Budget Amount *help |
¥3,340,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2008: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2007: ¥1,000,000 (Direct Cost: ¥1,000,000)
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Research Abstract |
To investigate the role of the PD-1/PD-L system in the pathology of renal involvement of systemic antoimmune diseases (SAD), we examined the expression of PD-1 and its ligand PD-L1 in renal biopsy specimens from patients with SAD. Immunohistochemical analysis showed that PD-1/PD-L1 was expressed on inflammatory cells infiltrated in the periglomerular regions and on urinary tube epithelial cells. These findings were no relation to the type of SAD and the subclasses of lupus nephritis. Unlikely on our previous report about NZB/W F1 mice, a model of lupus-like nephritis, PD-L1 was not expressed in the glomeruli. These results suggested that the PD-1/PD-L1 pathway may be related to the immunological reaction in the progression to nephritis.
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