchored protein which is highly expressed in embryonic mouse fibroblasts and inhibits their proliferation. Glomerular mesangial cells release soluble GAS1 protein into the supernatant in vitro. Growth arrest led to GAS1 overexpression and increased release. Secretion involved disintegrin and(More)
BACKGROUND In 2011, the Japanese Society of Nephrology (JSN) published new clinical guidelines for IgA nephropathy (IgAN) with a new risk stratification based on clinical and histological severity. For classification, patients are divided into four groups (low, medium, high, and very high risk). However, differences in responsiveness to each treatment among(More)
Renal inflammation, in particular glomerular, is often characterized by increased IL-6 levels. The in vivo relevance of IL-6 signaling in glomerular podocytes, which play central roles in most glomerular diseases, is unknown. Here, we show that in normal mice, podocytes express gp130, the common signal-transducing receptor subunit of the IL-6 family of(More)
The role of IL-6 signaling in renal diseases remains controversial, with data describing both anti-inflammatory and proinflammatory effects. IL-6 can act via classic signaling, engaging its two membrane receptors gp130 and IL-6 receptor (IL-6R). Alternatively, IL-6 trans-signaling requires soluble IL-6R (sIL-6R) to act on IL-6R-negative cells that express(More)
In Lemierre’s syndrome, patients first exhibit pharyngitis and peritonsillar abscessation, followed by the development of anaerobic bacterial (usually Fusobacterium necrophorum) septicemia and metastatic infections throughout the body. However, these infections rarely affect the liver. We describe a case of Lemierre’s syndrome, in which the first disease(More)
Occasionally, patients with acute Epstein-Barr virus (EBV) infection develop hemophagocytic syndrome (HPS). Acute kidney injury (AKI) is considered a strong prognostic factor, but very few data are available about the biopsy-proven renal involvement of EBV-HPS. Here we describe a previously healthy 17-year-old girl with EBV-HPS. Combination therapy failed(More)
A 29-year-old man was admitted to our hospital because of high fever and dyspnea. About two months before this admission the patient was diagnosed as Henoch-Schönlein purpura nephritis who was treated with 40 mg/day of prednisolone(PSL). When the dose of PSL was decreased to 32.5 mag/day, his temperature was 40 degrees C, the pulse was 120 beats per minute(More)
Relapsing polychondritis (RP) is a rare systemic autoimmune disorder characterized by the episodic and progressive deterioration of cartilage inflammation. Approximately 30% patients with RP have concurrent disease. However, there have been no previous reports of RP complicated by immunoglobulin G4-related disease (IgG4-RD). Here we report the case of a(More)
A-23-year-old woman with systemic lupus erythematosus (SLE) and on hemodialysis for 5 years was admitted to the hospital because of severe general fatigue. On admission, laboratory findings showed that fasting plasma glucose levels ranged from 25 â 45 mg/dl, a test for antinuclear antibody (ANA) was positive (1 : 320, with a discrete-speckled pattern),(More)