Serum Levels of Joining Chain-Containing IgA1 Are Not Elevated in Patients with IgA Nephropathy

Table 4

Immunofluorescent and immunohistochemistry staining of immunoglobulins and J chain on kidney slides of patients with IgA nephropathy.

Patient number	Intensity/percentage of staining
	IgA	IgM	IgG	C3	J chain (%)
1	+++	—	±	+	50.0 (6/12)
2	+++	—	—	++	100.0 (19/19)
3	+++~++++	+	±~+	++~+++	55.0 (11/20)
4	++	±	—	+	76.0 (19/25)
5	+++~++++	—	—	++	91.7 (11/12)
6	+++	—	—	±	77.8 (14/18)
7	++~+++	±	—	+	81.8 (18/22)
8	+++	+~++	—	+	100.0 (13/13)
9	+++~++++	—	—	++	66.7 (6/9)
10	++	—	—	±~+	76.5 (13/17)
11	++	—	—	—	83.3 (10/12)
12	+++	±	±	—	60.0 (9/15)