Table 3.

Number of positive vessels for β‐amyloid (Aβ), matrix metalloproteinase (MMP)‐2 or MMP‐9 immunostaining from the total number of vessels of each group, according to cerebral amyloid angiopathy (CAA) severity following the pathological criteria described in the Methods section. Representative Aβ immunohistochemistry of CAA different grades.

	Aβ	MMP‐9	MMP‐2
	Positivity within the vessel wall	Cellular positivity within or around the vessel	Cellular positivity (a) with or (b) around the vessel
CAA (n = 6)
Grade 0	0/30 (0%)	0/30 (0%)	(a) 3/30 (10%)
			(b) 0/30 (0%)
Grade 1	60/60 (100%)	0/60 (0%)	(a) 0/60 (0%)
			(b) 16/60 (26.7%)
Grade 2	60/60 (100%)	2/60 (3.3%)	(a) 12/60 (20%)
			(b) 37/60 (61.7%)
Grade 3	10/11 (90.1%)	0/11 (0%)	(a) 7/11 (63.6%)
			(b) 11/11 (100%)
Grade 4	12/24 (50%)	1/24 (4.2%)	(a) 12/24 (50%)
			(b) 24/24 (100%)
Controls (n = 6)	0/30 (0%)	0/30 (0%)	(a) 6/30 (20%)
			(b) 0/30 (0%)

Elements shown in bold indicate that the positive staining is ≥50%.