Figure 1
From: A case of rapidly progressive IgA nephropathy in a patient with exacerbation of Crohn’s disease
Histological findings of the renal tissues and intestinal mucosa. Crescent formations of the glomeruli were observed with periodic acid-Schiff (PAS) staining in light microscopy (A: 100× magnification). Immunofluorescence staining was positive for IgA in the mesangial regions (B). Immunostaining for interleukin (IL)-17 was positive in renal tissue in April 2011 (C) and exacerbated colonic ulcer tissue (D) in December 2010. IL-17 staining was negative in the primary IgA nephropathy (control) patient (E: 100× magnification).